Spring carbon and alloy steel bars. Specifications
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.72 | 0.80 | ||
| Si | 0.17 | 0.37 | ||
| Mn | 0.50 | 0.80 | ||
| P | - | 0.035 | ||
| S | - | 0.035 | ||
| Cr | - | 0.25 | ||
| Ni | - | 0.25 | ||
| Cu | - | 0.20 |
Spring carbon and alloy steel bars. Specifications
| 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) |
|---|---|---|---|---|---|---|
| 818 (≥) | 438 (≥) | 23 | 12 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 443 |
| 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 |
|---|---|---|---|---|---|---|---|
| 283 (≥) | 511 (≥) | 43 | 24 | 42 | 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 |
|||||
| 686 | 852 | 487 |
We can customize the production of 75 grade, contact us for the best solution.
–sales@specificsteel.com