Bearing Steel
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.85 | 0.95 | ||
| Si | 0.20 | 0.60 | ||
| Mn | 0.15 | 0.45 | ||
| P | - | 0.030 | ||
| S | - | 0.030 | ||
| Cr | 3.50 | 4.30 | ||
| Mo | 4.00 | 4.90 | ||
| V | 1.65 | 2.25 | ||
| W | 0.75 | 1.50 | ||
| Co | - | - |
Bearing 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) |
|---|---|---|---|---|---|---|
| 735 (≥) | 771 (≥) | 32 | 33 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 331 |
| 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 |
|---|---|---|---|---|---|---|---|
| 237 (≥) | 537 (≥) | 14 | 24 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 311 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 947 | 428 | 629 |
We can customize the production of M52 grade, contact us for the best solution.
–sales@specificsteel.com