Non-alloy quality steel
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.18 | 0.23 | ||
| Si | - | 0.4 | ||
| Mn | 0.3 | 0.9 | ||
| Ni | - | 0.3 | ||
| P | - | 0.025 | ||
| S | - | 0.015 | ||
| Cr | - | 0.3 | ||
| Ti | - | 0.03 | ||
| N | 0.03 | 0.07 | ||
| Nb | - | 0.010 | ||
| Al | 0.0015 | 0.05 | ||
| V | - | 0.02 | ||
| other | - | Cr+Cu+Mo+Ni < 0.7 |
P250GH
| 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) |
|---|---|---|---|---|---|---|
| 741 (≥) | 323 (≥) | 31 | 31 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 314 |
| 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 |
|---|---|---|---|---|---|---|---|
| 377 (≥) | 492 (≥) | 33 | 44 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 134 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 433 | 221 | 643 |
We can customize the production of P250GH grade, contact us for the best solution.
–sales@specificsteel.com