International ISO ISO 683-15 (1992), X55CrMnNiN20-8 Specialsteel Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Class | Grade | Type | Standard | Country | Application |
---|---|---|---|---|---|---|
Steel Grades | Specialsteel | X55CrMnNiN20-8 | Austenite | ISO | International | Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines |
C | Si | Mn | P | S | Cr | Mo | Ni | N |
---|---|---|---|---|---|---|---|---|
0.50 -0.60 | ≤0.25 | 7.00 -10.00 | ≤0.050 | ≤0.030 | 19.50 -21.50 | ≤ ≥ | 1.50 -2.75 | 0.20 -0.40 |
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) |
---|---|---|---|---|---|---|
584 (≥) | 541 (≥) | 21 | 24 | 12 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 312 |
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 | - | - | 0.14 | - | |||
559 | 674 | - | 42.3 | 432 | - | ||
958 | - | 21 | 44.2 | 423 | 121 |
Heat treated : 1429°C - 1823°C
Grade | Standard | Country | Application |
---|---|---|---|
X55CrMnNiN20-8 | |||
X55CrMnNiN20-8 |
ISO 683-15 (1992) | Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines | ISO-683-15-(1992).pdf |
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