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12 SMn 20

EU EU 12SMn20 高速削切钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 12SMn20 / 12 SMn 20
Category Grade Standard Region/Area Standard Content
Metals 12 SMn 20 EU 87 EU 高速削切钢

Chemical composition(mass fraction)(wt.%) of the 12 SMn 20

Element Min Max Similar

Mechanical Properties of steel grade 12 SMn 20

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)
154 (≥) 518 (≥) 23 22 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 311

Physical Properties of steel grade 12 SMn 20

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
21 - -     0.44 -  
275 684 - 22.3 414   -  
767 - 12 43.2   134 232

Heat Treatment of steel grade 12 SMn 20

Heat treated : 1673°C - 1662°C

Technological Curves of steel grade 12 SMn 20

Cross Reference Table (Equivalent Grade) of 12 SMn 20

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