What is tungsten cobalt alloy?

       

Tungsten-cobalt cemented carbide (YG-type cemented carbide) refers to an alloy composed of tungsten carbide as a hard phase and metal cobalt as a binder phase. There are many brands of this type on the market. We often see xx products are YG6, YG8, YG20 and other models. Among them, Y is the first letter of hard pinyin, and G is the first letter of cobalt, so the tungsten alloy is referred to as YG, and the following number represents the percentage of the average cobalt content. This content is mainly based on your application. of. What is the difference between them?

In terms of performance, YG-type cemented carbide combines the advantages of tungsten carbide and cobalt, mainly reflected in high hardness, good thermal conductivity, good impact toughness, high flexural strength and excellent cutting resistance. The physical indicators of different grades of YG-type cemented carbide are different. For example, the density of YG6 is 14.6~15.0g/cm3, the hardness is 89.5HRA, the flexural strength is 1400MPa, the impact toughness is 2.6J/cm2, and the coercive force is 9.6~12.8 KA/m, compressive strength 4600MPa; YG8 density is 14.5~14.9g/cm3, hardness 89HRA, flexural strength 1500MPa, impact toughness 2.5J/cm2, coercivity 11.2~12.8KA/m, compressive strength 4600MPa. In general, under certain conditions, as the cobalt content increases, the flexural strength, compressive strength and toughness of the alloy are better, while the density and hardness are lower. Therefore, YG8 and YG20 will have better bending strength, compression resistance and impact toughness than YG6.