Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.12 | ||
| Si | - | 1.00 | ||
| Mn | - | 2.00 | ||
| P | - | 0.060 | ||
| S | 0.15 | 0.35 | ||
| Cr | 17.00 | 19.00 | ||
| Mo | - | 0.70 | ||
| Ni | 8.00 | 10.00 |
Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications
| 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) |
|---|---|---|---|---|---|---|
| 792 (≥) | 298 (≥) | 13 | 41 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 423 |
| 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 |
|---|---|---|---|---|---|---|---|
| 578 (≥) | 581 (≥) | 24 | 23 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 333 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 925 | 682 | 422 |
We can customize the production of 303S22 grade, contact us for the best solution.
–sales@specificsteel.com