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SNCM 220 H

Japan JIS SNCM220H 指定的淬透性结构钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SNCM220H / SNCM 220 H
Category Grade Standard Region/Area Standard Content
Metals SNCM 220 H JIS G4052 Japan 指定的淬透性结构钢带

Chemical composition(mass fraction)(wt.%) of the SNCM 220 H

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0300 -
P - 0.0300 -
Ni 0.3500 0.7500 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.9500 -
Cu - 0.3000 -
Cr 0.3500 0.6500 -
C 0.1700 0.2300 -

Mechanical Properties of steel grade SNCM 220 H

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)
844 (≥) 571 (≥) 34 11 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 122

Physical Properties of steel grade SNCM 220 H

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 - -     0.22 -  
951 534 - 14.3 132   -  
127 - 21 12.2   243 233

Heat Treatment of steel grade SNCM 220 H

Heat treated : 1967°C - 1957°C

Technological Curves of steel grade SNCM 220 H

Cross Reference Table (Equivalent Grade) of SNCM 220 H

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