Attributes . 67.0% Nickel (Ni), 0.10% Carbon (C), 2.5 - 3.5% Manganese (Mn), 3.0% Iron (Fe), 0.015% Sulphur (S), 0.50% Silicon (Si), 18.0 - 22.0% Chromium (Cr), 0.75% Titanium (Ti), 0.03% Phosphorus (P), 2.0 - 3.0% Columbium (Cb) + Tantalum (Ta), 0.50% Copper (Cu), 0.50% OET . Names