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SA-29 Grade 40L37

America ASME SA-29Grade40L37 热加工与冷精整碳钢和合金钢棒材通用要求 and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals SA-29 Grade 40L37 ASME SA-29/SA-29M America 热加工与冷精整碳钢和合金钢棒材通用要求

Chemical composition(mass fraction)(wt.%) of the SA-29 Grade 40L37

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0400 -
Pb 0.1500 0.3500 -
P - 0.0350 -
Ni - 0.2500 -
Mo 0.2000 0.3000 -
Mn 0.7000 0.9000 -
Cu - 0.3500 -
Cr - 0.2000 -
C 0.3500 0.4000 -

Mechanical Properties of steel grade SA-29 Grade 40L37

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)
951 (≥) 391 (≥) 21 14 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 112

Physical Properties of steel grade SA-29 Grade 40L37

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
44 - -     0.23 -  
854 859 - 44.3 232   -  
363 - 41 31.2   434 211

Heat Treatment of steel grade SA-29 Grade 40L37

Heat treated : 1952°C - 1969°C

Technological Curves of steel grade SA-29 Grade 40L37

Cross Reference Table (Equivalent Grade) of SA-29 Grade 40L37

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