Refractory Alloys Columbium 1% Zirconium

Not applicable

Anneal at 1850 to 2200 F.

Typical applications are for thermal barriers, containers for liquid metals and nuclear applications. Structural properties are good to 3000 F. However in exposure to air a protective coating is needed at temperatures above 800 F.

The alloy may be cold worked with relative ease by conventional methods.

Forging may be done in the range of 1800 to 1200 F.

The alloy can be formed by standard methods without difficulty.

Hardens by cold working.

Not heat treatable. See "Annealing".

Hot working, such as extrusion, should be done at 1950 F.

This alloy is readily machined by conventional methods using high speed steel tooling.

This alloy of columbium (niobium) is 98.5% columbium with additions of zirconium and other elements in minor amounts. The common designation for the alloy is Cb-1Zr. Also called KBI-1

Not applicable.

Welding may be done using electron beam or gas tungsten-arc (GTAW) methods or resistance welding. There is a loss of ductility in the weld.