MY ACCOUNT ONLINE CHAT CLEARANCE Alloys Forms Processing Quality Approvals Technical Resources Alloy 20 Alloy 20 was designed specifically to withstand sulfuric acid. Its nickel, chromium, molybdenum and copper levels all provide excellent general corrosion resistance. Restricted carbon plus columbium stabilization permits welded fabrications to be used in corrosive environments, normally without post-weld heat treatment. At 33% nickel, Alloy 20 has practical immunity to chloride stress corrosion cracking. This alloy is often chosen to solve SCC problems, which may occur with 316L stainless. Inventory Alloy 20 Plate, Alloy 20 Sheet, Alloy 20 Weld Wire Common Trade Names Carpenter® 20, 20CB-3® Specifications ASME SA 240, ASME SB 366, ASME SB 463, ASTM A 240, ASTM B 366, ASTM B 463, ASTM B 473, EN 2.4660, UNS N08020, Werkstoff 2.4660 Features Excellent resistance to hot sulfuric acid Resistant to intergranular corrosion in the as-welded condition Chloride stress corrosion cracking resistance Applications Sulfuric acid pickling tanks, racks and heating coils Phosphate coating drums and racks Heat exchangers Bubble caps Process piping Mixing tanks Chemical and petroleum process equipment Related Literature Data Sheet Fabrication Information Alloy 20 vs AL-6XN/904L Zeron 100 vs Alloy 20 OUR COMPANY About Us FAQs Markets Careers & Internships Packaging Safety Contact LOCATIONS North America Asia Europe TOOLS & MEDIA E-Service Programs Videos Weld Wire Selection Pipe Size Chart Machining Information Current Promotions RA Mobile FOLLOW US INSTAGRAM LINKEDIN FACEBOOK YOUTUBE PAYMENT METHOD BY United States P.O. Terms Terms & Conditions Privacy Policy © Rolled Alloys, Inc. All Rights Reserved