Q275 steel plate is a kind of carbon structural steel, high strength, good plasticity and cutting performance, good welding performance, small parts can be quenched and strengthened, mostly used to manufacture parts with high requirements, such as gears and shafts. , sprockets, keys, bolts, nuts, section steels for agricultural machinery, conveyor chains and links.
Chemical composition(mass fraction)(wt.%) of the Q275
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Ni(％) | Cu(%) |
|---|---|---|---|---|---|---|---|
| 0.28～0.38 | ≤0.35 | 0.50～0.80 | ≤0.045 | ≤0.050 | ≤0.30 | ≤0.30 | ≤0.30 |
Mechanical properties of grade Q275
| Yield Rp0.2 (MPa) | Tensile Rm (MPa) | Impact KV (J) | Elongation A (%) | Reduction in cross section on fracture Z (%) | As-Heat-Treated Condition | HBW |
|---|---|---|---|---|---|---|
| 949 (≥) | 917 (≥) | 14 | 22 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 322 |
Partial part type display:
