Heavy mechanical general techniques and standards-Part 15:Non-destructive inspection of forged steel
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.07 | 0.14 | ||
| Si | 0.17 | 0.37 | ||
| Mn | 0.30 | 0.60 | ||
| P | - | 0.012 | ||
| S | - | 0.01 | ||
| Cr | 0.90 | 1.20 | ||
| Ni | 2.60 | 3.00 | ||
| Mo | 0.20 | 0.27 | ||
| Cu | - | 0.1 | ||
| V | 0.04 | 0.10 | ||
| H | - | 2PPM | ||
| O | - | 20PPM | ||
| N | - | 70PPM |
Heavy mechanical general techniques and standards-Part 15:Non-destructive inspection of forged steel
| 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) |
|---|---|---|---|---|---|---|
| 483 (≥) | 793 (≥) | 21 | 44 | 23 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 442 |
| 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 |
|---|---|---|---|---|---|---|---|
| 418 (≥) | 731 (≥) | 24 | 44 | 41 | 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 |
|||||
| 226 | 259 | 624 |
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