1)density of Titanium Bolts: 4.51 g/cm3 2)type: Gr1, Gr2, Gr5 3) ... 4)High-grade material 5)Corrosion resist M8 *50mm Titanium Bolts 1. Certificate: ISO 9001, ASTM 2. Chemical requirements NCHFeOAlVPaMoNiTiGr 10 ... NameTitanium BoltsMaterialPure Titanium and Alloy TitaniumGradeGr1,Gr2,Gr3,Gr4,Gr5(Ti-6AL-4V),Gr7,Gr9,Gr12, etc.StandardGB,DIN, IFI,UNC ...