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Description

France AFNOR NF EN 10090, 1.4748 Specialsteel Valve steels and alloys for internal combustion engines and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 1.4748
Category Class Grade Standard Country Application
Steel GradesSpecialsteel 1.4748 AFNOR France Valve steels and alloys for internal combustion engines

Chemical composition(mass fraction)(wt.%) of the 1.4748

C Si Mn P S Cr Ni Mo V
0.80 -0.90 ≤1.50 ≤1.50 ≤0.040 ≤0.030 16.50 -18.50 ≤ ≥ 2.00 -2.50 0.30 -0.60

Mechanical Properties of steel grade 1.4748

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)
156 (≥) 977 (≥) 14 34 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 433

Physical Properties of steel grade 1.4748

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
44 - -     0.14 -  
982 946 - 44.3 343   -  
331 - 43 23.2   323 433

Heat Treatment of steel grade 1.4748

Heat treated : 1936°C - 1976°C

Technological Curves of steel grade 1.4748

Cross Reference Table (Equivalent Grade) of 1.4748

Grade Standard Country Application
X85CrMoV18-2
X85CrMoV18-2

Relevant standard of 1.4748

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

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