... of 2003 . Properties and applications of cemented carbide special parts. GradeDensityT.R.SHardnessPerformance & application recommendedApprox Grades in Chinag ... YG6, used for processing hard wood, original wood, aluminum section bar, brass rod and cast iron. YG6AYM814.7232089 ... .5Suitable for fabricatig of machine parts, tools and wear parts, such as nozzles, centers,guiding devices, ...