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SMn 438

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Japan JIS SMn438 机械结构用锰钢和锰铬钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SMn438 / SMn 438
Category Grade Standard Region/Area Standard Content
Metals SMn 438 JIS G4106 Japan 机械结构用锰钢和锰铬钢

Chemical composition(mass fraction)(wt.%) of the SMn 438

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0300 -
P - 0.0300 -
Ni - 0.2500 -
Mn 1.3500 1.6500 -
Cu - 0.3000 -
Cr - 0.3500 -
C 0.3500 0.4100 -
Si 0.1500 0.3500 -
S - 0.0300 -
P - 0.0300 -
Ni - 0.2500 -
Mn 1.3500 1.6500 -
Cu - 0.3000 -
Cr - 0.3500 -
C 0.3500 0.4100 -

Mechanical Properties of steel grade SMn 438

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)
639 (≥) 654 (≥) 41 23 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 144

Physical Properties of steel grade SMn 438

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 - -     0.32 -  
893 238 - 23.3 431   -  
914 - 24 11.2   442 343

Heat Treatment of steel grade SMn 438

Heat treated : 1816°C - 1746°C

Technological Curves of steel grade SMn 438

Cross Reference Table (Equivalent Grade) of SMn 438

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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