Specification for steel forgings for pressure purposes
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.04 | 0.10 | ||
| Si | - | 1.00 | ||
| Mn | - | 2.00 | ||
| P | - | 0.045 | ||
| S | - | 0.025 | ||
| Cr | 17.00 | 19.00 | ||
| Mo | - | - | ||
| Ni | 9.00 | 12.00 | ||
| Ti | - | 0.80 |
Specification for steel forgings for pressure purposes
| 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) |
|---|---|---|---|---|---|---|
| 957 (≥) | 632 (≥) | 41 | 31 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 224 |
| 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 |
|---|---|---|---|---|---|---|---|
| 112 (≥) | 917 (≥) | 31 | 33 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 114 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 323 | 923 | 424 |
We can customize the production of 321S51 510 grade, contact us for the best solution.
–sales@specificsteel.com