... , aerospace, military ,petrochemical engineering ,metallurgy, electroplating, vacuuming metalling, sports and so onChemical requirements (ASTM F67-06)elementComposition,%(mass/mass)GR1GR2GR4GR4Nitrogen ... 180.250.350.40Titaniumbalancebalancebalancebalance Mechanical requirementsannealed-bar, billet, forgings, and oher formsgradeTensile strengthminYield strength,0.2%Offset, minElongation in 4D ...