Alloy Steel Turbine-Type Bolting Material Specially Heat Treated for High-Temperature Service
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.01 | ||
| Si | - | 0.05 | ||
| Mn | - | 1.50 | ||
| P | - | 0.04 | ||
| S | - | 0.01 | ||
| Ni | - | remaining | ||
| Cr | 0.50 | 1.50 | ||
| Al | 0.10 | 0.50 | ||
| Cu | - | 0.50 | ||
| Ti | - | - | ||
| Fe | 1.00 | 6.00 | ||
| Mo | 26.00 | 30.00 | ||
| Co | - | 2.50 |
Alloy Steel Turbine-Type Bolting Material Specially Heat Treated for High-Temperature Service
| 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) |
|---|---|---|---|---|---|---|
| 572 (≥) | 662 (≥) | 24 | 22 | 22 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 134 |
| 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 |
|---|---|---|---|---|---|---|---|
| 913 (≥) | 492 (≥) | 33 | 11 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 322 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 734 | 725 | 835 |
We can customize the production of SA-437 Grade B4C grade, contact us for the best solution.
–sales@specificsteel.com