时间：2013-11-20 10:03　作者：admin　点击： 次

Cast steel can be divided into carbon steel and alloy steel according to the chemical composition. In the alloy steel, it is divided into low alloy steel, medium alloy steel and high alloy steel according to the number of alloy elements.The total mass fraction of alloying elements in low alloy steel is less than 5%; the total mass fraction of alloying elements in medium alloy steel is 5% to 10%; the total mass fraction of alloying elements in high alloy steel is greater than 10%.According to the purpose of cast steel, it can be classified into carbon structural steel, carbon tool steel, alloy structural steel, alloy tool steel, stainless steel, heat-resistant steel and some special purpose steels.These steels are generally rolled into various steels, and only a part of them is used in casting production.As casting materials, there are mainly cast carbon steel, cast low alloy steel and cast high alloy steel.Among them, high-strength steel and high-chromium steel cannot be processed by rolling or forging due to their own performance characteristics, so they can only be used as casting materials.