The high manganese steel fixed jaw plate of the jaw crusher is made of special alloy high manganese steel material, which usually contains a high proportion of manganese (Mn) and other alloy elements such as silicon (Si), chromium (Cr), nickel (Ni), copper (Cu), molybdenum (Mo), etc., to improve its wear resistance and impact resistance, while ensuring that the steel has good plasticity and crack resistance. The increase in manganese content not only increases the hardness of the steel but also makes it self-hardening. During the crushing process, as the crushing operation proceeds, a hardened layer is continuously generated on the surface, thereby effectively improving the wear resistance. The addition of chromium and molybdenum enhances the corrosion resistance and oxidation resistance of the steel, and nickel improves the toughness of the steel, making it less likely to break when subjected to severe impact.This alloy high manganese steel design enables the fixed jaw plate to exhibit good wear resistance in high-intensity crushing work and is particularly suitable for crushing various materials with higher hardness in industries such as mining, metallurgy, and building materials.