France AFNOR NF A 35-579, Z40CSD10 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 | Z40CSD10 | AFNOR | France | Valve steels and alloys for internal combustion engines |
| C | Si | Mn | P | S | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|
| 0.35 -0.45 | 2.00 -3.00 | ≤0.80 | ≤0.040 | ≤0.030 | 9.50 -11.50 | ≤0.50 | 0.80 -1.30 |
| 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) |
|---|---|---|---|---|---|---|
| 667 (≥) | 599 (≥) | 21 | 32 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 213 |
| 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 |
|---|---|---|---|---|---|---|---|
| 13 | - | - | 0.23 | - | |||
| 282 | 479 | - | 31.3 | 421 | - | ||
| 762 | - | 31 | 32.2 | 431 | 211 |
Heat treated : 1286°C - 1851°C
| Grade | Standard | Country | Application |
|---|---|---|---|
| Z40CSD10 |
| NF A 35-579 | Valve steels and alloys for internal combustion engines | NF-A-35-579.pdf |
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