通用阀门材料 金属材料耐腐蚀性的10级标准
耐蚀等级 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
腐蚀率,mm/a | <0.001 | 0.001~0.005 | 0.005~0.01 | 0.01~0.05 | 0.05~0.1 | 0.1~0.5 | 0.5~1.0 | 1.0~5.0 | 5.0~10.0 | >10 |
耐蚀性类别 | 完全耐蚀 | 很耐蚀 | 耐蚀 | 尚耐蚀 | 欠耐蚀 | 不耐蚀 |
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