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发明公开
CN104480409A 一种06Cr17Ni12Mo2Ti奥氏体不锈钢管及生产工艺 有权 质押

一种06Cr17Ni12Mo2Ti奥氏体不锈钢管及生产工艺
摘要：
本发明公开了一种06Cr17Ni12Mo2Ti奥氏体不锈钢管，其化学成分及质量百分比为：C：0.021-0.023%，Si：0.62-0.64%，Mn：1.88-1.90%，Cr：17.1-17.3%，Ni：11.9-12.1%，Mo：2.43-2.45%，Cu：0.7-0.9%，Al：0.22-0.24%，N：0.07-0.09%，Ca：0.11-0.13%，Se：0.055-0.057%，Te：0.016-0.018%，Ti：0.13-0.7%，S：0.013-0.015%，P：0.008-0.010%，稀土元素：0.15-0.17%，其余为Fe及不可避免杂质；稀土元素包括：15-17%的铕、9-11%的钐、25-27%的镨、12-14%的钕、5-7%的钐，其余为镧；本发明还提供了一种06Cr17Ni12Mo2Ti奥氏体不锈钢管的生产工艺；本发明产品具有稳定的奥氏体组织，无磁性而且具有高韧性和塑性，具有良好的易切削性，耐氧化性酸介质以及硫酸、磷酸以及甲酸、醋酸、尿素等的腐蚀，且同时耐晶间腐蚀，具有全面的和良好的综合性能。
摘要（英）：

The invention discloses a 06Cr17Ni12Mo2Ti austenitic stainless steel pipe comprising the following chemical components in percentage by mass: 0.021-0.023% of C, 0.62-0.64% of Si, 1.88-1.90% of Mn, 17.1-17.3% of Cr, 11.9-12.1% of Ni, 2.43-2.45% of Mo, 0.7-0.9% of Cu, 0.22-0.24% of Al, 0.07-0.09% of N, 0.11-0.13% of Ca, 0.055-0.057% of Se, 0.016-0.018% of Te, 0.13-0.7% of Ti, 0.013-0.015% of S, 0.008-0.010% of P, 0.15-0.17% of rare-earth elements, and the balance of Fe and inevitable impurities, wherein the rare-earth elements comprise 15-17% of europium, 9-11% of samarium, 25-27% of praseodymium, 12-14% of neodymium, 5-7% of samarium and the balance of lanthanum. The invention also provides a production process of the 06Cr17Ni12Mo2Ti austenitic stainless steel pipe. The 06Cr17Ni12Mo2Ti austenitic stainless steel pipe disclosed by the invention has a stable austenitic structure, does not have magnesium, has high toughness and plasticity, good free-cutting machinability, oxidizing acid medium resistance, sulfuric acid corrosion resistance, phosphoric acid corrosion resistance, formic acid corrosion resistance, acetic acid corrosion resistance, urea corrosion resistance and the like, is resistant to inter-crystalline corrosion at the same time, and has overall and good comprehensive properties.

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