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25 CrMo 4

EU EN 25CrMo4 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: 25CrMo4 / 25 CrMo 4
Category Grade Standard Region/Area Standard Content
Metals 25 CrMo 4 EN 10083-1 EU 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 25 CrMo 4

Element Min Max Similar
Mo 0.1500 0.3000 -
Cr 0.9000 1.2000 -
P - 0.0350 -
S - 0.0350 -
Mn 0.6000 0.9000 -
Si - 0.4000 -
C 0.2200 0.2900 -
Al - 0.0400 -
Mo 0.1500 0.3000 -
Cr 0.9000 1.2000 -
P - 0.0350 -
S - 0.0300 -
Mn 0.6000 0.9000 -
Si - 0.4000 -
C 0.2200 0.2900 -
Si 0.1000 0.3500 -
S - 0.0150 -
P - 0.0200 -
Ni - 0.3000 -
Mo 0.1500 0.2500 -
Mn 0.5000 0.8000 -
Cr 0.9000 1.2000 -
C 0.2200 0.2900 -
Si 0.1000 0.3500 -
S - 0.0150 -
P - 0.0200 -
Ni - 0.3000 -
Mo 0.1500 0.2500 -
Mn 0.5000 0.8000 -
Cr 0.9000 1.2000 -
C 0.2200 0.2900 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0250 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.2200 0.2900 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.2200 0.2900 -

Mechanical Properties of steel grade 25 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)
766 (≥) 492 (≥) 12 22 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 431

Physical Properties of steel grade 25 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
12 - -     0.22 -  
116 997 - 44.3 312   -  
534 - 21 41.2   414 243

Heat Treatment of steel grade 25 CrMo 4

Heat treated : 1716°C - 1755°C

Technological Curves of steel grade 25 CrMo 4

Cross Reference Table (Equivalent Grade) of 25 CrMo 4

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