Ultimet

Ultimet is a cobalt based “high-performance alloy” produced by Haynes International, Inc. It is a highly corrosion-, gall-, and wear-resistant alloy.
Properties and Uses
The corrosion resistance of ultimet is similar to that exhibited by hastelloy. Ultimet performs similarly to Stellite in wear resistance.
Ultimet is composed of several alloying elements in the following proportions: 54% Cobalt (as balance), 26% Chromium, 9% Nickel, 5% Molybdenum, 3% Iron, 2%Tungsten, 0.8% Manganese, 0.3% Silicon 0.08% Nitrogen and 0.06% Carbon.
The primary function of ultimet alloys is that of effective survival of a moderately to severely corrosive, and/or erosion or wear prone environment where more common and less expensive iron- alloys would fail, including the such applications as nozzles, pumps, fan blades, fluid mixing and agitating equipment, dies (including those for extrusion) and valves.
Ultimet is also available in many different forms including plates, sheets, billets, bars, wires and covered electrodes.
Fabrication and Machining
Ultimet alloy can be machined, although this is made more challenging by the strength of the material and its tendency to work-harden rapidly. Carbide tipped tools are recommended. Ultimet can also be joined using a variety of fusion welding techniques; Gas tungsten arc welding and Gas metal arc welding are recommended.

Main Menu

See Also

Main Menu