High chromium cast iron is the abbreviation of high chromium white wear-resistant cast iron, which is a kind of wear-resistant material with excellent performance and has been paid special attention to. It has much higher wear resistance than alloy steel, much higher toughness and strength than ordinary white cast iron, good high temperature resistance and corrosion resistance, convenient production and moderate cost, and is regarded as one of the best abrasive wear-resistant materials in the contemporary era. High chromium cast iron is an important branch of wear-resistant metal materials and wear-resistant cast iron. It is the third generation white cast iron developed after ordinary white cast iron and nickel hard cast iron. As early as 19 17, the first patent of high chromium cast iron appeared. High chromium cast iron generally refers to alloy white cast iron with Cr content of 1 1-30% and C content of 2.0-3.6%. Widely used in mining, cement, electric power, road construction machinery and refractories, etc., it often produces wear-resistant parts such as linings, hammers and grinding balls.
China's national standard for wear-resistant white cast iron (GB/T8263) stipulates the brand, composition, hardness, heat treatment process and application characteristics of high chromium white cast iron.