Hastelloy C-276 Alloys Chemical Composition is C -0.010 max ,Mn - 1.00 max,Si- 0.08 max, S-0.03 max, Co- 2.50 max, Ni-50.99 min, Cr-14.50 - 16.50, Fe- 4.00 - 7.00, Mo- 15.00 - 17.00, P- 0.04 max. Benefits of Hastelloy C-276 Alloys Hastelloy C-276 Alloy has excellent resistance to a wide variety of chemical process environments, including: Strong oxidizers (such as ferric and cupric chlorides) Hot contaminated media (organic and inorganic) Chlorine Formic and acetic acids Acetic anhydride