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发明公开
CN109355571A 铁素体耐热不锈钢及其制备方法 有权

铁素体耐热不锈钢及其制备方法
摘要：
本发明公开了一种铁素体耐热不锈钢及其制备方法。该铁素体耐热不锈钢包括按重量百分比计的如下化学成分：C：0.06～0.11％，Si：0.7～1.2％，Mn：0.6～1.0％，Cr：17.0～19.0％，Al：0.7～1.2％，N：0.005～0.015％，其余为Fe和不可避免杂质。本发明的铁素体耐热不锈钢及其制备方法通过加入Al和N，能够提高不锈钢的高温抗氧化性能，同时对C、Si、Mn、P、S和Cr的含量进行调整控制，能够生产出具有优异的抗高温氧化性能、冲击韧性、低膨胀系数和焊接性能的铁素体耐热不锈钢。
摘要（英）：

The invention discloses a ferrite heat-resistant stainless steel and a preparation method thereof. The ferrite heat-resistant stainless steel comprises, by weight, the following chemical components of0.06%-0.11% of C, 0.7%-1.2% of Si, 0.6%-1.0% of Mn, 17.0%-19.0% of Cr, 0.7%-1.2% of Al, 0.005%-0.015% of N and the balance Fe and inevitable impurities. According to the ferrite heat-resistant stainless steel and the preparation method thereof, through adding of the Al and N, the high temperature oxidation resistance of the stainless steel can be improved, and meanwhile the contents of the C, Si,Mn, P, S and Cr are regulated and controlled; the ferrite heat-resistant stainless steel, with the advantages of excellent high-temperature oxidation resistance, impact toughness, low expansion coefficient and welding performance, can be produced.

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