... Standard: ASTM, ASME, AMS, DIN, ISO, JIS Designation:Grade 1- Grade 4, Grade 5, Grade 7, Grade 9, Grade ... 5 2.0-3.0 Titanium ingot description: (1). Cp grade 1 can be used in the drawing parts for its good ... almost used in pressure,vessel. (4). Cp grade 4 can be used in some fittings parts and fastening pieces, but ... . (8). Alloy grade 23, ELI(extra low interstitial),can be used in the medical appliance.