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SMn 420

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Japan JIS SMn420 机械结构用锰钢和锰铬钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SMn420 / SMn 420
Category Grade Standard Region/Area Standard Content
Metals SMn 420 JIS G4106 Japan 机械结构用锰钢和锰铬钢

Chemical composition(mass fraction)(wt.%) of the SMn 420

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0300 -
P - 0.0300 -
Ni - 0.2500 -
Mn 1.2000 1.5000 -
Cu - 0.3000 -
Cr - 0.3500 -
C 0.1700 0.2300 -
Si 0.1500 0.3500 -
S - 0.0300 -
P - 0.0300 -
Ni - 0.2500 -
Mn 1.2000 1.5000 -
Cu - 0.3000 -
Cr - 0.3500 -
C 0.1700 0.2300 -

Mechanical Properties of steel grade SMn 420

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)
235 (≥) 287 (≥) 32 23 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 132

Physical Properties of steel grade SMn 420

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
41 - -     0.43 -  
835 433 - 24.3 141   -  
465 - 44 31.2   221 222

Heat Treatment of steel grade SMn 420

Heat treated : 1748°C - 1312°C

Technological Curves of steel grade SMn 420

Cross Reference Table (Equivalent Grade) of SMn 420

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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