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France AFNOR AIR 9160 C, 25CD4S Specialsteel AIR 9160 25CD4S and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 25CD4S
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel 25CD4S Austenite AFNOR France AIR 9160 25CD4S

Chemical composition(mass fraction)(wt.%) of the 25CD4S

C Si Mn P S Cr Mo Ni
0.22 -0.29 0.10 -0.25 0.50 -0.80 ≤0.020 ≤0.015 0.90 -1.20 0.15 -0.25 ≤0.30

Mechanical Properties of steel grade 25CD4S

Rp0.2 (MPa)
Rm (MPa)
KV/Ku (J)
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
592 (≥) 956 (≥) 43 24 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

Physical Properties of steel grade 25CD4S

Modulus of elasticity
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
Specific thermal capacity
Specific electrical resistivity
(Ω mm²/m)
Poisson’s coefficient, ν
41 - -     0.12 -  
846 552 - 23.3 414   -  
628 - 11 33.2   443 441

Heat Treatment of steel grade 25CD4S

Heat treated : 1521°C - 1329°C

Technological Curves of steel grade 25CD4S

Relevant standard of 25CD4S

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