酸洗則是一種后續(xù)工序,用來(lái)提高表面質(zhì)量的
化學(xué)成分及力學(xué)性能
牌號(hào) 化學(xué)成分% 屈服點(diǎn)Mpa 抗拉強(qiáng)度Mpa 伸長(zhǎng)率% 硬度HPB 彎曲試驗(yàn)
C Si Mn P S
SPCC ≤0.12 ≤0.05 ≤0.05 ≤0.035 ≤0.035 - ≥270 ≥20 -
SPCD ≤0.10 ≤0.03 ≤0.45 ≤0.030 ≤0.035 - ≥270 ≥28 -
SPCE ≤0.08 ≤0.03 ≤0.40 ≤0.025 ≤0.030 - ≥270 ≥35 -
SPCC1B ≤0.12 ≤0.05 ≤0.05 ≤0.035 ≤0.035 - - - 85
SPCC4B 0.08-0.13 ≤0.05 0.35-0.65 ≤0.035 ≤0.035 - - - 65-80