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Japan JIS 50-HH370 热硬化钢轨 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 50-HH370 / 50-HH370
Category Grade Standard Region/Area Standard Content
Metals 50-HH370 JIS E1120 Japan 热硬化钢轨

Chemical composition(mass fraction)(wt.%) of the 50-HH370

Element Min Max Similar
V - 0.0300 -
Si 0.1000 0.6500 -
S - 0.0200 -
P - 0.0300 -
Ni - 0.0300 -
Mn 0.8000 1.2000 -
Cr - 0.2500 -
C 0.7200 0.8200 -

Mechanical Properties of steel grade 50-HH370

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)
123 (≥) 574 (≥) 44 43 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 132

Physical Properties of steel grade 50-HH370

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
41 - -     0.32 -  
658 166 - 22.3 412   -  
316 - 14 43.2   422 332

Heat Treatment of steel grade 50-HH370

Heat treated : 1396°C - 1585°C

Technological Curves of steel grade 50-HH370

Cross Reference Table (Equivalent Grade) of 50-HH370

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