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SMn420

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SACM645 SMn433
#SMn420

Description

China CNS SMn420 China Taiwan Structural steel and SMn420 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: SMn420
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel SMn420 CNS China China Taiwan Structural steel
SCM418
SCM420
SCM421
SCM430
SCM432
SCM435
SCM440
SCM445
SCM822
SACM645

Chemical composition(mass fraction)(wt.%) of the SMn420

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Cu(%)
0.17-0.23 0.15-0.35 1.20-1.50 0.030 0.030 Max 0.35 0.25 0.30

Mechanical Properties of steel grade SMn420

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)
481 (≥) 986 (≥) 32 22 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 114

Physical Properties of steel grade SMn420

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
12 - -     0.22 -  
542 478 - 21.3 422   -  
415 - 11 44.2   321 124

Heat Treatment of steel grade SMn420

Heat treated : 1864°C - 1166°C

Technological Curves of steel grade SMn420

Cross Reference Table (Equivalent Grade) of SMn420

Grade Standard Country Application
SMn420H CNS China China Taiwan Structural steel
SMn420 CNS China China Taiwan Structural steel
SACM645 SMn433
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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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