Cobalt-based alloy is a hard alloy that can withstand various types of wear, corrosion and high temperature oxidation. Cobalt-based alloys are based on cobalt as the main component, containing a considerable amount of nickel, alloying chemical elements such as chromium, tungsten and a small amount of alloying elements such as molybdenum, niobium, tantalum, titanium, lanthanum, and occasionally iron. According to the different composition of the alloy, the cobalt-based alloy can be made into welding wire, and the powder can be used for hard-surface welding, thermal spraying, spray welding and other processes, and it can also be made into castings, forgings and powder metallurgy parts. Classified by the end usage, cobalt-based alloys can be divided into cobalt-based wear-resistant alloys, cobalt-based high-temperature alloys and cobalt-based solution corrosion-resistant alloys. In general operating conditions, they are both wear-resistant and high-temperature resistant or wear-resistant and corrosion-resistant. Some operating conditions may also require high temperature, wear and corrosion resistance at the same time. The more complex the working conditions, the more obvious the advantages of cobalt-based alloys.
The Common Grades of Cobalt-based Alloys We Can Cast Are:
- 1) 2.4778 (according to DIN EN 10295)
- 2) Hayness 188, Haynes 25 (L-605),
- 3) Alloy S-816, UMCo-50, MP-159, FSX-414, X-40,
- 4) Stellite 6B, Grade 31, etc. ,
- 5) Chinese brands are: GH5188 (GH188), GH159, GH605, K640, DZ40M and so on.
