Hardfacing Alloy
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Hardfacing Alloy >> Co 190
Co190, is a highly abrasion-resistant alloy, primarily used for the hardfacing of bearing journals in tricone rotary rock bits used in the Oil and Gas Industry. Tricone bits operate in hot and extremely abrasive downhole conditions. Due to the high proportion of carbides, which provide the abrasion resistance, care must be taken to minimize cooling stresses incurred during hardfacing and to avoid service conditions which involve severe
mechanical or thermal shock.
Metal working tools where a combination of metal-onmetal wear, thermal fatigue and hot corrosion resistanceare required, such as piercing points, forming tools, and extrusion dies. Also used for furnace hardware.
Product Details

Chemical composition:

Grade Chemical composition(%)
Co Cr C


Co 190 Bal 27 3.3 £¼3 Ni,Si,Mn,Mo
Physical Properties
Grade Density Melting Point
Co 190 8.66g/cm3 1200~1335¡ãC

Typical Characteristics:

Hardness Abrasion Resistance Deposit Layers Corrosion Resistance Machilityineab
HRC 52~60 Good Multiple Good Carbide Tools

Standard Sizes:

Diameter Diameter Diameter
1/8¡± (3.2mm) 5/32¡± (4.0mm) 3/16¡± (4.8mm)
Note that special sizes, or packing requirements are available on all requests.
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