France AFNOR NF EN 10090, 1.4748 Specialsteel Valve steels and alloys for internal combustion engines and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Class | Grade | Standard | Country | Application |
---|---|---|---|---|---|
Steel Grades | Specialsteel | 1.4748 | AFNOR | France | Valve steels and alloys for internal combustion engines |
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 |
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 |
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 treated : 1936°C - 1976°C
Grade | Standard | Country | Application |
---|---|---|---|
X85CrMoV18-2 | |||
X85CrMoV18-2 |
NF EN 10090 | Valve steels and alloys for internal combustion engines | NF-EN-10090.pdf |
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