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Japan JIS STKM15A 机械结构用碳素钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: STKM15A / STKM15A
Category Grade Standard Region/Area Standard Content
Metals STKM15A JIS G3445 Japan 机械结构用碳素钢管

Chemical composition(mass fraction)(wt.%) of the STKM15A

Element Min Max Similar

Mechanical Properties of steel grade STKM15A

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)
312 (≥) 953 (≥) 44 12 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 414

Physical Properties of steel grade STKM15A

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
31 - -     0.14 -  
613 194 - 44.3 232   -  
784 - 41 14.2   131 222

Heat Treatment of steel grade STKM15A

Heat treated : 1534°C - 1987°C

Technological Curves of steel grade STKM15A

Cross Reference Table (Equivalent Grade) of STKM15A

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