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ATI 2003® (UNS S32003) lean duplex stainless steel (LDSS) is a molybdenum-enhanced, proprietary* duplex stainless steel alloy. Cr, Ni, Mo, and N are controlled to give a phase balance similar to that of ATI 2205™ duplex stainless steel, while reducing costs.
The alloy fills a gap between Type 316 and the ATI 2205™ alloy in terms of corrosion resistance, while possessing the higher mechanical properties characteristic of a duplex stainless steel. ATI 2003® LDSS can be an economic alternative to Type 316L stainless steel, providing enhanced strength and corrosion resistance. *U.S. and foreign patents; other patents pending.
ASTM A240, ASME Code Case 2503
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