Cobalt Alloy UmCO50 Bar/ Plate/ Ring / PIPE

Product Detail

Common Trade Names: UMCo-50 , Cobalt 50, CoCr28 ,W.Nr 2.4778

UMCo50  is Cobalt-based alloy  that can withstand various types of wear, corrosion and high temperature oxidation. It uses cobalt as the main component and contains a considerable amount of nickel, chromium, tungsten and a small amount of molybdenum, niobium, tantalum, Alloying elements such as titanium, lanthanum, and occasionally also contain iron is particularly suitable for applications that require not only oxidation resistance, but also a certain high temperature strength, but also thermal corrosion resistance, thermal shock resistance and wear resistance. In a sulfur-containing oxidizing atmosphere, it has very good thermal corrosion resistance to heavy oil or other fuel combustion product media, and is widely used in coal chemical nozzle nozzles. 

UmCo50 Chemical Composition









0.05 0.12

27.0 29.0

0.5 1.0

0.5  1.0




48.0 52.0

UmCo50 Physical Properties


Melting Point ℃



UMCo50 Available Products in Sekonic Metals

Inconel 718 bar,inconel 625 bar

UMCo50 Bars & Rods

Round bars/Flat bars/Hex bars, Size From 8.0mm-320mm, Used for bolts,fastners and other parts

welding wire and spring wire

UMCo50 Wire

Supply in welding wire and spring wire in coil form and cut length.

Sheet & Plate

UMCo50 sheet & plate

Widths up to 1500mm and lengths up to 6000mm,Thickness from 0.1mm  to 100mm.

UMCo50 seamless tube & Welded pipe

Standards size and  customized dimension can be produced by us with small tolerance


UMCo50 Slide Block & Pad

Co50 Slide block for step furnace, can produce as clients drawing

Nimonic 80A, iNCONEL 718, iNCONEL 625, incoloy 800

UMCo50 Gasket/ Ring

Dimension can be customized with bright surface and precision tolerance.

Why UMCo50 ?

Anti-corrosion in dilute sulfuric acid and boiling nitric acid, rapid corrosion in hydrochloric acid.

It has stronger oxidation resistance than 25Cr-20Ni in the air to 1200°C.

When sulfur-containing oil is used as fuel, it has high corrosion resistance in sulfur oxide environment.

Anti-corrosion of molten copper, but rapid corrosion of molten aluminum.

UMCo50 Application field:

• Petrochemical equipment residual oil vaporization furnace forging nozzles
• High temperature and high pressure valves
• Internal combustion engine exhaust valves
• Sealing surfaces
• High temperature molds
• Steam turbine blades
• Sealing surfaces,furnace parts Wait,chain saw guide plates, plasma spray welding

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