Estimated mechanical properties and machinability of steel bars
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.22 | ||
| Si | - | 0.40 | ||
| Mn | - | 0.75 | ||
| P | - | - | ||
| S | - | - | ||
| Ni | - | 0.75 | ||
| Cr | - | 12.50 | ||
| Al | - | - | ||
| Cu | - | - | ||
| Ti | - | - | ||
| Fe | - | remaining | ||
| N | - | - | ||
| Mo | - | 1.00 | ||
| W | - | 1.00 | ||
| V | - | 0.22 |
Estimated mechanical properties and machinability of 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) |
|---|---|---|---|---|---|---|
| 178 (≥) | 494 (≥) | 41 | 23 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 143 |
| 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 |
|---|---|---|---|---|---|---|---|
| 516 (≥) | 474 (≥) | 42 | 44 | 22 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 412 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 424 | 775 | 444 |
We can customize the production of 4422 grade, contact us for the best solution.
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