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发明公开
CN103540871A 一种低碳高Cr高N强耐腐蚀性用钢及其生产方法 有权

一种低碳高Cr高N强耐腐蚀性用钢及其生产方法
摘要：
本发明公开了一种低碳高Cr高N强耐腐蚀性用钢及其生产方法，属于耐腐蚀用钢生产技术领域。钢的化学成分及质量百分比为：C：0.01%-0.08%、Si：0.1%-0.5%、Mn：0.5%-1.0%、P：≤0.02%、S：≤0.01%、Cr：6.0%-13.0%、N：0.02%-0.05%，余量为Fe及不可避免杂质。采用采用转炉冶炼-精炼-连铸-加热-控轧-控冷工艺生产生产的低碳高Cr高N耐腐蚀用钢，具有优异的耐氯离子腐蚀和耐工业大气腐蚀性能，耐腐蚀性能与Q235碳钢相比，为碳钢的3-5倍。适用于海洋环境、沼泽地等恶劣条件下要求超高强、耐久性设计要求的混凝土结构使用。
摘要（英）：

The invention discloses a low-carbon high-chromium high-nitrogen high-corrosion resistance steel and a production method thereof and belongs to the technical field of corrosion-resistant steel production. The steel comprises the following chemical components in percentage by mass: 0.01-0.08% of C, 0.1-0.5% of Si, 0.5-1.0% of Mn, less than or equal to 0.02% of P, less than or equal to 0.01% of S, 6.0-13.0% of Cr, 0.02-0.05% of N and the balance of Fe and unavoidable impurities. The low-carbon high-chromium high-nitrogen corrosion-resistant steel obtained through the production processes of converter smelting, refining, continuous casting, heating, controlled rolling and controlled cooling has excellent chlorine ion erosion resistance and industrial atmosphere corrosion resistance and the corrosion resistance of the steel is 3-5 times that of a Q235 carbon steel, so that the steel is suitable for concrete structures with ultrahigh strength and durability design requirements under bad conditions of sea environment, marsh lands and the like.

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