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America SAE 50B40RH Restricted hardenability bands for selected alloy steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 50B40RH / 50B40 RH
Category Grade Standard Region/Area Standard Content
Metals 50B40 RH SAE J 1868 America Restricted hardenability bands for selected alloy steels

Chemical composition(mass fraction)(wt.%) of the 50B40 RH

Element Min Max Similar

Mechanical Properties of steel grade 50B40 RH

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)
143 (≥) 296 (≥) 43 12 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade 50B40 RH

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
42 - -     0.41 -  
725 826 - 34.3 421   -  
418 - 34 32.2   244 214

Heat Treatment of steel grade 50B40 RH

Heat treated : 1988°C - 1579°C

Technological Curves of steel grade 50B40 RH

Cross Reference Table (Equivalent Grade) of 50B40 RH

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