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SWRCHB 620

Japan JIS SWRCHB620 硼钢线材,冷镦和冷锻 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SWRCHB620 / SWRCHB 620
Category Grade Standard Region/Area Standard Content
Metals SWRCHB 620 JIS G3508 Japan 硼钢线材,冷镦和冷锻

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

Element Min Max Similar
Si 0.1000 0.3500 -
S - 0.0300 -
P - 0.0300 -
Ni - 0.2000 -
Mn 1.1000 1.4000 -
Cu - 0.3000 -
Cr - 0.2000 -
C 0.1700 0.2300 -
B 0.0008 - -
Si 0.1000 0.3500 -
S - 0.0300 -
P - 0.0300 -
Mn 1.1000 1.4000 -
C 0.1700 0.2300 -
B 0.0008 - -

Mechanical Properties of steel grade SWRCHB 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)
459 (≥) 592 (≥) 43 11 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 424

Physical Properties of steel grade SWRCHB 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
24 - -     0.24 -  
468 225 - 34.3 243   -  
725 - 22 44.2   444 342

Heat Treatment of steel grade SWRCHB 620

Heat treated : 1524°C - 1796°C

Technological Curves of steel grade SWRCHB 620

Cross Reference Table (Equivalent Grade) of SWRCHB 620

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