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X55CrMnNiN20-8

Description

France AFNOR NF EN 10090, X55CrMnNiN20-8 Specialsteel Valve steels and alloys for internal combustion engines and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: X55CrMnNiN20-8
Category Class Grade Standard Country Application
Steel GradesSpecialsteel X55CrMnNiN20-8 AFNOR France Valve steels and alloys for internal combustion engines

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

C Si Mn P S Cr Ni Mo N
0.50 -0.60 ≤0.25 7.00 -10.00 ≤0.035 ≤0.030 19.50 -21.50 1.50 -2.75 ≤ ≥ 0.20 -0.40

Mechanical Properties of steel 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)
328 (≥) 116 (≥) 32 13 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 214

Physical Properties of steel grade X55CrMnNiN20-8

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
32 - -     0.12 -  
185 235 - 14.3 342   -  
565 - 24 14.2   421 313

Heat Treatment of steel grade X55CrMnNiN20-8

Heat treated : 1871°C - 1743°C

Technological Curves of steel grade X55CrMnNiN20-8

Cross Reference Table (Equivalent Grade) of X55CrMnNiN20-8

Grade Standard Country Application
X55CrMnNiN20-8
X55CrMnNiN20-8

Relevant standard of X55CrMnNiN20-8

NF EN 10090 Valve steels and alloys for internal combustion engines NF-EN-10090.pdf

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