Korea G2 carbide steel Description: Hardness: HRA86 Flexural strength: 3000 Applies to: silicon steel thrust mold, steel cut mold. G5 alloy steel Hardness: HRA84 Flexural strength: 2800 Usage: shock mode, screws model metal carbides, especially Ⅳ B, Ⅴ B, Ⅵ B melting point metal carbides are more than 3273K, which hafnium carbide, tantalum, respectively 4160K and 4150K, is currently known the highest melting point of the material. Most carbide is very hard, and their hardness greater than 1800kg · mm2 (micro hardness is hardness represents one of the methods used for carbide and hard compounds, microhardness 1800kg · mm2 Mohs an equivalent a hardness of diamond 9). Many carbides difficult to decompose under high temperature, antioxidant capacity than its component metal strong. In all carbides TiC best thermal stability is a very important metal carbide. However, in an oxidizing atmosphere, all the carbides are easily oxidized at high temperatures, can be said that this is a major weakness carbide.