France AFNOR NF A 35-579, Z60CMDVNb21-10Az 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 | Z60CMDVNb21-10Az | AFNOR | France | Valve steels and alloys for internal combustion engines |
C | Si | Mn | P | S | Cr | Ni | Mo | Nb | V | N |
---|---|---|---|---|---|---|---|---|---|---|
0.57 -0.65 | ≤0.25 | 9.50 -11.50 | ≤0.040 | ≤0.030 | 20.00 -22.00 | ≤1.50 | 0.75 -1.25 | 1.00 -1.20 | 0.75 -1.00 | 0.40 -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) |
---|---|---|---|---|---|---|
661 (≥) | 825 (≥) | 34 | 41 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 123 |
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 | - | - | 0.11 | - | |||
552 | 634 | - | 24.3 | 141 | - | ||
765 | - | 14 | 44.2 | 441 | 413 |
Heat treated : 1144°C - 1787°C
Grade | Standard | Country | Application |
---|---|---|---|
Z60CMDVNb21-10Az |
NF A 35-579 | Valve steels and alloys for internal combustion engines | NF-A-35-579.pdf |
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