Specification for Steel Forgings, Austenitic, for Pressure and High Temperature Parts
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.04 | 0.10 | ||
| Si | - | 0.75 | ||
| Mn | - | 2.00 | ||
| P | - | 0.045 | ||
| S | - | 0.03 | ||
| Cr | 24.00 | 26.00 | ||
| Ni | 19.00 | 22.00 |
Specification for Steel Forgings, Austenitic, for Pressure and High Temperature Parts
| 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) |
|---|---|---|---|---|---|---|
| 388 (≥) | 616 (≥) | 43 | 32 | 23 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 123 |
| 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 |
|---|---|---|---|---|---|---|---|
| 964 (≥) | 278 (≥) | 14 | 14 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 344 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 941 | 325 | 321 |
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