... and various acidic medium such as sulfuric acid, hydrofluoric acid, hydrochloric acid, phosphoric acid, an organic acid, alkaline medium, salt nickel base ... 5 ≤ 0.30 ≤ 0.5 ≤ 0.024The Monel Grade Ni Fe C Si Mn Cu OthersMonel400 Ni68Cu28Fe ≥ 63. ... , various acidic medium such as sulfuric acid, hydrofluoric acid, hydrochloric acid, phosphoric acid, an organic acid, alkaline medium, the salt and the ...