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STM-C 640

Japan JIS STM-C640 钻探用无缝钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: STM-C640 / STM-C 640
Category Grade Standard Region/Area Standard Content
Metals STM-C 640 JIS G3465 Japan 钻探用无缝钢管

Chemical composition(mass fraction)(wt.%) of the STM-C 640

Element Min Max Similar
S - 0.0400 -
P - 0.0400 -

Mechanical Properties of steel grade STM-C 640

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)
788 (≥) 446 (≥) 23 22 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 243

Physical Properties of steel grade STM-C 640

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
22 - -     0.14 -  
822 971 - 33.3 324   -  
139 - 23 14.2   244 331

Heat Treatment of steel grade STM-C 640

Heat treated : 1116°C - 1855°C

Technological Curves of steel grade STM-C 640

Cross Reference Table (Equivalent Grade) of STM-C 640

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