... Standard: ASTM, ASME, AMS, DIN, ISO, JIS Designation:Grade 1- Grade 4, Grade 5, Grade 7, Grade 9, Grade 11 Chemical composition ElementComposition,% Gr1Gr2Gr3Gr4Gr5Gr6Gr7Gr9Gr11Gr12N max0.030.030 ... 3.5 V 3.5-4.5 2.0-3.0 Titanium ingot description: (1). Cp grade 1 can be used ... the commercially pure titanium (3). Cp grade 3 is almost used in pressure,vessel. (4). Cp grade 4 can be used in some fittings ...