1.4449 Alloy Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Type | Steel Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Alloy Steel | 1.4449 | |||
| X3CrNiMo 18-12-3 | |||||
| 1.4024 | |||||
| 1.4057 | |||||
| 1.4558 | |||||
| 1.4918 | |||||
| 1.4912 | |||||
| 1.4940 | |||||
| 1.4959 | |||||
| 1.4982 | |||||
| 1.4950 | 
| C | Si ≤ | Mn ≤ | P ≤ | S ≤ | Cr | Ni | Mo | Other | 
|---|---|---|---|---|---|---|---|---|
| ≤0.05 | 1.00 | 2.00 | 0.045 | 0.015 | 17.0-18.2 | 11.5-12.5 | 2.25-2.75 | Cu  ≤  1.00 N ≤ 0.08 | 
| 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) | 
|---|---|---|---|---|---|---|
| 651 (≥) | 324 (≥) | 22 | 14 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 144 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 21 | - | - | 0.43 | - | |||
| 886 | 238 | - | 44.3 | 233 | - | ||
| 826 | - | 13 | 34.2 | 232 | 234 | 
Heat treated : 1366°C - 1656°C
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