Abstract: A highly corrosion resistant, durable, strong, hardenable and relatively inexpensive nickel based alloy containing chromium and a high iron content has improved castability and weldability. The alloy contains approximately the quantities indicated: nickel 33 to 53 (to balance to 100 percent), chromium 20 to 25 percent, molybdenum 6 to 9 percent, cobalt 4 to 8 percent, iron 15 to 20 percent, manganese 2 to 4 percent, copper less then about 0.15 percent, carbon up to 0.2 percent and silicon 0.5 to 1.0 percent. The alloy is air meltable and produces a highly fluid castable melt. All percentages are by weight.

Abstract: A highly corrosion resistant, durable, strong, hardenable and relatively inexpensive nickel based, high chromium, high iron, austenitic alloy has greatly improved malleability and hot workability. The alloy contains approximately the quantities indicated:Ni--30-48% (preferably to 38%, to balance to 100%)Cr--30-35%Co--4-7.5%Fe--3-25% (but preferably 10-25%)Mn--1-3.5%Cu--2.5-8%C--to 0.25%And has a content of Mo from about 0 to 3%, a content of Si from about 0.3% and wherein the sum of the Mo and Si content is less than about 4%. Boron may be added to increase the workability and forging properties of the alloy. The preferred content of approximately 3% Si and approximately 1% molybdenum results in an optimum balance of the age hardenable workability, and corrosion resistant properties. All percentages are by weight.