France AFNOR NF A 35-579, Z53CMNNb21-09-02Az 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 | Z53CMNNb21-09-02Az | AFNOR | France | Valve steels and alloys for internal combustion engines |
| C | Si | Mn | P | S | Cr | Ni | Mo | Nb | N |
|---|---|---|---|---|---|---|---|---|---|
| 0.48 -0.58 | ≤0.25 | 8.00 -10.00 | ≤0.040 | ≤0.030 | 20.00 -22.00 | 3.25 -4.50 | ≤ ≥ | 1.70 -2.30 | 0.38 -0.55 |
| 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) |
|---|---|---|---|---|---|---|
| 689 (≥) | 399 (≥) | 34 | 12 | 23 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 143 |
| 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 |
|---|---|---|---|---|---|---|---|
| 22 | - | - | 0.32 | - | |||
| 664 | 561 | - | 11.3 | 142 | - | ||
| 659 | - | 11 | 31.2 | 432 | 423 |
Heat treated : 1365°C - 1312°C
| Grade | Standard | Country | Application |
|---|---|---|---|
| Z53CMNNb21-09-02Az |
| NF A 35-579 | Valve steels and alloys for internal combustion engines | NF-A-35-579.pdf |
Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...
Rfq.: sales@longhaisteel.com