牌號(hào) | 化學(xué)成分(質(zhì)量分?jǐn)?shù))(%) | ||||||||
? | C | Mn | Si | Cr | Mo | Ni | Nb+Ta | S | P |
15crmoe | 0.12~0.18 | 0.40~0.70 | 0.17~0.37 | 0.80~1.10 | 0.40~0.55 | ≤0.30 | _ | ≤0.035 | ≤0.035 |
牌號(hào) | 拉力強(qiáng)度MPa | 屈服點(diǎn)MPa | 伸長(zhǎng)率(%) |
15crmoe | 440~640 | 235 | 21 |