Metrode description: Lean duplex stainless steels (LDSS) provide cost savings compared to 22%Cr duplex stainless steels because of the reductions in Ni and Mo. The LDSS also provide a strength advantage compared to austenitic stainless steels and generally have comparable corrosion resistance to austenitic stainless steels. The LDSS are finding more widespread use in today’s economic climate, particularly in structural applications. Uses include: bridges and structural work generally replacing austenitic stainless steels and carbon steels rather than replacing standard duplex alloys.