Standards: AIR 9160 C XC18S,

Category Class Grade Standard Country Application
Steel GradesSpecialsteel XC18S AFNOR France AIR 9160 Gr.XC18S
Datasheet for:Steel Grades:Specialsteel:XC18S

Chemical composition(mass fraction)(wt.%) of the XC18S

Elements Min.(≥) Max.(≤)
C 0.15 0.22
Si - 0.25
Mn 0.40 0.65
P - 0.035
S - 0.035

Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade XC18S

Rp0.2 (MPa)
Rm (MPa)
KV/Ku (J)
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
882 (≥) 628 (≥) 12 31 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 331
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
32 - -     0.24 -  
914 923 - 44.3 121   -  
319 - 44 34.2   411 324
Heat treated : 1266°C - 1329°C
The material does not have direct Metallography properties.
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
40CDV20 AFNOR France
AIR 9160 C 40CDV20
XC18S AFNOR France
AIR 9160 Gr.XC18S
Relevant standard
Standard No. Description Download
AIR 9160 C
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AIR 9160 C, XC18S can be supplied as steel plate/ sheet, round steel bar, steel tube/pipe, steel stripe, steel billet, steel ingot, steel wire rods. electroslag, forged ring/ block,etc.
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