牌號 | ATI Steel ATI 441 HP? |
廠家 | Allegheny Technologies Incorporated |
分類 | Steel |
介紹 | ATI 441 HP? alloy is a heat resisting ferritic grade that provides good oxidation and corrosion resistance for applications like automotive exhaust system components. Ferritic steels are not inherently strong at elevated temperatures, but columbium additions coupled with appropriate solution annealing markedly improve long-time creep rupture strength properties. ATI 441 HP alloy is dual stabilized with columbium and titanium to provide good weld ductility and resistance to intergranular corrosion in the weld heat affected zone. ATI 441 HP alloy has been developed for the severe tube bending and forming operations typical in automotive exhaust manifold fabrication. Tight control on carbon and nitrogen levels plus improved mill processing result in enhanced formability in terms of higher tube bending speeds and lower breakage or scrap rate. |
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