Heat - resisting steel bars
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.25 | 0.35 | ||
| Si | - | 1.00 | ||
| Mn | - | 1.20 | ||
| P | 0.18 | 0.25 | ||
| S | - | 0.030 | ||
| Cr | 19.00 | 21.00 | ||
| Ni | 10.00 | 12.00 | ||
| Mo | 1.80 | 2.50 | ||
| N | - | - | ||
| B | 0.001 | 0.010 |
Heat - resisting steel bars
| 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) |
|---|---|---|---|---|---|---|
| 128 (≥) | 134 (≥) | 32 | 44 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 414 |
| 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 |
|---|---|---|---|---|---|---|---|
| 738 (≥) | 772 (≥) | 11 | 32 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 242 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 416 | 548 | 825 |
We can customize the production of STR38 grade, contact us for the best solution.
–sales@specificsteel.com