Grade: GD650 density (g / cm): 14.0 Hardness (HRA): 90.0 Bending strength (N / mm): 3800 Particle size: fine performance and recommended use: motor silicon steel, EI silicon steel, cold-rolled steel piece stamping dies and pure material or copper lead frame material and a terminal speed stamping. The world has more than 50 countries produce carbide, total up to 27000 ~ 28000t-, main producing countries, the United States, Russia, Sweden, China, Germany, Japan, Britain, France, the world market is basically saturated carbide , the market competition is very fierce. China cemented carbide industry is beginning to take shape in the late 1950s, 1960s and 1970s China cemented carbide industry has been developing rapidly in the early 1990s China Carbide total production capacity of 6000t, carbide production of 5000t, second only to in Russia and the United States, the world No. 3. Carbide sintering the powder is pressed into the blank, and then into the sintering furnace heated to a certain temperature (sintering temperature), and maintain a certain period of time (holding time), and then cooled down to obtain the desired properties of carbide materials.