440stainless steel plate Description

440 is a ferritic stainless steel with high C content and the highest hardness among all stainless steels. It is usually used for knives, and its corrosion resistance is worse than 304.

Ferritic stainless steel: It has properties similar to low carbon steel, but it also has better corrosion resistance due to the addition of about 11-17% chromium. Due to the low nickel content, ferritic stainless steels are relatively inexpensive in the stainless steel family and have good resistance to chloride corrosion. The weldability of ferritic stainless steels varies depending on the composition. Ferritic stainless steel strictly controls the content of martensite and limits the precipitated carbides in the heat-affected zone, thereby greatly improving the weldability of ferritic stainless steel. However, the impact toughness of welded HAZ decreases for almost all ferritic stainless steels due to the increased grain structure in the HAZ.

440stainless steel plate application

440C has good dimensional stability at high temperature, so it can also be used as corrosion resistant high temperature bearing steel. In addition, it can also be used to manufacture high-quality cutting tools, such as medical scalpels, scissors, nozzles, bearings and so on.

440F is a kind of steel that can improve the cutting performance of 440C steel. It is used for automatic lathes and ordinary alloy steel, which has the same characteristics of hardening through quenching. Therefore, a wide range of different mechanical properties can be obtained by selecting the brand and heat treatment conditions.

440stainless steel plate Classification

High strength cutting tool steel, slightly higher carbon content, after appropriate heat treatment can obtain high yield strength, hardness can reach 58HRC, belongs to the hardest stainless steel. The most common example is the "razor blade". There are three common models: 440A, 440B, 440C, and 440F (easy to process).，The carbon content and hardness of 440A-440B-440C are progressively increased from A-B-C (A-0.75%, B-0.9%, C-1.2%). 440C is an excellent high-end stainless steel with a hardness of 56-58RC. The rust resistance of these three kinds of steel is good, 440A is the best, and 440C is the lowest. The 440C is very common.

440stainless steel plate chemical composition

Chemical Composition (%) of 440C Stainless Steel Plate

440stainless steel plate mechanical property

Physical Properties of 440C Stainless Steel Plate

440stainless steel plate specification

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