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SWRCHB 731

Japan JIS SWRCHB731 硼钢线材,冷镦和冷锻 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SWRCHB731 / SWRCHB 731
Category Grade Standard Region/Area Standard Content
Metals SWRCHB 731 JIS G3508 Japan 硼钢线材,冷镦和冷锻

Chemical composition(mass fraction)(wt.%) of the SWRCHB 731

Element Min Max Similar
Si 0.1000 0.3500 -
S - 0.0300 -
P - 0.0300 -
Mn 1.2000 1.5000 -
C 0.2800 0.3400 -
B 0.0008 - -

Mechanical Properties of steel grade SWRCHB 731

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)
824 (≥) 729 (≥) 21 43 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 112

Physical Properties of steel grade SWRCHB 731

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
21 - -     0.33 -  
414 695 - 14.3 344   -  
131 - 42 42.2   134 121

Heat Treatment of steel grade SWRCHB 731

Heat treated : 1379°C - 1622°C

Technological Curves of steel grade SWRCHB 731

Cross Reference Table (Equivalent Grade) of SWRCHB 731

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