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France AFNOR NF M20S-M Casting products. Magnetic cast steel grades and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: M20S-M / M 20S-M
Category Grade Standard Region/Area Standard Content
Metals M 20S-M NF A32-052 France Casting products. Magnetic cast steel grades

Chemical composition(mass fraction)(wt.%) of the M 20S-M

Element Min Max Similar
S - 0.0400 -
P - 0.0400 -

Mechanical Properties of steel grade M 20S-M

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)
322 (≥) 351 (≥) 11 44 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade M 20S-M

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 - -     0.24 -  
998 352 - 33.3 113   -  
842 - 23 22.2   124 322

Heat Treatment of steel grade M 20S-M

Heat treated : 1528°C - 1611°C

Technological Curves of steel grade M 20S-M

Cross Reference Table (Equivalent Grade) of M 20S-M

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