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France AFNOR NF A37 Welded steel forgings for boilers and pressure vessels. Carbon and carbon manganese steels. Grades and types and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A37 / A 37
Category Grade Standard Region/Area Standard Content
Metals A 37 NF A36-601 France Welded steel forgings for boilers and pressure vessels. Carbon and carbon manganese steels. Grades and types

Chemical composition(mass fraction)(wt.%) of the A 37

Element Min Max Similar
Si - 0.3000 -
S - 0.0300 -
P - 0.0350 -
Mn 0.4000 - -
C - 0.1600 -

Mechanical Properties of steel grade A 37

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)
968 (≥) 827 (≥) 22 22 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 243

Physical Properties of steel grade A 37

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
11 - -     0.42 -  
747 158 - 23.3 424   -  
587 - 23 14.2   323 311

Heat Treatment of steel grade A 37

Heat treated : 1785°C - 1661°C

Technological Curves of steel grade A 37

Cross Reference Table (Equivalent Grade) of A 37

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