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Description

France AFNOR NF EN 10090, 1.4875 Specialsteel Valve steels and alloys for internal combustion engines and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 1.4875
Category Class Grade Standard Country Application
Steel GradesSpecialsteel 1.4875 AFNOR France Valve steels and alloys for internal combustion engines

Chemical composition(mass fraction)(wt.%) of the 1.4875

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 1.4875

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)
313 (≥) 572 (≥) 32 11 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade 1.4875

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
24 - -     0.23 -  
579 594 - 22.3 444   -  
772 - 44 24.2   342 311

Heat Treatment of steel grade 1.4875

Heat treated : 1756°C - 1791°C

Technological Curves of steel grade 1.4875

Cross Reference Table (Equivalent Grade) of 1.4875

Grade Standard Country Application
X55CrMnNiN20-8
X55CrMnNiN20-8

Relevant standard of 1.4875

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

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