Titanium Grade 1 Round Wire, Ti Gr1 Wire by Oldman 30Feet Titanium Grade 1 is the softest, unalloyed grade of titanium with the lowest strength and highest ductility. It’s weldable, cold formability and an impact-resistant alloy. Titanium Grade 1 has good resistance to mildly reducing conditions and very good resistance to strong oxidizing environment with or without chlorides.