Chemical compositions of SAE wrought stainless steels
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.03 | ||
| Si | - | 0.75 | ||
| Mn | 7.50 | 9.00 | ||
| P | - | 0.045 | ||
| S | - | 0.03 | ||
| Cr | 17.5 | 22.0 | ||
| Ni | 5.00 | 7.00 | ||
| Mo | 2.00 | 3.00 | ||
| N | 0.25 | 0.50 |
XM-18
| Proof strength Rp0.2 (MPa) |
Tensile strength Rm (MPa) |
Impact energy KV (J) |
Elongation at fracture A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 198 (≥) | 446 (≥) | 31 | 32 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 131 |
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
Modulus of elasticity kN/mm2 |
Expansion rate |
|---|---|---|---|---|---|---|---|
| 367 (≥) | 168 (≥) | 21 | 33 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 443 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 545 | 476 | 758 |
We can customize the production of XM-18 grade, contact us for the best solution.
–sales@specificsteel.com