以下是常见不锈钢的化学成分含量表,综合多个权威来源整理而成:
一、主要牌号及成分
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304不锈钢(奥氏体)
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C: ≤0.07%
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Si: ≤1.00%
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Mn: ≤2.00%
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P: ≤0.035%
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S: ≤0.030%
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Ni: 8.00%-10.00%
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Cr: 16.00%-18.00%
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Mo: ≤0.20%
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其他:Al≤1.50%, Cu≤0.03%
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306不锈钢(奥氏体带钼)
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在304基础上加Mo:
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Cr: 16.00%-18.00%
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Mo: 2.00%-3.00%
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其他:Al≤1.50%, Cu≤0.03%
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316不锈钢(双相钢)
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C: ≤0.08%
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Si: ≤1.00%
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Mn: ≤2.00%
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P: ≤0.035%
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S: ≤0.030%
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Ni: 8.00%-10.00%
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Cr: 16.00%-18.00%
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Mo: 2.00%-3.00%
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其他:Al≤1.50%, Cu≤0.03%
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317不锈钢(镍铬系)
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C: ≤0.08%
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Si: ≤1.00%
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Mn: ≤2.00%
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P: ≤0.035%
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S: ≤0.030%
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Ni: 9.00%-13.00%
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Cr: 16.00%-18.00%
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Mo: ≤0.20%
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其他:Al≤1.50%, Cu≤0.03%
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201不锈钢(铬镍系)
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C: ≤0.15%
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Si: ≤1.00%
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Mn: 5.50%-7.50%
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P: ≤0.060%
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S: ≤0.030%
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Ni: 3.50%-5.50%
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Cr: 16.00%-18.00%
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其他:Al≤1.50%, Cu≤0.03%
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430不锈钢(镍系)
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C: ≤0.03%
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Si: ≤1.00%
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Mn: ≤1.00%
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P: ≤0.035%
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S: ≤0.030%
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Ni: 8.00%-10.00%
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Cr: 18.00%-20.00%
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其他:Al≤1.50%, Cu≤0.03%
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二、其他常见牌号
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202不锈钢 :与201类似,但Cr含量更高(18%-20%)
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302不锈钢 :含钼(0.03%-0.08%)
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303不锈钢 :含镍铬钼(Cr18Ni11Mo2)
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305不锈钢 :含镍铬(Cr18Ni10)
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310S不锈钢 :含镍铬硫(Cr18Ni10S0)
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321不锈钢 :含镍铬(Cr18Ni12)
三、关键元素作用
- 铬(Cr) :主要合金元素