碳 素 结 构 钢 | H08 H08A H08E H08 Mn H08 MnA H15A H15 Mn | ≤0.10 ≤0.10 ≤0.10 ≤0.10 ≤0.10 0.11~0.18 0.11~0.18 | 0.30~0.55 0.30~0.55 0.30~0.55 0.80~1.10 0.80~1.10 0.35~0.65 0.80~1.10 | ≤0.03 ≤0.03 ≤0.03 ≤0.07 ≤0.07 ≤0.03 ≤0.07 | ≤0.20 ≤0.20 ≤0.20 ≤0.20 ≤0.20 ≤0.20 ≤0.20 | ≤0.30 ≤0.30 ≤0.30 ≤0.30 ≤0.30 ≤0.30 ≤0.30 | — — — — — — — | — — — — — — — | — — — — — — — | 0.040 0.030 0.025 0.040 0.030 0.030 0.040 | 0.040 0.030 0.025 0.040 0.030 0.030 0.040 | 用于碳素钢的 电弧焊、气焊、 埋弧焊、电渣 焊和气体保护
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