Ipsco Enterprises, Inc.

Ipsco Inc.

William D Bailey

James M Zimmer

An austenitic steel alloy has a composition of about 6 to 13 percent aluminum, 20 to 34 percent manganese, 0.2 to 1.4 percent carbon, 0.4 to 1.3 percent silicon, and the balance essentially iron. The relative quantities of the foregoing elements are selected from these ranges to produce a volume percent of ferrite structure in the alloy in the range of about 1 percent to about 8 percent. The volume percent of ferrite is determined by the empirical formula

Aluminum-manganese-iron steel alloy

An austenitic stainless steel alloy has a composition of about 6 to about 13 percent aluminum, about 7 to about 34 percent manganese, about 0.2 to about 2.4 percent carbon, 0.4 to about 1.3 percent silicon, about 0 to about 6 percent chromium, about 0.5 to about 6 percent nickel, and the balance essentially iron. The relative quantities of the foregoing elements are selected from these ranges to produce a volume percent of ferrite structure in the alloy in the range of about 1 percent to about 8 percent. The volume percent of ferrite is determined by the empirical formula ##EQU1##

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Regina, Canada

William D Bailey