不锈钢可分为哪几类？ www.tool-tool.com

Bewise Inc. www.tool-tool.com Reference source from the internet.

不锈钢按其成分，可分为以铬为主的铬不锈钢和以铬、镍为主的铬镍不锈钢两大类。

工业上常用的不锈钢一般按金相组织分类，可分为以下五大类：

1) 马氏体不锈钢：含铬量12%～18%，含碳量0.1%～0.5%(有时达1%)，常见的有1Cr13、2Cr13、3Cr13、4Cr13、1Cr17Ni2、9Cr18、9Cr18MoV、30Cr13Mo等。

2) 铁素体不锈钢：含铬量12%～30%，常见的有0Cr13、0Cr17Ti、0Cr13Si4NbRE、1Cr17、1Cr17Ti、1Cr17M02Ti、1Cr25Ti、1Cr28等。

3) 奥氏体不锈钢：含络量12%～25%，含镍量7%～20%(或20%以上)，最典型的代表是1Cr18Ni9Ti，常见的还有00Cr18Ni10、 00Cr18Ni14Mo2Cu2、0Cr18Ni12Mo2Ti、0Cr18Ni18Mo2Cu2Ti、0Cr23Ni28M03Cu3Ti、 1Cr14Mn14Ni、2Cr13Mn9Ni4、1Cr18Mn8Ni5N等。

4) 奥氏体+铁素体不锈钢：与奥氏体不锈钢相似，仅在组织中含有一定量的铁素体，常见的有0Cr21Ni5Ti、1Cr21Ni5Ti、 1Cr18Mn10Ni5M03N、0Cr17Mn13Mo2N、1Cr17Mn9Ni3M03Cu2N、Cr2bNi17M03CuSiN、 1Cr18Ni11Si4AlTi等。

5) 沉淀硬化不锈钢：含有较高的铬、镍和很低的碳，常见的有0Cr17Ni4Cu4Nb、0Cr17Ni7Al、0Cr15Ni7M02Al等。
前两类为铬不锈钢，后三类为铬镍不锈钢。

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