037X Alloys Brazing Sheet High Strength Alloy PRODUCT DESCRIPTION Alcoa has developed a set of proprietary high strength brazing sheet core alloys. These alloys display an excellent combination of strength, brazability, formability, and corrosion resistance. The Alcoa 037X family of alloys exploit an increased volume fraction of Al12(Fe,Mn)3Si dispersoids to achieve the higher post-braze mechanical properties. Versions with more magnesium such as alloy 0373 can age harden for further strengthening after brazing. These alloys have deliberate titanium additions for enhanced corrosion resistance. PRODUCT CHEMISTRIES White 91 SPECIFICATIONS Alloy Si Fe Cu Mn Mg Zn Ti* 0370 0.6 - 0.84 0.4 -PRODUCT 0.6 0.4 - .64 AVAILABILITY 1.1 – 1.4 0.05 max 0.05 max 0.10 - 0.20 0373 0.6 - 0.84 0.4 - 0.6 0.4 - .64 1.1 – 1.4 0.3 - 0.4 0.05 max 0.10 - 0.20 PRODUCT AVAILABILITY PHYSICAL PROPERTIES Controlled additions of silicon and copper give the 037X family a significant post-braze mechanical property advantage over conventional core alloys. With the addition of magnesium, the 037X family becomes age hardenable. The alloy strengthens significantly in service, depending on time and operating temperature. See chart to the left. ALCOA MILL PRODUCTS 1480 Manheim Pike Lancaster, PA 17601 Ph: 800-233-0481 Ext:1243 www.brazingsheet.com v2.01 Verseci u. 1-15. POB. H-8000 Szekesfehervar, Hungary Ph: 0036-22-53-1446 AMP#194R-C 10/01 No. 111, Yanhu Road, Huaqiao Economic Development Zone, Kunshan City, Jiangsu Province, P.R. China, 215332 Ph: 0086-512-5769-8817