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G 18 NiMoCr 3-7

Germany DIN G18NiMoCr3-7 热处理镍锰铬钼低合金钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: G18NiMoCr3-7 / G 18 NiMoCr 3-7
Category Grade Standard Region/Area Standard Content
Metals G 18 NiMoCr 3-7 -- Germany 热处理镍锰铬钼低合金钢

Chemical composition(mass fraction)(wt.%) of the G 18 NiMoCr 3-7

Element Min Max Similar
V - 0.0200 -
Sn - 0.0110 -
Si 0.3000 0.5000 -
S - 0.0100 -
P - 0.0120 -
Ni 0.6000 1.1000 -
N - 0.0150 -
Mo 0.4000 0.6000 -
Mn 0.7000 1.1000 -
Cu - 0.1200 -
Cr 0.3000 0.5000 -
C 0.1700 0.2300 -
As - 0.0250 -
Al 0.0200 0.0500 -

Mechanical Properties of steel grade G 18 NiMoCr 3-7

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)
616 (≥) 382 (≥) 31 42 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical Properties of steel grade G 18 NiMoCr 3-7

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
31 - -     0.21 -  
379 243 - 44.3 433   -  
748 - 31 31.2   441 442

Heat Treatment of steel grade G 18 NiMoCr 3-7

Heat treated : 1138°C - 1319°C

Technological Curves of steel grade G 18 NiMoCr 3-7

Cross Reference Table (Equivalent Grade) of G 18 NiMoCr 3-7

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