904L (N08904, 14539) tšepe e ntle ea aus tiins e na le "14.0-18.0% Chromium, 4,0-26.0% NICKEL, 4,5% Molybdenum. Letlapa le phahameng la 904l le nang le monko o se nang kelello, o phahameng, molybdenum. E na le bokhoni bo botle ba ho fetisa phetoho, khanyetso e ntle ea li-corrosion tsa acide ea li-acide tse kang sulfuric, hammoho le khatello ea maikutlo ea li-corronice. E loketse meaho e fapaneng ea sulfuric acid e ka tlase ho 70 ¡Ãc, e bile le khatello e ntle ea acid le acid acid ea foromo le acetic acid.