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25 CrMoS 4

Germany DIN 25CrMoS4 Bright steel products - Technical delivery conditions - Part 5: Steels for quenching and tempering and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 25CrMoS4 / 25 CrMoS 4
Category Grade Standard Region/Area Standard Content
Metals 25 CrMoS 4 DIN EN 10277-5 Germany Bright steel products - Technical delivery conditions - Part 5: Steels for quenching and tempering

Chemical composition(mass fraction)(wt.%) of the 25 CrMoS 4

Element Min Max Similar
Si - 0.4000 -
S 0.0200 0.0400 -
P - 0.0350 -
Mo 0.0150 0.3000 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.2200 0.2900 -
Si - 0.4000 -
S 0.0200 0.0400 -
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 0.0200 0.0400 -
P - 0.0350 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.2200 0.2900 -
Si - 0.4000 -
S 0.0200 0.0400 -
P - 0.0350 -
Other - - -
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 CrMoS 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)
179 (≥) 744 (≥) 31 33 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 131

Physical Properties of steel grade 25 CrMoS 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 - -     0.32 -  
685 468 - 22.3 214   -  
687 - 34 31.2   114 223

Heat Treatment of steel grade 25 CrMoS 4

Heat treated : 1718°C - 1532°C

Technological Curves of steel grade 25 CrMoS 4

Cross Reference Table (Equivalent Grade) of 25 CrMoS 4

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