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SCM421

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SCM420 SCM430
#SCM421

Description

China CNS SCM421 China Taiwan Structural steel and SCM421 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: SCM421
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel SCM421 CNS China China Taiwan Structural steel
SNCM431
SNCM439
SNCM447
SNCM616
SNCM625
SNCM630
SNCM815
SCM415
SCM418
SCM420

Chemical composition(mass fraction)(wt.%) of the SCM421

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) Cu(%)
0.17-0.23 0.15-0.35 0.70-1.00 0.030 0.030 0.90-1.20 0.25 0.15-0.30 0.30

Mechanical Properties of steel grade SCM421

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)
318 (≥) 129 (≥) 14 34 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 434

Physical Properties of steel grade SCM421

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
14 - -     0.31 -  
692 743 - 41.3 424   -  
221 - 32 11.2   423 422

Heat Treatment of steel grade SCM421

Heat treated : 1475°C - 1133°C

Technological Curves of steel grade SCM421

Cross Reference Table (Equivalent Grade) of SCM421

Grade Standard Country Application
SCM421 CNS China China Taiwan Structural steel
SCM420 SCM430
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Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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