X55CrMnNiN20-8

This page provides X55CrMnNiN20-8 datasheet, X55CrMnNiN20-8 mechanical properties, chemical element X55CrMnNiN20-8, technical specifications of X55CrMnNiN20-8 steel material properties. X55CrMnNiN20-8 performance specifications.

Category Type Steel Grade Standard Country Application
Steel GradesValve Steel X55CrMnNiN20-8 AFNOR France Valve Internal Combustion Engines steel (NF-EN 1009-1998)
NC15Fe7TA
NC20TA
X45CrSi9-3
X40CrSiMo10-2
1.4731
1.4718
X33CrNiMnN23-8
1.4866
X53CrMnNiN21-9
1.4871
Datasheet for:Steel Grades:Valve Steel:X55CrMnNiN20-8

Chemical composition(mass fraction)(wt.%) of the X55CrMnNiN20-8

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) N(%)
0.50-0.60 Max 0.25 7.00-10.00 Max 0.035 Max 0.030 19.5-21.5 1.50-2.75 0.20-0.40

Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade X55CrMnNiN20-8

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)
814 (≥) 951 (≥) 22 13 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 434
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
23 - -     0.31 -  
326 912 - 14.3 123   -  
266 - 23 34.2   221 413
Heat treated : 1953°C - 1819°C
Directory is being updated.
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
X55CrMnNiN20-8 DIN Germany
Valve steel
X55CrMnNiN20-8 AFNOR France
Valve Internal Combustion Engines steel (NF-EN 1009-1998)
ISO X55CrMnNiN20 8 ISO ISO
ISO standard valve austenite steel
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X55CrMnNiN20-8 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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