France AFNOR 1.4718 Valve Internal Combustion Engines steel (NF-EN 1009-1998) and 1.4718 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Type | Steel Grade | Standard | Country | Application |
---|---|---|---|---|---|
Steel Grades | Valve Steel | 1.4718 | AFNOR | France | Valve Internal Combustion Engines steel (NF-EN 1009-1998) |
Z53CMNS21-09Az |
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Z55CMN20-08Az |
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Z60CMDVNb21-10Az |
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Z80CNS20-02 |
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Z85CDV18-02 |
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NC15Fe7TA |
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NC20TA |
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X45CrSi9-3 |
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X40CrSiMo10-2 |
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1.4731 |
C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Ni(%) |
---|---|---|---|---|---|---|
0.40-0.50 | 2.70-3.30 | Max 0.60 | Max 0.040 | Max 0.030 | 8.00-10.0 | Max 0.50 |
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) |
---|---|---|---|---|---|---|
539 (≥) | 785 (≥) | 34 | 12 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 342 |
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 |
---|---|---|---|---|---|---|---|
43 | - | - | 0.12 | - | |||
257 | 438 | - | 11.3 | 232 | - | ||
745 | - | 12 | 42.2 | 132 | 242 |
Heat treated : 1732°C - 1695°C
Grade | Standard | Country | Application |
---|---|---|---|
1.4718 | DIN | Germany | Valve steel |
1.4718 | AFNOR | France | Valve Internal Combustion Engines steel (NF-EN 1009-1998) |
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