... , AMS, DIN, ISO, JIS Designation:Grade 1- Grade 4, Grade 5, Grade 7, Grade 9, Grade 11 Chemical composition ElementComposition,% Gr1Gr2Gr3Gr4Gr5Gr6Gr7Gr9Gr11Gr12N ... .20.250.150.180.25Al 5.5-6.754.0-4.6 2.5-3.5 V 3.5-4.5 2.0-3.0 Titanium ... for complex shape need 300 degree celsius to form. (5). Alloy grade 5(Ti-6Al-4V) widely used in the titanium alloys ...