Material property table for structural steel S235, S275, S355, S420 (2023)

Table of Contents
Design values ​​of the material properties of structural steel Nominal yield strength and strength limit of mild steel Unit weight and density of structural steel Elastic modulus of structural steel Design values ​​of the mechanical properties of filler metals for structural steel Videos

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Description:
Design Aid - Table of design material properties and mechanical properties for mild steel including density, yield strength fy, strength limit fu and Young's modulus E
Accordingly:
EN 1993-1-1:2005+AC2:2009 sections 3.2.1, 3.2.6
Supported national attachments:
No Nationally Defined Parameters (NDPs) in the calculation
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    tables
    Material properties for structural steel S235, S275, S355, S420, S450, S460 according to EN1993-1-1 §3.2.6
    material propertybravery
    densityR≈ 7850 kg/m3
    unit of weightC≈ 78,5 kN/m3
    modulus of elasticityE
    (Modulus of elasticity)    		210000 MPa
    Screen moduleGG=E/ [2 ⋅ (1 +N) ] ≈ 81000 MPa
    Stretch limitFjSee table below
    Maximum powerFOfSee table below
    Poisson's ratio in the elastic rangeN0,30
    Linear thermal expansion coefficientA12×10-6°K-1

    Strength properties of structural steel for elements of nominal thicknessT≤ 40 mm

    Strength properties of structural steel for elements of nominal thicknessT≤ 40 mm
    EN10025-2
    Hot rolled products -
    Unalloyed structural steels    		EN10025-3
    Hot rolled products -
    Normalized/normalized rolled weldable fine grain structural steels    		EN10025-4
    Hot rolled products -
    Weldable thermomechanically laminated fine-grain structural steels    		EN10025-5
    Hot Rolled Products-
    Structural steels with better resistance to atmospheric corrosion    		EN10025-6
    Hot Rolled Products-
    High-performance structural steels in tempered condition    		EN10210-1
    Hot finished hollow sections for steel construction -
    Unalloyed and fine grain steels    		EN10219-1
    Cold Formed Welded Hollow Sections -
    Unalloyed and fine grain steels
    Symbol Description S235 S275 S355 S450 S275N/NL S355N/NL S420N/NL S460N/NL S275M/ML S355M/ML S420M/ML S460M/ML S235W S355W S460Q/QL/QL1 S235H S275H S355H S275 NH/NLH S355NH/NLH S420NH/NLH S460 NH/NLH S235H S275H S355H S275 NH/NLH S355NH/NLH S460 NH/NLH S275 MH/MLH S355 MH/MLH S420MH/MLH S460 MH/MLH
    Fj(MPa) Stretch limit 235 275 355 440 275 355 420 460 275 355 420 460 235 355 460 235 275 355 275 355 420 460 235 275 355 275 355 460 275 355 420 460
    FOf(MPa) Maximum power 360 430 490 550 390 490 520 540 370 470 520 540 360 490 570 360 430 510 390 490 540 560 360 430 510 370 470 550 360 470 500 530

    Strength properties of structural steel for elements with a nominal thickness < 40 mmT≤ 80 mm

    Strength properties of structural steel for elements with a nominal thickness < 40 mmT≤ 80 mm
    EN10025-2
    Hot rolled products -
    Unalloyed structural steels    		EN10025-3
    Hot rolled products -
    Normalized/normalized rolled weldable fine grain structural steels    		EN10025-4
    Hot rolled products -
    Weldable thermomechanically laminated fine-grain structural steels    		EN10025-5
    Hot Rolled Products-
    Structural steels with better resistance to atmospheric corrosion    		EN10025-6
    Hot Rolled Products-
    High-performance structural steels in tempered condition    		EN10210-1
    Hot finished hollow sections for steel construction -
    Unalloyed and fine grain steels    		EN10219-1
    Cold Formed Welded Hollow Sections -
    Unalloyed and fine grain steels
    Symbol Description S235 S275 S355 S450 S275N/NL S355N/NL S420N/NL S460N/NL S275M/ML S355M/ML S420M/ML S460M/ML S235W S355W S460Q/QL/QL1 S235H S275H S355H S275 NH/NLH S355NH/NLH S420NH/NLH S460 NH/NLH S235H S275H S355H S275 NH/NLH S355NH/NLH S460 NH/NLH S275 MH/MLH S355 MH/MLH S420MH/MLH S460 MH/MLH
    Fj(MPa) Stretch limit 215 255 335 410 255 335 390 430 255 335 390 430 215 335 440 215 255 335 255 335 390 430 - - - - - - - - - -
    FOf(MPa) Maximum power 360 410 470 550 370 470 520 540 360 450 500 530 340 490 550 340 410 490 370 470 520 550 - - - - - - - - - -
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    Nuts
    1. Steel grades according to EN 10025-2, EN 10025-3, EN 10025-4, EN 1002-5, EN 10025-6 apply to hot-rolled structural steel. Steel grades with the designation "H" according to EN 10210-1 apply to hot-finished hollow sections for steel construction. Steel grades with the designation "H" according to EN 10219-1 are applicable for cold-formed hollow sections for structural steelwork. See details below for the description of the relevant EN standard.
    2. The steel subtypes JR, J0, J2, K2 characterize the ability of the steel to behave ductilely and thus to avoid brittle fracture, especially at low temperatures. The fracture toughness of steel is characterized in EN 1993-1-10 by the KV(T) value, i. H. the impact energy in joules [J] required to break a Charpy V-notch specimen at a specified T-test temperature. Background JR corresponds to a minimum KV of 27 J at room temperature (+20°C). Background J0 corresponds to a minimum KV of 27 J at 0°C. Background J2 corresponds to a minimum KV of 27 J at -20°C. For more information see EN 1993-1-10.
    details

    Design values ​​of the material properties of structural steel

    Nominal yield strength and strength limit of mild steel

    For structural design according to Eurocode 3 (EN1993-1-1), nominal values ​​of yield strengthFjand ultimate strengthFOffor structural steel one obtains as a simplification ofEN1993-1-1 Table 3.1, which is tabulated above.

    The intended valuesFjeFOfare face values. Corresponding material safety factors apply to the structural design, e.g. B. the factorsCM0,CM1,CM2etc. accordinglyEN1993-1-1 §6.1.

    The steel grades are defined in the relevant standards:

    • EN 10025-2 Hot rolled structural steel products. Technical delivery conditions for unalloyed structural steels

    • EN 10025-3 Hot rolled structural steel products. Technical delivery conditions for weldable, fine-grained, normalized/normalized rolled structural steels

    • EN 10025-4 Hot rolled structural steel products. Technical delivery conditions for weldable thermomechanically laminated fine-grain structural steels

    • EN 10025-5 Hot rolled structural steel products. Technical delivery conditions for structural steels with better resistance to atmospheric corrosion

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    • EN 10025-6 Hot rolled structural steel products. Technical delivery conditions for flat products made of highly elastic structural steel in the tempered condition

    • EN 10210-1 Hot finished structural hollow sections made of non-alloy and fine-grained steels. Technical delivery conditions

    • EN 10219-1 Cold-formed welded structural hollow sections made of non-alloy and fine-grained steels. Technical delivery conditions

    Unit weight and density of structural steel

    The unit weight of structural steel is given in the design standardEN 1991-1-1 Table A.4between 77.0 kN/m3is 78.5 kN/m3. It is common practice for structural design to consider the unit weight of structural steel immediatelyC= 78,5 kN/m3and the density of structural steel approx.R= 7850 kg/m3.

    Elastic modulus of structural steel

    The modulus of elasticity (Young's modulus) of structural steel is specified in the design codeEN 1993-1-1 clause 3.2.6. The modulus of elasticity of structural steel is assumed for the structural designE= 210000 MPa.

    Design values ​​of the mechanical properties of filler metals for structural steel

    AccordinglyEN1993-1-1 §3.2.6, the design values ​​of material properties and coefficients for mild steel are:

    Modulus of elasticity (E modulus):
    E= 210000 MPa
    Screen module:
    G=E/ [ 2⋅(1 +N) ] = 80769 MPa ≈ 81000 MPa
    Poisson's ratio in the elastic band:
    N= 0,30
    Coefficient of linear thermal expansion:
    A= 12 × 10-6°K-1

    AccordinglyEN1991-1-3 §3.2.6, to calculate the static effects of unequal temperatures in mixed concrete and steel structures according to EN 1994, the linear thermal expansion coefficient can be taken into accountA= 10 × 10-6°K-1, i.e. the thermal expansion coefficient of concrete.

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