牌号 | 化学成分(%) | |||||||
c | si | mn | p | s | cu | ni | cr | |
10 | 0.07~0.14 | 0.17~0.37 | 0.35~0.65 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | ≤0.15 |
20 | 0.17~0.24 | 0.17~0.37 | 0.35~0.65 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | ≤0.25 |
35 | 0.32~0.40 | 0.17~0.37 | 0.50~0.80 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | ≤0.25 |
45 | 0.42~0.50 | 0.17~0.37 | 0.50~0.80 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | ≤0.25 |
q345 | 0.12~0.20 | 0.20~0.55 | 1.20~1.60 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | ≤0.25 |
牌号 | 抗拉强度(mpa) | 屈服强度(mpa) | 伸长率(%) |
10 | ≥335 | ≥205 | ≥24 |
20 | ≥390 | ≥245 | ≥20 |
35 | ≥510 | ≥305 | ≥17 |
45 | ≥590 | ≥335 | ≥14 |
q345 | ≥490 | ≥325 | ≥21 |