hat’s the context in which I will compare and contrast the two, for most tungsten carbide compounds are used in the machine tool industry for cutting other kinds of metal. Uncoated tungsten carbide is usually the benchmark by which other carbide inserts are compared. So if you have a coated type carbide insert you are able to run higher rpm’s and faster surface feet per minute on the materials you’re machining and you get greater edge breakdown resistance and longer tool life, generally speaking. The most common coating for carbide inserts is titanium nitride coating the gold colored finish also known as TiN. There are many other types of coatings to extend the life of the tool and increase production rates.