Table of Material Properties For Structural Steel S235, S275, S355, S420 [PDF]

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Project:

Msc

Subject:

harvester

Designer: Date:

julus Sun Jul 07 2019

Eurocode 3

Table of design material properties for structural steel Description: Design aid - Table of design material properties and mechanical properties for structural steel including density, yield strength fy, ultimate strength fu and elastic modulus E According to: EN 1993-1-1:2005+AC2:2009 Sections 3.2.1, 3.2.6 Supported National Annexes: No Nationally De ned Parameters (NDPs) in the calculation

Tables Material Design Properties for Structural Steel S235, S275, S355, S420, S450, S460 according to EN1993-1-1 §3.2.6 Material Property

Value

Density ρ

≈ 7850 kg/m3

Unit weight γ

≈ 78.5 kN/m3

Modulus of elasticity E (Young's modulus)

210000 MPa

Shear modulus G

G = E / [2 ⋅ (1 + ν) ] ≈ 81000 MPa

Yield strength fy

see table below

Ultimate strength fu

see table below

Poisson's ratio in elastic range ν

0.30

Coe cient of linear thermal expansion α

12 ×10-6 °K-1

Structural Steel Strength Properties for elements with nominal thickness t ≤ 40 mm

Excel

EN10025-2 Hot rolled products Non-alloy structural steels

EN10025-3 Hot rolled products Normalized/normalized rolled weldable ne grain structural steels

Hot Therm weldabl

Symbol

Description

S235

S275

S355

S450

S275 N/NL

S355 N/NL

S420 N/NL

S460 N/NL

S275 M/ML

fy (MPa)

Yield strength

235

275

355

440

275

355

420

460

275

fu (MPa)

Ultimate strength

360

430

490

550

390

490

520

540

370

Structural Steel Strength Properties for elements with nominal thickness 40 mm < t ≤ 80 mm Excel

EN10025-2 Hot rolled products Non-alloy structural steels

EN10025-3 Hot rolled products Normalized/normalized rolled weldable ne grain structural steels

Hot Therm weldabl

Symbol

Description

S235

S275

S355

S450

S275 N/NL

S355 N/NL

S420 N/NL

S460 N/NL

S275 M/ML

fy (MPa)

Yield strength

215

255

335

410

255

335

390

430

255

fu (MPa)

Ultimate strength

360

410

470

550

370

470

520

540

360

Notes 1. Steel grades according to the standards EN 10025-2, EN 10025-3, EN 10025-4, EN 1002-5, EN 10025-6 are applicable for hot rolled structural steel. Steel grades with the designation 'H', according to the standard EN 10210-1 are applicable for hot nished structural hollow sections. Steel grades with the designation 'H', according to the standard EN 10219-1 are applicable for cold formed structural hollow sections. See Details below for the description of the relevant EN standard. 2. Steel sub-grades JR, J0, J2, K2 characterize the ability of steel to behave in a ductile manner and therefore avoid brittle fracture, especially at low temperatures. The fracture toughness of steel is characterized in EN 1993-1-10 in terms of the KV(T) value i.e. the impact energy in Joules [J]

required to fracture a Charpy V-notch specimen at a given test temperature T. Sub-grade JR correspond to a minimum KV of 27 J at Room temperature (+20°C). Sub-grade J0 correspond to a minimum KV of 27 J at 0°C. Sub-grade J2 correspond to a minimum KV of 27 J at -20°C. For more information see EN 1993-1-10.

Details Design values of structural steel material properties Nominal values of structural steel yield strength and ultimate strength For structural design according to Eurocode 3 (EN1993-1-1), the nominal values of the yield strength fy and the ultimate strength fu for structural steel are obtained as a simpli cation from EN1993-1-1 Table 3.1, which is reproduced above in tabular format. The provided values for fy and fu are nominal values. For the purpose of structural design appropriate material safety factors are applicable, such as the factors γM0, γM1, γM2 etc. in accordance with EN1993-11 §6.1. The steel classes are de ned in the corresponding standards: EN 10025-2 Hot rolled products of structural steels. Technical delivery conditions for non-alloy structural steels EN 10025-3 Hot rolled products of structural steels. Technical delivery conditions for normalized/normalized rolled weldable ne grain structural steels EN 10025-4 Hot rolled products of structural steels. Technical delivery conditions for thermomechanical rolled weldable ne grain structural steels EN 10025-5 Hot rolled products of structural steels. Technical delivery conditions for structural steels with improved atmospheric corrosion resistance EN 10025-6 Hot rolled products of structural steels. Technical delivery conditions for at products of high yield strength structural steels in the quenched and tempered condition EN 10210-1 Hot nished structural hollow sections of non-alloy and ne grain steels. Technical delivery requirements EN 10219-1 Cold formed welded structural hollow sections of non-alloy and ne grain steels. Technical delivery requirements

Unit weight and density of structural steel The unit weight of structural steel is speci ed in the design standard EN 1991-1-1 Table A.4 between 77.0 kN/m3 and 78.5 kN/m3. For structural design it is standard practice to consider the unit weight of structural steel equal to γ = 78.5 kN/m3 and the density of structural steel approximately ρ = 7850 kg/m3.

Modulus of elasticity of structural steel The modulus of elasticity (Young's modulus) of structural steel is speci ed in the design standard EN 1993-1-1 Section 3.2.6. For structural design the modulus of elasticity of structural steel is considered as E = 210000 MPa.

Design values of additional material mechanical properties for structural steel

According to EN1993-1-1 §3.2.6, the design values of the material properties and coe cients for structural steel are: Modulus of elasticity (Young's modulus): E = 210000 MPa Shear modulus: G = E / [ 2⋅(1 + ν) ] = 80769 MPa ≈ 81000 MPa Poisson's ratio in elastic range: ν = 0.30 Coe cient of linear thermal expansion: α = 12 ×10-6 °K-1 According to EN1991-1-3 §3.2.6, for calculating the structural e ects of unequal temperatures in composite concrete-steel structures to EN 1994 the coe cient of linear thermal expansion may be taken as α = 10 ×10-6 °K-1, i.e. the same as the coe cient of thermal expansion of concrete.

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