General purpose hard alloy

Update:28 Mar 2019

General purpose cemented carbide is also known as unive […]

General purpose cemented carbide is also known as universal hard alloy. Its chemical composition is mainly tungsten carbide, titanium carbide, tantalum carbide or tantalum carbide and cobalt. The grades are indicated by the first letters and  of the  Chinese Pinyin. For example, YWl represents the first general purpose cemented carbide.

Since the alloy replaces part of the titanium carbide with tantalum carbide or tantalum carbide, the properties of the alloy are between the tungsten drill and the tungsten-cobalt-titanium hard alloy, and the titanium carbide is The more the substitution, the higher the bending strength of the alloy.

Therefore, it can be used to process brittle materials such as cast iron, as well as plastic materials such as steel, and can also be used to process hard-to-machine materials such as high-manganese steel, heat-resistant steel, stainless steel, and other high-alloy steels. The alloy is a tool material obtained by powder metallurgy using one or more carbides such as titanium carbide or tungsten carbide as the hard phase and alloy steel, tool steel, stainless steel, etc. as the binder.

It not only has high wear resistance, high red hardness, oxidation resistance and corrosion resistance of cemented carbide, but also has weldability, workability, heat treatability and malleability of steel. In steel-bonded cemented carbides, the types of binders are different, and their uses are also different. For example, YE65 is used to manufacture various shapes of complex tools such as twist drills, milling cutters, etc., and can also be used to manufacture at higher temperatures. Mold and wear parts.

silver tungsten