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France AFNOR NF 20M6-M 一般工程使用的钢铸件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20M6-M / 20 M6-M
Category Grade Standard Region/Area Standard Content
Metals 20 M6-M NF A32-054 France 一般工程使用的钢铸件

Chemical composition(mass fraction)(wt.%) of the 20 M6-M

Element Min Max Similar
Si - 0.6000 -
S - 0.0350 -
P - 0.0400 -
Mn - 1.7000 -
Fe - - -
C - 0.2300 -

Mechanical Properties of steel grade 20 M6-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)
114 (≥) 351 (≥) 32 43 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 233

Physical Properties of steel grade 20 M6-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
13 - -     0.43 -  
517 254 - 32.3 331   -  
814 - 24 12.2   342 142

Heat Treatment of steel grade 20 M6-M

Heat treated : 1855°C - 1749°C

Technological Curves of steel grade 20 M6-M

Cross Reference Table (Equivalent Grade) of 20 M6-M

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