ST52焊管
产品描述
化学成分含量表:
| Grade | C | Si | Mn | P | S | Cr | Ni | Cu |
| St37.0 | ≤0.17 | 0.17-0.37 | 0.35-0.65 | ≤0.025 | ≤0.020 | ≤0.25 | ≤0.25 | ≤0.25 |
| St44.0 | ≤0.21 | 0.17-0.37 | 0.50-0.80 | ≤0.025 | ≤0.020 | ≤0.25 | ≤0.25 | ≤0.25 |
| St55 | 0.33-0.41 | 0.17-0.37 | 0.50-0.80 | ≤0.025 | ≤0.020 | ≤0.25 | ≤0.25 | ≤0.25 |
| St52.0 | ≤0.22 | ≤0.55 | ≤1.60 | ≤0.025 | ≤0.020 | ≤0.25 | ≤0.25 | ≤0.21 |
机械性能:
| Grade | Tensile strength
(MPa) |
Yield strength (Mpa)
not less than |
Elongation (%)
not less than |
|
| ≤16mm | >16mm | |||
| St37.0 | 350-480 | 235 | 225 | 25 |
| St44.0 | 420-550 | 275 | 265 | 21 |
| St55 | 540-645 | 295 | 285 | 17 |
| St52.0 | 500-650 | 355 | 345 | 21 |
付款方式︰ 电汇