USA UNS SAE J 405 (1998) , XM-18 Specialsteel Chemical compositions of SAE wrought stainless steels and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application | 
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | XM-18 | Austenite | UNS | USA | Chemical compositions of SAE wrought stainless steels | 
| C | Si | Mn | P | S | Cr | Ni | Mo | N | 
|---|---|---|---|---|---|---|---|---|
| ≤0.03 | ≤0.75 | 7.50 -9.00 | ≤0.045 | ≤0.03 | 17.5 -22.0 | 5.00 -7.00 | 2.00 -3.00 | 0.25 -0.50 | 
| 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) | 
|---|---|---|---|---|---|---|
| 182 (≥) | 942 (≥) | 11 | 14 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 223 | 
| 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 | - | - | 0.44 | - | |||
| 722 | 971 | - | 13.3 | 341 | - | ||
| 668 | - | 43 | 11.2 | 112 | 441 | 
Heat treated : 1226°C - 1184°C
| SAE J 405 (1998) | Chemical compositions of SAE wrought stainless steels | SAE-J-405--(1998)-.pdf | 
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