France AFNOR NF A 35-579, Z45CS9 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 | Z45CS9 | AFNOR | France | Valve steels and alloys for internal combustion engines |
| C | Si | Mn | P | S | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|
| 0.40 -0.50 | 2.70 -3.30 | ≤0.80 | ≤0.040 | ≤0.030 | 8.00 -10.00 | ≤ ≥ | ≤ ≥ |
| 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) |
|---|---|---|---|---|---|---|
| 841 (≥) | 841 (≥) | 31 | 21 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 244 |
| 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 | - | - | 0.21 | - | |||
| 859 | 746 | - | 43.3 | 111 | - | ||
| 215 | - | 12 | 22.2 | 241 | 342 |
Heat treated : 1698°C - 1834°C
| Grade | Standard | Country | Application |
|---|---|---|---|
| Z45CS9 |
| NF A 35-579 | Valve steels and alloys for internal combustion engines | NF-A-35-579.pdf |
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