... : main raw material to make metal titanium, also used to make titanium steel. Titanium sponge1) TG-TV gradeSpec: Ti 97%min, Fe 2 ... 0.06%max, Si 0.02%max, Cl 0.06%, C 0.02%max, N 0.02%max, O 0.06%max Mn ... %max, Cl 0.08%, C 0.03%max, N 0.02%max, O 0.08%max Mn 0.01%max, Mg ... , N 0.03%max, O 0.10%max Mn 0.02%max, Mg 0.07%max, H 0.005%5) Grade ... , N 0.04%max, O 0.15%max Mn 0.02%max, Mg 0.08%max, H 0.010% 6) Grade ...