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30 CrNiMo 8

Italy UNI 30CrNiMo8 淬火和回火钢 - 第1部分:一般交货技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 30CrNiMo8 / 30 CrNiMo 8
Category Grade Standard Region/Area Standard Content
Metals 30 CrNiMo 8 UNI EN 10083-1 Italy 淬火和回火钢 - 第1部分:一般交货技术条件

Chemical composition(mass fraction)(wt.%) of the 30 CrNiMo 8

Element Min Max Similar
Si - 0.4000 -
S - 0.0350 -
P - 0.0250 -
Ni 1.8000 2.2000 -
Mo 0.3000 0.5000 -
Mn 0.5000 0.8000 -
Cr 1.8000 2.2000 -
C 0.2600 0.3400 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Ni 1.8000 2.2000 -
Mo 0.3000 0.5000 -
Mn 0.3000 0.6000 -
Cr 1.8000 2.2000 -
C 0.2600 0.3400 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Ni 1.8000 2.2000 -
Mo 0.3000 0.5000 -
Mn 0.3000 0.6000 -
Cr 1.8000 2.2000 -
C 0.2600 0.3400 -

Mechanical Properties of steel grade 30 CrNiMo 8

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)
135 (≥) 326 (≥) 14 31 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 334

Physical Properties of steel grade 30 CrNiMo 8

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
21 - -     0.24 -  
439 613 - 23.3 111   -  
144 - 41 41.2   344 422

Heat Treatment of steel grade 30 CrNiMo 8

Heat treated : 1631°C - 1394°C

Technological Curves of steel grade 30 CrNiMo 8

Cross Reference Table (Equivalent Grade) of 30 CrNiMo 8

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