Specification for 12% chromium-nickel-molybdenum-vanadium heat-resisting steel bars for the manufacture of fasteners (1100-1300 MPa: limiting ruling section 50 mm)
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.08 | 0.13 | ||
| Si | - | 0.35 | ||
| Mn | 0.50 | 0.90 | ||
| P | - | 0.030 | ||
| S | - | 0.025 | ||
| Cr | 11.00 | 12.50 | ||
| Ni | 2.00 | 3.00 | ||
| Mo | 1.50 | 2.00 | ||
| Nb/Ti | - | - | ||
| V | 0.25 | 0.40 | ||
| N | 0.020 | 0.040 |
Specification for 12% chromium-nickel-molybdenum-vanadium heat-resisting steel bars for the manufacture of fasteners (1100-1300 MPa: limiting ruling section 50 mm)
| 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) |
|---|---|---|---|---|---|---|
| 169 (≥) | 617 (≥) | 12 | 32 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 311 |
| 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 |
|---|---|---|---|---|---|---|---|
| 577 (≥) | 291 (≥) | 31 | 32 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 342 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 268 | 481 | 241 |
We can customize the production of S.159 grade, contact us for the best solution.
–sales@specificsteel.com