Tungsten Carbide Coating Hardness

Tungsten carbide is a chemical carbide containing equal parts of tungsten and carbon atoms.

Tungsten carbide coating hardness.

In the case of tungsten carbide coatings hrc equivalents are very hit and miss and meaningless. Containing 88 tungsten carbide as a hard material and a cobalt matrix that functions as a binder material for the car bide particles. Tungsten carbide s hardness level is comparable with corundum and can only be polished and finished with abrasives of superior hardness such as cubic boron nitride and diamond powder wheels and compounds. Hardness of hvof tungsten carbide coatings is greater than 70 rc rock well scale compared with typical values of 60 to 70 rc for hard chrome plating.

As said by luigi it seems 91 seems to be a realistic value for hr15n rockwell superficial scale but not hrc. Postalloy ps 98 with a hardness of up to 60 rc prevents this from happening. Microhardness values for the tungsten carbide coating are on the order of 1050 dph 300 diamond pyramid hardness compared with values of 750 to 850 dph that are typ ical of hard chrome plate. Hardness varies but all cemented carbides are harder than the hardest metals.

Tungsten carbide with a vickers number of 1700 2400 85 hrc equivalent is composed of 90 carbide particles by weight 80 by volume. How can tungsten carbide coatings strengthen aircraft parts. Widely used in fields such as machinery metallurgy petroleum and aerospace for their corrosion resistance high temperature resistance abrasion resistance and hardness are today s tungsten carbide coatings for applications used in industries throughout the world in general protective coatings are formed by these hard alloy. It is comparable with corundum α al 2 o.

Wc co cr coating properties structure and applications. Tungsten carbide is approximately twice as stiff as steel with a young s modulus of approximately 530 700 gpa 77 000 to 102 000 ksi and is double the density of steel nearly midway between that of lead and gold. This cermet composite coating combines the ductility of the metallic material with the high hardness of the ceramic tungsten carbide which results in the excellent properties associated with this coating. If you are considering increasing hardness you need to be cautious.

Wc 10co 4cr tungsten carbide cobalt chrome thermal spray powder for hvaf spraying carbide coatings. All products are agglomerated and sintered powders coatings of these materials are harder compared to coatings of 83wc 17co as a result of higher tungsten carbide levels.