(57) @ An austenitic nickel-iron-chromium alloy exhibiting high-strength, good corrosion
resistance and having a low work hardening rate. The economic alloy is particularly
useful for tubes and industrial vessels and, more particularly, heat exchangers and
chemical and petrochemical equipment. The alloy includes e.g. 24 to 32% nickel, about
12 to 19% chromium, about 1 to 3.5 % molybdenum, about 2 to 5.5 % copper, up to about
2.5 % titanium, up to about 1.5% manganese, up to about 0.1 % cerium, and the balance
mostly iron. Depending on the quantity of titanium, both age hardenable and non-age
hardenable versions may be produced.
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