Attributes . ?0.03% Carbon (C)(4), 20.0 - 20.5% Chromium (Cr), 9.7 - 9.9% Nickel (Ni), ?0.20% Molybdenum (Mo), 0.6 - 0.7% Manganese (Mn), 0.56 - 0.77% Silicon (Si), ?0.03% Phosphorus (P), ?0.02% Sulfur (S), ?0.22% Copper (Cu) . Names