The chemical fiber cutting knife is a key component of the water flow cutting machine, which affects the quality of fiber cutting and the production cost of the enterprise. The cutting knives currently on the market are mainly divided into Stellite alloy knives and imitation Stellite alloy knives. The methods are different. Stellite alloy knives have stable quality and relatively high service life, but are expensive. The quality of imitation Stellite alloy knives is uneven and the service life is relatively low. The heat resistance, wear resistance, corrosion resistance and strength required by the material; after repeated tests, experimental corrections and continuous improvement, an alloy material suitable for the production environment of cutting knives was finally developed. The newly developed alloy material has heat resistance , high strength, corrosion resistance, wear resistance and other comprehensive properties, the chemical fiber knife produced by this material not only has a long service life and moderate price, it can greatly save production costs for chemical fiber production enterprises.