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G42 CrMo 4

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France AFNOR NF G42CrMo4 一般工程使用的钢铸件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: G42CrMo4 / G42 CrMo 4
Category Grade Standard Region/Area Standard Content
Metals G42 CrMo 4 NF EN 10293 France 一般工程使用的钢铸件

Chemical composition(mass fraction)(wt.%) of the G42 CrMo 4

Element Min Max Similar
V - 0.0500 -
Si - 0.6000 -
S - 0.0200 -
P - 0.0300 -
Ni - 0.4000 -
Mo 0.1500 0.3500 -
Mn - 1.0000 -
Cr 0.8000 1.2000 -
C 0.3900 0.4500 -
V - 0.0500 -
Si - 0.6000 -
S - 0.0200 -
P - 0.0250 -
Ni - 0.4000 -
Mo 0.1500 0.3000 -
Mn 0.6000 1.0000 -
Cu - 0.3000 -
Cr 0.8000 1.2000 -
C 0.3800 0.4500 -

Mechanical Properties of steel grade G42 CrMo 4

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)
748 (≥) 974 (≥) 11 43 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 411

Physical Properties of steel grade G42 CrMo 4

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
22 - -     0.22 -  
134 514 - 32.3 314   -  
983 - 32 41.2   131 334

Heat Treatment of steel grade G42 CrMo 4

Heat treated : 1272°C - 1475°C

Technological Curves of steel grade G42 CrMo 4

Cross Reference Table (Equivalent Grade) of G42 CrMo 4

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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