KS D 3030 [PDF]

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KS D 3030:2013

Foreword This document is a Korean industrial standard that has been established through a deliberation by the Industrial Standards Council based on the Industrial Standardization Act. This standard is a copyrighted material that is protected by the copyright laws. Careful attention should be paid to the possibility that parts of this standard could be in conflict with patents of technical nature, patent applications after application disclosure, utility model rights or utility model applications after application disclosure. Administrator of the Korean Agency for Technology and Standards and the Industrial Standards Council do not take any responsibility for verifications in relation to the patents of technical nature, patent applications after application disclosure, utility model rights or utility model applications after application disclosure. For details about patent rights, please refer to ‘Annex F Patent Rights’ of KS A 0001:2008, Rules for the drafting and presentation of Korean Industrial Standards and the patent policies of international standardization organizations (ISO/IEC directive appendix | Common patent policy for ITU-T/ITUR/ISO/IEC).

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KS D 3030:2013

Introduction This standard covers hot-dip zinc-aluminum-magnesium alloy-coated steel sheets and coils. There is a concern that following this standard may correspond to a use of the following patent: ― ― ― ― ―

Name of invention (design): corrosion resistant zinc coating bath and products Registered date of the setting: June 21, 2005 Patent (registration) number: 10-0498092 Application number: 10-2000-0064813 Patentee: POSCO

This statement does not affect the effect, scope, etc. of the above-mentioned patent right. The owner of the above patent right guarantees his/her intention to grant the Industrial Standards Council the implementation of the patent without limitations in a nondiscriminatory manner under reasonable conditions. Furthermore, attention is called to the fact that following this standard does not imply the free opening of the patent, etc. There is a possibility that parts of this standard could be in conflict with patents of technical nature excluding the above patent, patent applications after application disclosure, utility model rights or utility model applications after application disclosure. Administrator of the Korean Agency for Technology and Standards and the Industrial Standards Council do not take any responsibility for verifications in relation to the patents of technical nature, patent applications after application disclosure, utility model rights or utility model applications after application disclosure.

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Translated by Korean Standards Association

○C KSA 2014 KOREAN INDUSTRIAL STANDARD

KS D 3030:2013 (English Version, Manuscript)

㉿ Hot-dip zinc-aluminium-magnesium alloy-coated steel sheets and coils 1 Scope This standard specifies the steel sheets and coils that have been hot-dip plated in a plating bath of which the sum of magnesium and aluminum comprises 1.5 %∼8 % and zinc comprises the rest (hereinafter referred to as sheets and coils). In this case, sheets include the corrugated steel sheets of the shapes and dimensions specified in KS D 3053. NOTE

An international standard similar to this standard is stated below. NOTE ASTM A1046/A1046M:2010, Standard Specification for Steel Sheet, Zinc-AluminiumMagnesium Alloy-Coated by the Hot-Dip Process

2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. KS B 0801, Test pieces for tensile test for metallic materials KS B 0802, Method of tensile test for metallic materials KS D 0001, General rules for inspection of steel KS D 0201, Testing methods for hot-dipped zinc coating KS D 1654, General rules for X-ray fluorescence spectrometric analysis of iron and steel KS D 1655, Method for X-ray fluorescence spectrometric analysis of iron and steel KS D 3053, Shapes and dimensions of corrugated steel sheets KS D 8334, Methods of corrosion resistance test for metallic coatings KS D ISO 404, Steel and steel products — General technical delivery requirements KS M 0017, General rules for X-ray fluorescence spectrometric analysis KS Q 5002, Statistical interpretation of data — Part 1: Statistical presentation of data

3 Types and symbols Sheets and coils shall be classified into 6 types using blackplate produced by hot rolling (hereinafter

KS D 3030:2013 referred to as “hot-rolled blackplate”) and 10 types using blackplate produced by cold rolling (hereinafter referred to as “cold-rolled blackplate”). The symbols shall conform to Table 1 and Table 2. Table 1 ― Type and designations (sheets and coils using hot-rolled blackplates) Dimensions in millimetres Designations

Applicable marked a thickness

Application

SGMHC

General

SGMH340 SGMH400 SGMH440

1.0 or greater and 5.0 or smaller

Structures

SGMH490 SGMH540 a

Marked thickness shall conform to clause 10. a).

Table 2 ― Types and designations (sheets and coils using cold-rolled blackplates) Dimensions in millimetres a

Designations

Applicable marked thickness

SGMCC

0.25 or greater and 2.3 or smaller

General

SGMCH

0.25 or greater and 1.0 or smaller

General hard materials

SGMCD1 SGMCD2 SGMCD3

0.40 or greater and 2.3 or smaller 0.60 or greater and 2.3 or smaller

Application

Processing type 1 Processing type 2 Processing type 3

SGMC340 SGMC400 SGMC440

0.25 or greater and 2.3 or smaller

Structures

SGMC490 SGMC570

0.25 or greater and 2.0 or smaller

NOTE 1 For the sheets and coils of SGMCD3 of which nonaging property is guaranteed as specified by client, N shall be added to the end of the designations and written as SGMCD3N. Nonaging property means a property that does not generate stretcher train during processing. NOTE 2 Other marked thicknesses than those in Table 2 can be discussed between client and manufacturer. NOTE 3 When used for roofs and building shells, R for roofs or A for building shells shall be added to the end of the designations in Table 2. In this case, the marked thickness and the designations for coating weight shall comply with Annex A. NOTE 4 For corrugated sheets in accordance with KS D 3053, W and the shape symbol of the corrugated sheet shall be added to the designations in Table 2. In this case, the marked thickness and the coating weight designation shall comply with Annex B. NOTE 5 For corrugated sheets, the types in Table 2 for general, general hard materials and structures shall be used. a

2

Marked thickness shall conform to clause 10. a).

KS D 3030:2013

4 Chemical composition The chemical composition of the base metal for the sheets and coils (ladle analysis value) shall conform to Table 3 when a hot-rolled blackplate is used or Table 4 when a cold-rolled blackplate is used. Table 3 ― Chemical composition (when using hot-rolled blackplates) Dimensions in percentages Designations

C

Mn

P

S

SGMHC

0.15 or less

0.80 or less

0.05 or less

0.05 or less

SGMHC340

0.25 or less

1.70 or less

0.20 or less

0.05 or less

SGMHC400

0.25 or less

1.70 or less

0.20 or less

0.05 or less

SGMHC440

0.25 or less

2.00 or less

0.20 or less

0.05 or less

SGMHC490

0.30 or less

2.00 or less

0.20 or less

0.05 or less

SGMHC540

0.30 or less

2.50 or less

0.20 or less

0.05 or less

NOTE

The reporting of the ladle analysis values for C, Mn, P, and S shall be agreed on between client and manufacturer. Table 4 ― Chemical composition (when using cold-rolled blackplates) Dimensions in percentages

Designations

C

Mn

P

S

SGMCC

0.15 or less

0.80 or less

0.05 or less

0.05 or less

SGMCH

0.18 or less

1.20 or less

0.08 or less

0.05 or less

SGMCD1

0.12 or less

0.60 or less

0.04 or less

0.04 or less

SGMCD2

0.10 or less

0.45 or less

0.03 or less

0.03 or less

SGMCD3

0.08 or less

0.45 or less

0.03 or less

0.03 or less

SGMC340

0.25 or less

1.70 or less

0.20 or less

0.05 or less

SGMC400

0.25 or less

1.70 or less

0.20 or less

0.05 or less

SGMC440

0.25 or less

2.00 or less

0.20 or less

0.05 or less

SGMC490

0.30 or less

2.00 or less

0.20 or less

0.05 or less

SGMC570

0.30 or less

2.00 or less

0.20 or less

0.05 or less

NOTE

The reporting of the ladle analysis values for C, Mn, P, and S shall be agreed on between client and manufacturer.

5 Skin pass processing The skin pass processing for smooth surface shall be specified by client. The symbol in this case shall be S.

6 Coating weight The coating weight shall be tested in accordance with clause 16.2. The minimum coating weight of both sides (total of both sides) of the same thickness plating on both sides and the coating weight designation shall be as follows:

3

KS D 3030:2013 a) The coating weight of the same thickness on both sides of sheets and coils shall be indicated by the mass of both sides, and the minimum coating weight and coating weight designations shall conform to Table 5. Table 5 ― Minimum coating weight of both sides of same-thickness plating (total of both sides) 2 Dimensions in g/m (both sides) 3-point average minimum coating weight

1-point minimum coating weight

60

51

M08

80

68

M10

100

85

M12

120

102

M14

140

119

M18

180

153

M20

200

170

M22

220

187

M25

250

213

Coating weight designations (M06)

a

M27

275

234

(M35)

a

350

298

(M45)

a

450

383

NOTE 1 The 3-point average minimum coating weight (total of both sides) shall be applied to the average of the measurements of three test pieces sampled from the test material. NOTE 2 The 1-point average minimum coating weight (total of both sides) shall be applied to the minimum value of the measurements of three test pieces sampled from the test material. NOTE 3 The maximum coating weight (total of both sides) may be agreed on between client and manufacturer. NOTE 4 For the minimum coating weight at one point on one side of the plating of sheets and coils with the same thickness plating on both sides, 40 % of the 1-point minimum coating weight on both sides (total of both sides) is recommended. a

The values in (

) may be agreed between client and manufacturer.

7 Chemical conversion treatment The types and symbols of the chemical conversion treatment of sheets and coils shall conform to Table 6. Table 6 ― Types and symbols of the chemical conversion treatment Types of chemical conversion treatment Chromic acid treatment

C

No treatment

M

NOTE

4

Symbols

The types of chemical conversion treatment other than those in Table 6 may be agreed between client and manufacturer.

KS D 3030:2013

8 Oiling The types and symbols of sheets and coils shall conform to Table 7. However, no oiling shall be used unless specified otherwise. Table 7 ― Types and symbols of oiling Types of oiling

Symbols

Oiling

O

No oiling

X

9 Mechanical properties 9.1

Applied mechanical properties

The mechanical properties applied to sheets and coils shall conform to Table 8. Table 8 ― Applied mechanical properties

Bendability

Yield point or yield strength, tensile strength and elongation

SGMHC

O

－

SGMH340

O

O

SGMH400

O

O

SGMH440

O

O

SGMH490

O

O

SGMH540

O

O

SGMCC

O

a

－

SGMCH

－

－

SGMCD1

O

O

SGMCD2

O

O

SGMCD3

O

O

SGMC340

O

O

SGMC400

O

O

SGMC440

O

O

SGMC490

O

O

SGMC570

－

O

Designations

NOTE a

9.2

The mechanical properties for roofs and building shells shall conform to the designations in Table 8.

Not applied to corrugated sheets.

Bendability

5

KS D 3030:2013

For the bendability of sheets and coils specified in clause 9.1, when tested in accordance with clause 16.4 and Table 9, no flaking marks, and no cracks (recognizable by naked eye) and fractures on the external surface (at least 7 mm inside from either edge on the width of the test piece). Table 9 ― Bendability Indication of the inner gap of bending (number of sheets of the marked thickness) Designations

Marked thickness smaller than 1.6 mm

Marked thickness 1.6 mm or greater and smaller than 2.3 mm

Coating weight designations

Coating weight designations

Hot-rolled blackplate

Cold-rolled blackplate

∼M27

M35

M45

∼M27

M35

M45

SGMHC

SGMCC

1

1

2

1

2

2

－

SGMCH

－

－

－

－

－

－

－

SGMCD1

1

－

－

1

－

－

－

SGMCD2 SGMCD3

0

－

－

0

－

－

SGMH340

SGMC340

1

1

2

1

1

2

SGMH400

SGMC400

2

2

2

2

2

2

SGMH440 SGMH490 SGMH540

SGMC440 SGMC490

3

3

3

3

3

3

－

SGMC570

－

－

－

－

－

－

NOTE 1 The bending angle shall be 180° regardless of the designations. NOTE 2 This shall apply to 1.6 mm or greater marked thickness when hot-rolled blackplates are used. NOTE 3 The values for the designations M35 and M45 indicating the coating weight shall be applied when it is agreed on between client and manufacturer. 9.3

Yield point or yield strength, tensile strength and elongation

The yield point or yield strength, tensile strength and elongation of sheets and coils shall be tested in accordance with clause 16.5 and conform to Table 10 and Table 11. Furthermore, the yield point shall be the upper yield point.

6

KS D 3030:2013 Table 10 ― Yield point or yield strength, tensile strength and elongation (when using hot-rolled blackplates) Yield point or yield strength 2 N/mm

Tensile strength

(205 or greater)

(270 or greater)

－

SGMH340

245 or greater

340 or greater

20 or higher

SGMH400

295 or greater

400 or greater

18 or higher

SGMH440

335 or greater

440 or greater

18 or higher

SGMH490

365 or greater

490 or greater

16 or higher

400 or greater

540 or greater

16 or higher

Designations

SGMHC

SGMH540

Elongation Test piece

N/mm

2

% No.5, rolling direction No.5, rolling direction or perpendicular to the rolling direction

2

NOTE

1 N/mm ＝1 MPa

NOTE

The numbers within parentheses (

) are for reference.

Table 11 ― Yield point or yield strength, tensile strength and elongation (when using cold-rolled blackplates) Yield point or yield strength 2 N/mm

Tensile strength

SGMCC

(250 or greater)

SGMCH

Designations

Elongation % Marked thickness mm

Test piece

≥0.25 ＜0.40

≥0.40 ＜0.60

≥0.60 ＜1.0

≥1.0 ＜1.6

≥1.6 ≤2.3

(270 or greater)

－

－

－

－

－

－

－

－

－

－

－

－

SGMCD1

－

270 or greater

－

34 or higher

36 or higher

37 or higher

38 or higher

SGMCD2

－

270 or greater

－

36 or higher

38 or higher

39 or higher

40 or higher

SGMCD3

－

270 or greater

－

38 or higher

40 or higher

41 or higher

42 or higher

SGMC340

245 or greater

340 or greater

20 or higher

20 or higher

20 or higher

20 or higher

20 or higher

SGMC400

295 or greater

400 or greater

18 or higher

18 or higher

18 or higher

18 or higher

18 or higher

SGMC440

335 or greater

440 or greater

18 or higher

18 or higher

18 or higher

18 or higher

18 or higher

SGMC490

365 or greater

490 or greater

16 or higher

16 or higher

16 or higher

16 or higher

16 or higher

SGMC570

560 or greater

570 or greater

－

－

－

－

－

N/mm

2

No.5, rolling direction

No.5, rolling direction or perpendicular to the rolling direction

7

KS D 3030:2013 Table 11 ― Yield point or yield strength, tensile strength and elongation (when using cold-rolled blackplates) (Continued)

Designations

Yield point or yield strength N/mm2

Elongation %

Tensile strength

N/mm2

Marked thickness mm ≥0.25 ＜0.40

≥0.40 ＜0.60

≥0.60 ＜1.0

Test piece

≥1.0 ＜1.6

≥1.6 ≤2.3

NOTE 1 If nonaging property is specified for the sheets and coils of SGMCD3, nonaging property shall be guaranteed for six months after release from the manufacturing process. Nonaging property refers to no generation of stretcher strain during processing. NOTE 2 Tensile test is usually not required for an marked thickness smaller than 0.25 mm. NOTE 3 The numbers in parentheses ( ) in Table 11 are for reference. 2 NOTE 4 N/mm ＝1 MPa NOTE

SGMCH is not annealed and usually has the minimum Lockwell hardness of 85 HRB or the minimum Vickers hardness of 170 HV (under random test load).

10 Marking of dimensions The markings of dimensions for sheets and coils shall conform to the following: a) For the thickness of sheets and coils, the thickness of blackplate before plating shall be the marked thickness and the thickness after plating on the blackplate shall be the product thickness. b) For the dimensions of sheets, the marked thickness, width, and length shall be presented in mm. c) For the dimensions of coils, the marked thickness and width shall be presented in mm.

11 Standard dimensions The standard dimensions of sheets and coils shall conform to the following. However, the standard marked thickness of corrugated sheets and the standard length of the corrugated sheets before processing of the troughs shall comply with Annex B. Furthermore, the standard length and standard finishing width of corrugated sheets shall comply with KS D 3053. a) The standard marked thickness: The standard marked thickness of sheets and coils shall conform to Table 12. Table 12 ― Standard marked thickness Dimensions in millimetres 0.27 1.4 NOTE

0.30 1.6

0.35 1.8

0.40 2.0

0.50 2.3

0.60 2.8

0.70 3.2

0.80 3.6

0.90 4.0

1.0 4.5

1.2

Depending on the agreement between client and manufacturer, 0.65 mm and 0.75 mm may used for the standard marked thickness.

b) The standard width and the standard length of sheets: The standard width and the standard length of sheets shall conform to Table 13.

8

KS D 3030:2013 Table 13 ― Standard width and length Dimensions in millimetres Standard width

NOTE

Standard length of sheets

762

1 829

2 134

2 438

2 743

3 048

3 353

3 658

914

1 829

2 134

2 438

2 743

3 048

3 353

3 658

1 000

2 000

1 219

2 438

3 048

3 658

For coils, 610 mm shall be a standard width as well as those in Table 13.

12 Tolerances of dimensions 12.1

Tolerances of product thickness

The tolerances of product thickness for sheets and coils shall conform to the following: a) The tolerances of product thickness shall be the marked thickness presented in numbers with three decimal places plus the equivalent plating thickness in Table 17. b) The tolerances of product thickness shall conform to Table 14, Table 15, or Table 16. c) The measured parts of product thickness shall be random points at 25 mm inside from the side edges. Table 14 ― Tolerances of product thickness (for general applications using hot-rolled blackplates) Dimensions in millimetres Width Marked thickness

Smaller than 1 200

1 200 or greater and smaller than 1 500

1 500 or greater and smaller than 1 800

1.20 or greater and smaller than 1.60

±0.16

±0.17

±0.18

1.60 or greater and smaller than 2.00

±0.17

±0.18

±0.19

2.00 or greater and smaller than 2.50

±0.18

±0.20

±0.22

2.50 or greater and smaller than 3.15

±0.20

±0.22

±0.25

3.15 or greater and smaller than 4.00

±0.22

±0.24

±0.27

4.00 or greater and smaller than 5.00

±0.25

±0.27

－

9

KS D 3030:2013 Table 15 ― Tolerances of product thickness (for structure applications using hot-rolled blackplates) Dimensions in millimetres Width Marked thickness

Smaller than 1 600

1 600 or greater and smaller than 1 800

1.20 or greater and smaller than 1.60

±0.19

－

1.60 or greater and smaller than 2.00

±0.20

±0.24

2.00 or greater and smaller than 2.50

±0.21

±0.26

2.50 or greater and smaller than 3.15

±0.23

±0.30

3.15 or greater and smaller than 4.00

±0.25

±0.35

4.00 or greater and smaller than 5.00

±0.46

－

Table 16 ― Tolerances of product thickness (when using cold-rolled blackplates) Dimensions in millimetres Width Marked thickness

Smaller than 630

630 or greater and smaller than 1 000

1 000 or greater and smaller than 1 250

1 250 or greater and smaller than 1 600

1 600 or greater

(Smaller than 0.25)

±0.04

±0.04

±0.04

－

－

0.25 or greater and smaller than 0.40

±0.05

±0.05

±0.05

±0.06

－

0.40 or greater and smaller than 0.60

±0.06

±0.06

±0.06

±0.07

±0.08

0.60 or greater and smaller than 0.80

±0.07

±0.07

±0.07

±0.07

±0.08

0.80 or greater and smaller than 1.00

±0.07

±0.07

±0.08

±0.09

±0.10

1.00 or greater and smaller than 1.25

±0.08

±0.08

±0.09

±0.10

±0.12

1.25 or greater and smaller than 1.60

±0.09

±0.10

±0.11

±0.12

±0.14

1.60 or greater and smaller than 2.00

±0.11

±0.12

±0.13

±0.14

±0.16

2.00 or greater and smaller than 2.30

±0.13

±0.14

±0.15

±0.16

±0.18

(2.30 or greater)

±0.15

±0.16

±0.17

±0.18

±0.21

NOTE

10

The numbers within parentheses (

) are for reference.

KS D 3030:2013 Table 17 ― Equivalent plating thickness Coating weight designations

Note

M45

Al in plating layer wt %

1

0.014 0.019 0.023 0.029 0.032 0.037 0.044 0.047 0.054 0.059 0.070 0.088

4 % or less

2

More than 0.015 0.020 0.024 0.030 0.033 0.039 0.046 0.049 0.056 0.062 0.074 0.092 4 %, 8 % or less

Division

12.2

M06

M08

M10

M12

M14

M18

M20

M22

M25

M27

M35

Tolerances of width

Te tolerances of the widths of sheets and coils shall conform to Table 18. The measured parts shall be the normal pars of coils and the random parts of sheets. However, the tolerances of the finishing width of corrugated sheets shall comply with KS D 3053. Table 18 ― Tolerances of width Dimensions in millimetres Width

When using hot-rolled blackplates Mill edge (A)

1 500 or less

＋25 0

Greater than 1 500

12.3

When using cold-rolled blackplates

Cut edge (B)

＋7 0

＋10 0

＋10 0

Tolerances of length

The tolerances of length shall conform to Table 19. The measured parts shall be random parts of the sheet. Table 19 ― Tolerances of length Dimensions in millimetres When using hot-rolled blackplates ＋15 0

When using cold-rolled blackplates ＋15 0

13 Shapes 13.1

Horizontal bending

The maximum values of horizontal bending of sheets and coils shall conform to Table 20 or Table 21.

11

KS D 3030:2013 Table 20 ― Maximum horizontal bending (when using hot-rolled blackplates) Dimensions in millimetres Sheets Width Smaller than 2 500

Length 2 500 or greater and smaller than 4 000

Coils 4 000 or greater

Smaller than 630

5

8

12

630 or greater and smaller than 1 000

4

6

10

1 000 or greater

3

5

8

5 to random length 2 000

Table 21 ― Maximum horizontal bending (when using cold-rolled blackplates) Dimensions in millimetres Sheets Width

Length Smaller than 2 000

13.2

Coils 2 000 or greater

Smaller than 630

4

4 to random length 2 000

630 or greater

2

2 to random length 2 000

Out of squareness

The out of squareness of sheets shall be expressed as W  100 (%) in Figure 1 and shall not exceed 1 %. A

W (Width)

Figure 1 ― Out of squareness of sheets 13.3

Flatness

The flatness of sheets shall conform to Table 22 or Table 23. The flatness shall be measured on a surface plat. The value shall be the maximum deformation minus the thickness of the plate which shall be applied to the top surface of the plate.

12

KS D 3030:2013 Table 22 ― Flatness (when using hot-rolled blackplates) Dimensions in millimetres Width Thickness

1 250 or smaller

1 250 or smaller

1 250 or smaller

1 250 or smaller

1 250 or smaller

1.20 or greater and smaller than 1.60

18 or smaller

20 or smaller

－

－

－

1.60 or greater and smaller than 3.15

16 or smaller

18 or smaller

20 or smaller

－

－

3.15 or greater and smaller than 4.00

16 or smaller

－

－

4.00 or greater and smaller than 6.00

14 or smaller

24 or smaller

25 or smaller

NOTE

Unless specified otherwise, the maximum flatness of sheets with the specified lower limit of 2 tensile strength of 570 N/mm or sheets with the specified lower limit of the yield point of 430 2 N/mm , and sheets with corresponding chemical composition or hardness shall be 1.5 times the values in Table 22. Table 23 ― Flatness (when using cold-rolled blackplates) Dimensions in millimetres Width

Type a

b

Bow

Outside bow

Middle bow

Smaller than 1 000

12 or smaller

8 or smaller

6 or smaller

1 000 or greater and smaller than 1 250

15 or smaller

9 or smaller

8 or smaller

1 250 or greater and smaller than 1 600

15 or smaller

11 or smaller

8 or smaller

1 600 or greater

20 or smaller

13 or smaller

9 or smaller

a b

Troughs appear at the edges (tip of the width direction) of sheets and coils. Troughs appear at the center of sheets and coils.

14 Weight and tolerances 14.1

Weight of sheets

The weights of sheets shall be expressed in kg according to the calculated weights. 14.2

Weight of coils

The weights of coils shall be expressed in kg according to the actual or calculated weights. 14.3

Calculation of weight

The weight calculation method of sheets and coils shall conform to Table 24 depending on the marked dimensions and the coating weight.

13

KS D 3030:2013 Table 24 ― Calculation method for weights Calculation sequence

Calculation method

Basic weight of blackplate 2 kg/mmㆍm

Number of digits of result 2

－

7.85 (thickness 1 mmㆍarea 1 mm ) 2

Unit weight of blackplate

kg/m

2

Basic weight of blackplate(kg/mmㆍm ) ×Marked thickness (mm)

Finish with 4 significant digits

2

Unit weight of blackplate (kg/m )× Coating weight constant (conform to Table 25)

Finish with 4 significant digits

kg/m

2

Area of sheet

m

2

Weight of 1 sheet

kg

Unit weight after plating (kg/m )× 2 Area (m )

Finish with 3 significant digits

Weight 1 bundle

kg

Weight of 1 sheet (kg)×Number of sheets in one bundle of the same dimensions

Finish with value of kg

Total weight

kg

Total of all bundle weights (kg)

Integer value of kg

Unit weight after plating

Width (mm)×Length (mm)×10

Finish with 4 significant digits

－6

2

Sheet

2

Unit weight of coil

kg/m

an

integer

Unit weight after plating (kg/mm )× －3 Width (mm)×10

Finish with 3 significant digits

Coil

Weight of 1 coil

kg

Unit weight of coil (kg/m)×Length (m)

Finish with value of kg

an

Total weight

kg

Total of all coil weights (kg)

Integer value of kg

integer

NOTE 1 If the bundle weight is fixed, the number of sheets shall be determined by the specified weight divided by the weight of one sheet for the same shape, same dimensions, and same coating weight, and finished with an integer value. NOTE 2 The width used for the calculation of the area of corrugated sheet shall conform to the dimensions before the trough processing. NOTE 3 The finishing of values shall comply with KS Q 5002 Annex A.

Table 25 ― Coating weight constant used for the calculation of weight 2 Dimensions in kg/m Marking of coating weight Coating weight constant

14.4

M06

M08

M10

M12

M14

M18

M20

M22

M25

M27

M35

M45

0.090 0.120 0.150 0.183 0.203 0.244 0.285 0.305 0.350 0.381 0.458 0.565

Tolerances of the calculated weight of sheet

The tolerance of the calculated weight of sheet shall be expressed as a percentage obtained by dividing the difference between the calculated weight obtained in accordance with clause 14.3 and the actual weight by the calculated weight, which shall conform to Table 26.

14

KS D 3030:2013 Table 26 ― Tolerance of weight Calculated weight of one set kg

Tolerance %

Smaller than 600

±10

600 or greater and smaller than 2 000

±7.5

2 000 or greater

±5

Note Use one set of the same material, same shape, same dimensions, and same coating weight for this calculation.

15 Appearance The sheets and coils shall have no defects harmful for use. However, this is not applicable to a little abnormal parts of the welded parts, etc for coils.

16 Test 16.1 16.1.1

Chemical composition analysis test General requirements of the analysis test and sampling method for analysis test pieces

The chemical composition of the base metal of sheets and coils shall be obtained by ladle analysis. The general requirements of the analysis tests and the sampling method for specimens shall comply with clause 4. (Chemical composition) of KS D 0001. 16.1.2

Analysis method

The analysis test method shall comply with KS D 1654 and KS D 1655. 16.2 16.2.1

Coating weight test Sampling method for test materials

For the test materials, one sheet shall be collected for every 50 t and its fraction of the product with the same dimensions and coating weight. For corrugated sheets, the test materials shall be collected in plate condition before trough processing. 16.2.2

Sampling method for test piece

The sampling method for test piece shall comply with either the 3-point method in clause 4.2.1 b) (Sampled location and size of test piece) of KS D 0201 or the method in Annex C. 16.2.3

Test method

The coating weight shall be measured for both sides. The test method shall use the antimony chloride solution in KS D 0201, or hexamethylenetetramine, or the method in Annex C. The coating weight measuring test method with online X-ray fluorescence spectrometry may be used by agreement between client and manufacturer. 16.3

Corrosion resistance test of plating

15

KS D 3030:2013 When the corrosion resistance of the plating is tested, it shall comply with the method in clause 8. (cycle test method) of KS D 8334. Furthermore, this test shall be conducted by agreement between client and manufacturer, and the evaluation criteria (establishment standard values and characteristics values) may be agreed between client and manufacturer. 16.4 16.4.1

Bending test General requirements of test

The general requirements of the bending test shall comply with clause 5. (Mechanical properties) of KS D 0001. 16.4.2

Sampling method for test materials

For the test materials, one sheet shall be collected for every 50 t and its fraction of the product with the same dimensions and coating weight. 16.4.3

Test piece

The test piece shall have a width between 75 mm and 125 mm and a length that is equal to twofold of the width. Unless specified otherwise, one test piece in parallel to the rolling direction of the blackplate shall be collected from a test material. 16.4.4

Bending operation of test piece

For the bending operation of the test piece, a manual vice shall be used to bend the test piece in the length direction of the test piece as shown in Figure 2. However, if no vice can be used, an appropriate method may be used.

Length direction of the test piece

Figure 2 ― Direction of bending test 16.5 16.5.1

Tensile test General requirements of test

The general requirements of the tensile test shall comply with clause 5. (Mechanical properties) of KS D 0001.

16

KS D 3030:2013

16.5.2

Sampling method for test materials

For the test materials, one sheet shall be collected for every 50 t and its fraction of the product with the same dimensions and coating weight. 16.5.3

Test piece

The test piece shall be no.5 test piece in KS B 0801. One test piece shall be collected from the test material in the directions indicated in Table 10 and Table 11. 16.5.4

Test method

The test method shall comply with KS B 0802 16.5.5

Thickness used for calculation of tensile strength

The thickness used for calculation of tensile strength shall be the actual thickness after removal of the plating layer or the actual thickness including the plating layer minus the equivalent plating thickness.

17 Inspection 17.1

Inspection

The inspection shall satisfy the following requirements: a) b) c) d) e) f)

The The The The The The

17.2

coating weight shall conform to clause 6. mechanical properties shall conform to clause 9. dimensions shall conform to clause 12. shapes shall conform to clause 13. weights shall conform to clause 14. appearance shall conform to clause 15.

Re-inspection

If any part of the coating weight test, bending test, and tensile test records does not conform to the specifications, The tests that do not conform to the specifications may be retested in accordance with clause 5.4 (Retest) of KS D 0001 and its compliance shall be determined by the result.

18 Markings The sheets and coils that pass the inspection shall be marked with the following information for each package or bundle in an appropriate method. However, the following information may be marked appropriately for each sheet by agreement between client and manufacturer. a) Designations (for corrugated sheets, the shape symbol of corrugated sheet shall be included) b) Symbols of skin pass processing, chemical conversion treatment, oiling, etc. NOTE These designations shall be marked when the client specifies them. c) Coating weight designations d) Dimensions (marked thickness only is acceptable for one sheet) e) Number of sheets or weight (may be omitted for one sheet) f) Manufacturer name or its abbreviation g) Product identification number

17

KS D 3030:2013

19 Confirmation when ordering To specify items properly in accordance with this standard, the client and manufacturer are advised to include the following information in the transaction sheet or order sheet. a) Designations (Table 1 and Table 2) b) Dimensions (see Table 12 and Table 13 for standard marked thickness, standard width, and standard length) c) Skin pass processing d) Coating weight designations (Table 5) e) Designations of chemical conversion treatment (Table 6) f) Oiling symbol (Table 7) g) Maximum weight and minimum weight of one bundle of products or for one coil h) Total order weight i) Tolerance of width for hot-rolled blackplate (Table 18) j) Inner and outer diameters for coils k) Application, processing method, etc. if possible. NOTE

Naming convention: The naming convention for sheets and coils shall conform to the following. a) Sheets SGMCC

○○○

M18

Coating weight designations

0.27

×

914

×

1 829

Marked thickness

Width

Length

(mm)

(mm)

(mm)

Skin pass symbol, chemical conversion symbol, oiling symbol Designations(for general)

b) Coils SGMCC

○○○

M22

Coating weight designations

0.60

×

914

Marked thickness

Width

(mm)

(mm)

×

C

Length if the marking of length is required

Skin pass symbol, chemical conversion symbol, oiling symbol Designations (for general)

c) Roofs (Coil) SGMC340R

○○○

M27

Coating weight designations

0.60

×

914

Marked thickness

Width

(mm)

(mm)

×

C

Length if the marking of length is required

Skin pass symbol, chemical conversion symbol, oiling symbol Designations (for roofs using the product for structures)

18

KS D 3030:2013 d) Corrugated sheets using general hard plates SGMCH W2 M12 0.25

Coating weight designations

×

762

×

1 829

Marked thickness

Width

Length

(mm)

(mm)

(mm)

Shape (corrugated sheet no.2, small roughs) Designations (for general hard materials)

20 Report If the client requested it in advance, the manufacturer shall prepare and submit an inspection document to the client. In this case, the report shall conform to clause 9. (Report) of KS D 0001.

19

KS D 3030:2013

Annex A (Normative) Symbols for marked thickness and coating weight of sheets and coils for roof and building shell A.1 Scope This Annex specifies the marked thickness and the symbols indicating the coating weight of sheets and coils for roofs and building shells (cold-rolled blackplate is used).

A.2 Marked thickness and coating weight marking method The marked thickness and coating weight designations for sheets and coils for roofs and building shells shall conform to Table A.1. Table A.1 ― Marked thickness and coating weight designations Application Roofs

Building shells

NOTE

20

Marked thickness mm

Coating weight designations

0.34 or greater 1.0 or smaller

M25, M27

Greater than 1.0

M27

0.27 or greater 0.50 or smaller

M18, M22, M27

Greater than 0.50 and 1.0 or smaller

M22, M27

Greater than 1.0

M27

The application of M35 and M45 may be agreed on between client and manufacturer.

KS D 3030:2013

Annex B (Normative) Marked thickness of corrugated sheets, coating weight designations and standard dimensions B.1 Scope This annex specifies the marked thickness, coating weight designations and standard dimensions of corrugated sheets.

B.2 Marked thickness and coating weight designations The marked thickness and coating weight designations applied to corrugated sheets shall conform to Table B.1. Table B.1 ― Marked thickness and coating weight designations Marked thickness mm

Coating weight designations

Note －

0.25 or greater and 0.27 or smaller

M12

0.27 or greater and 0.30 or smaller

Specific application

0.27 or greater and 0.50 or smaller

M18, M22, M25, M27

－

Greater than 0.50 and 1.0 or smaller

M22, M25, M27

－

NOTE

The application of M35 and M45 may be agreed on between client and manufacturer.

B.3 Standard dimensions The standard dimensions of corrugated sheets shall conform to the following. B.3.1 Standard marked thickness The standard marked thickness of corrugated sheets shall conform to Table B.2. Table B.2 ― Standard marked thickness Dimensions in millimetres 0.25

0.27

0.30

0.35

0.40

0.50

0.60

0.80

1.0

B.3.2 Standard width and standard length before trough processing The standard width and standard length before trough processing shall conform to Table B.3.

21

KS D 3030:2013 Table B.3 ― Standard width and standard length Dimensions in millimetres Standard with before adding troughs

22

Standard length

762

1 829

2 134

2 438

2 743

3 048

3 353

3 658

914

1 829

2 314

2 438

2 743

3 048

3 353

3 658

1 000

2 000

KS D 3030:2013

Annex C (Normative) Coating weight test method by X-ray fluorescent spectrometry for hot-dip zinc-aluminum-magnesium alloy-coated steel sheets and coils C.1 Scope This annex specifies the coating weight test method by X-ray fluorescent spectrometry for hot-dip zincaluminum-magnesium alloy-coated steel sheets and coils.

C.2 Test piece C.2.1 Test piece size 2

2

The test piece size shall be sufficient for the fluorescent X-ray radiation area of 314 mm to 2 518 mm . C.2.2 Sampling location of test piece The test piece shall be collected from the location indicated in Figure C.1 from the test material sampled in accordance with clause 16.2.1 of the main body. However, the zinc coating weight at the same location as this may be measured without sampling the test piece. Dimensions in millimetres Plating direction

Figure C.1 ― Sampling location of test piece

C.3 Test apparatus Any of the test apparatuses in clause C.3.1 or C.3.2 may be used depending on the source of the

23

KS D 3030:2013 radiation used for excitation of the test piece (see KS M 0017). C.3.1 Using X-ray tube for radiation source The test apparatus using an x-ray tube for radiation source shall be as follows. a) An example of the apparatus is shown in Figure C.2. Test piece

Spectroscope and radiation receiver unit

Collimator or slit Detector

Counter and recorder unit

Spectrum crystals X-ray tube Goniometer

X-ray generator unit High-voltage power for X-ray tube

High voltage power for detector

Timer Counter and recorder

Gas replacement or exhaust unit

Control unit

Operation circuit unit

Power stabilizer

Figure C.2 ― Test apparatus of the X-ray fluorescent spectrometry (using X-ray tube) b) X-ray generator unit: This unit consists of an X-ray tube that can obtain sufficient X-ray dose for measuring the component elements of the test piece and a power supplier that can supply the required acceleration voltage and tube current. c) Spectroscope and radiation receiver unit: This unit detects the fluorescent X-ray of the zinc generated by the excitation by the irradiated X-ray. It consists of a sample room, goniometer, collimator or slit, spectrum crystals and detector. The detector is composed of Geiger-Muller counter, scintillation counter, etc. d) Counter and recorder unit: This unit measures, indicates and records the output of the detector. Many of these units have an operation circuit unit for automation of measurement. It is composed of ratemeter, proportional amplifier, pulse height analyzer, scaler, timer, and printer. C.3.2 Using radioisotope for radiation source The test apparatus using an x-ray tube for radiation source shall be as follows.

24

KS D 3030:2013 a) An example of the apparatus is shown in Figure C.3. Counter and recorder unit

Detector and spectroscope unit

Radiation source unit Radioisotope radiation source Collimator or slit

Pulse height analyzer (Signal processing circuit)

Counter and recorder

Detector

Timer

Test piece

High-voltage power for detector

Operation circuit unit

Power circuit unit

Figure C.3 ― Test apparatus of the X-ray fluorescent spectrometry (using radioisotope) b) Radiation source unit: A radioisotope radiation source that can obtain sufficient X-ray dose for exciting and measuring the component elements is used. c) Detector and spectroscope unit: This unit detects and spectroscopes the fluorescent X-ray of zinc that is excited and generated by the  -ray radiation. It is composed of sample room, collimator or slit, detector, proportional amplifier, pulse height analyzer, etc. For detectors, a proportional counter tube, scintillation counter, Geiger-Muller counter, etc. are used. d) Counter and recorder unit: This unit measures, indicates and records the output of the pulse height analyzer. Many of these units have an operation circuit unit for automation of measurement. It is composed of ratemeter, scaler, timer, and printer.

C.4 Measured spectrum rays The measured spectrum rays shall be primary ray of ZnK  with a wavelength of 14.35 nm.

C.5 Operation The operation shall conform to the following: a) Attach the test piece correctly to the sample room of the apparatus. b) Radiate X-ray or  -ray to the test piece in accordance with the predefined conditions and read the fluorescent X-ray dose with an indicator.

25

KS D 3030:2013 c) Using a test piece with the zinc coating weight determined by the method specified in KS D 0201, draw a calibration curve from relational equation of the intensity of fluorescent X-ray and the zinc coating weight . 2 2 d) Convert the value on the indicator to the zinc coating weight per 1 m (one side, g/m ) based on the chart (calibration curve) corresponding to the established conditions. e) Repeat the above operation for the back of the test piece and get the zinc coating weight. Use the sum of the zinc coating weight on the surface and back as zinc coating weight of the test piece (both 2 sides, g/m ).

26

－end－