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SWCHB 620

Japan JIS SWCHB620 冷打及冷鍛用硼鋼鋼線 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SWCHB620 / SWCHB 620
Category Grade Standard Region/Area Standard Content
Metals SWCHB 620 JIS G3545 Japan 冷打及冷鍛用硼鋼鋼線

Chemical composition(mass fraction)(wt.%) of the SWCHB 620

Element Min Max Similar

Mechanical Properties of steel grade SWCHB 620

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)
643 (≥) 733 (≥) 44 14 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 113

Physical Properties of steel grade SWCHB 620

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 - -     0.11 -  
254 825 - 31.3 412   -  
665 - 33 22.2   111 334

Heat Treatment of steel grade SWCHB 620

Heat treated : 1779°C - 1348°C

Technological Curves of steel grade SWCHB 620

Cross Reference Table (Equivalent Grade) of SWCHB 620

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