Titanium Ingots 2. Description:(1) grade 1 can be used in the drawing parts for its good elongation and excellent corrosion-resistance.(2) grade 2 is used most widely in the commercially pure titanium.(3) grade 3 is almost used in pressure vessel.(4) grade 4 can be used in some fittings parts and fastening pieces, but for complex shape need 300 degree Celsius to form.(5) Alloy Gr.5 (Ti-6AL-4V) widely used in the titanium alloys because of its comprehensive mechanical, physical and chemical properties.(6) Alloy Gr.7 adds little palladium in cp titanium and it has the most excellent corrosion-resistance, of course it costs higher.(7) Alloy Gr.9 (Ti-3AL-2.5V) is the most widely used in the golf clubs and bicycle girders.(8) Alloy Gr.23,ELI (entra low interstitial) can be used in the medical appliance.