Heat - resisting steel bars
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.35 | 0.45 | ||
| Si | 1.80 | 2.50 | ||
| Mn | - | 0.60 | ||
| P | - | 0.03 | ||
| S | - | 0.03 | ||
| Cr | 10.00 | 12.00 | ||
| Ni | - | 0.60 | ||
| Mo | 0.70 | 1.30 | ||
| N | - | - | ||
| Cu | - | 0.30 |
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) |
|---|---|---|---|---|---|---|
| 696 (≥) | 222 (≥) | 14 | 12 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 411 |
| 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 |
|---|---|---|---|---|---|---|---|
| 497 (≥) | 391 (≥) | 34 | 34 | 43 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 121 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 853 | 948 | 757 |
We can customize the production of STR3 grade, contact us for the best solution.
–sales@specificsteel.com