Stainless steel duplex stainless steels are achieved with an overall lower alloy content than similar-performing super-austenitic grades, making their use cost-effective for many applications. Duplex grades are characterized into groups based on their alloy content and corrosion resistance. Precipitation hardening stainless steels have corrosion resistance comparable to austenitic varieties, but can be precipitation hardened to even higher strengths than the other martensitic grades. The most common, 17-4PH, uses about 17% chromium and 4% nickel. The designation "CRES" is used in various industries to refer to corrosion-resistant steel. Most mentions of CRES refer to stainless steel, although the correspondence is not absolute, because
Olympic Steel Olympic Steel Olympic Steel, Inc. is a steel processor based in Cleveland, Ohio. The company processes and distributes processed carbon, coated and stainless flat-rolled sheet, and coil and plate steel products primarily in the United States. The company owns 17 facilities throughout the eastern-half of the United States and 1 in Mexico. Its services include cutting-to-length, slitting, and shearing. It also offers value-added processes such as blanking, tempering, plate burning, precision machining, welding, and fabricating and painting to process steel to specified lengths, widths, and shapes. It also owns two subsidiaries, Chicago Tube and Iron and Integrity Stainless. Olympic Steel