腐蚀率小于0.1mm/年,质量不锈钢属于这类材料;第二类腐蚀率仍为腐蚀性,其腐蚀率为0.1-1.0mm/year,属于普通不锈钢。第三类是非耐腐蚀性,其腐蚀率为每年。分析和腐蚀率为9.67mm/year,这是一种严重的腐蚀。不锈钢重要指标的铬含量仅为10.03%和7.1%。
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