440C steel is a martensitic stainless steel. The carbon content is 1.0%, and the chromium content is 16-18%. It has strong rust resistance and is a high-quality stainless steel.

Scope of application: Mainly used to manufacture bearing parts that work in corrosive environments and non-lubricated strong oxidizing atmospheres. 440C has good high-temperature dimensional stability, so it can also be used as corrosion-resistant high-temperature bearing steel. In addition, it can also be used to manufacture high-quality knives, such as medical scalpels, scissors, nozzles, bearings, etc. 440C has a lower ability to withstand dynamic loads.

Mainly used for manufacturing bearing parts that work in corrosive environment and non-lubricated strong oxidizing atmosphere. 440C has good high-temperature dimensional stability, so it can also be used as corrosion-resistant high-temperature bearing steel. In addition, it can also be used to manufacture high-quality knives, such as medical scalpels, scissors, nozzles, bearings, etc. 440F: It is a steel grade that improves the easy-cutting performance of 440C steel. It is used in automatic lathes and ordinary alloy steels. It has the characteristics of hardening through quenching. Therefore, a wide range of different mechanical properties can be obtained by selecting grades and heat treatment conditions. 440C has a lower ability to withstand dynamic loads.

440: High-strength cutting tool steel with slightly higher carbon content. After proper heat treatment, higher yield strength can be obtained. The hardness can reach 58HRC, which is among the hardest stainless steels. The most common application example is the "razor blade". There are three commonly used models: 440A, 440B, 440C, and 440F (easy processing type).