Carbon structural steels
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.12 | ||
| Si | - | 0.3 | ||
| Mn | - | 0.5 | ||
| P | - | 0.035 | ||
| S | - | 0.04 | ||
| Cr | - | 0.3 | ||
| Ni | - | 0.3 | ||
| Cu | - | 0.3 | ||
| N | - | 0.0080 |
This standard applies to steel product standards, technical specifications of the finished product chemical composition of the provisions of the allowable deviation.
| 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) |
|---|---|---|---|---|---|---|
| 721 (≥) | 692 (≥) | 43 | 42 | 23 | 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 |
|---|---|---|---|---|---|---|---|
| 355 (≥) | 469 (≥) | 12 | 31 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 224 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 579 | 455 | 519 |
We can customize the production of Q195 grade, contact us for the best solution.
–sales@specificsteel.com