N680
N680 (X54CrMoNV18-1)
(0.54% Carbon (C), 17.3% Chromium (Cr), 1.1% Molybdenum (Mo), 0.1% Vanadium (V), 0.4% Manganese (Mn), 0.45% Silicon (Si), 0.2% Nitrogen (N)) Very corrosion resistant steel with decent toughness and edge retention. Rockwell hardness up to 58 HRc Austria / Bohler Uddeholm