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SFNCM 740 R

Japan JIS SFNCM740R 一般用途用镍铬钼钢锻件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SFNCM740R / SFNCM 740 R
Category Grade Standard Region/Area Standard Content
Metals SFNCM 740 R JIS G3222 Japan 一般用途用镍铬钼钢锻件

Chemical composition(mass fraction)(wt.%) of the SFNCM 740 R

Element Min Max Similar

Mechanical Properties of steel grade SFNCM 740 R

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)
949 (≥) 191 (≥) 21 34 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 334

Physical Properties of steel grade SFNCM 740 R

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
24 - -     0.44 -  
491 874 - 23.3 112   -  
295 - 34 11.2   323 213

Heat Treatment of steel grade SFNCM 740 R

Heat treated : 1978°C - 1961°C

Technological Curves of steel grade SFNCM 740 R

Cross Reference Table (Equivalent Grade) of SFNCM 740 R

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