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Japan JIS STK540 一般结构用碳素钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: STK540 / STK540
Category Grade Standard Region/Area Standard Content
Metals STK540 JIS G3444 Japan 一般结构用碳素钢管

Chemical composition(mass fraction)(wt.%) of the STK540

Element Min Max Similar
Si - 0.5500 -
S - 0.0400 -
P - 0.0400 -
Other - - -
Mn - 1.5000 -
C - 0.2300 -

Mechanical Properties of steel grade STK540

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
635 (≥) 629 (≥) 41 23 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 143

Physical Properties of steel grade STK540

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
23 - -     0.23 -  
821 452 - 44.3 223   -  
672 - 11 24.2   341 322

Heat Treatment of steel grade STK540

Heat treated : 1393°C - 1471°C

Technological Curves of steel grade STK540

Cross Reference Table (Equivalent Grade) of STK540

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