9cr18mo Stainless Steel Rod With High Hardness And Wear Resistance Is Used For Cutting Tools And Bearings

Introduction to 9cr18mo martensitic stainless steel:

440C steel is a martensitic stainless steel. It contains 1.0% carbon and 16-18% chromium. 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 low ability to withstand dynamic loads.

Features:

1. High hardness: 9Cr18Mo has a very high hardness, which can maintain the sharpness and durability of the blade. This makes it an ideal choice for manufacturing high-quality cutting tools.

2. Good corrosion resistance: Due to its high chromium content, 9Cr18Mo has excellent corrosion resistance and can be used for a long time in humid environments without rusting or corrosion.

3. High wear resistance: 9Cr18Mo has excellent wear resistance and can resist cutting and wear. This makes it an ideal material for manufacturing high-quality cutting tools and mechanical parts.

4. Machinability: 9Cr18Mo is easy to machine and cut, and can be formed and processed in various ways. This makes it widely used in the manufacturing industry.

5. High strength: 9Cr18Mo has high strength and excellent mechanical properties, and can withstand high pressure and heavy loads. This makes it an ideal choice for manufacturing high-quality mechanical parts.

440C stainless steel is a high carbon stainless steel with excellent properties. Its chemical composition mainly includes elements such as carbon, chromium, molybdenum, etc., as follows:

Carbon (C): The content is between 0.95% and 1.20%, which is the main source of high hardness and wear resistance of 440C stainless steel. The high carbon content enables 440C stainless steel to achieve a high level of hardness after appropriate heat treatment.

Chromium (Cr): with a content between 16.00% and 18.00%, it provides good corrosion resistance. Chromium can combine with oxygen to form a dense chromium oxide film, preventing further oxidation reactions and protecting steel from corrosion.

Molybdenum (Mo): content between 0.4% and 1.0% enhances the corrosion resistance of 440C stainless steel. The addition of molybdenum helps to improve the durability of stainless steel in various corrosive environments.

In addition, 440C stainless steel also contains other elements, such as:

Silicon (Si): The content is usually low, which helps maintain appropriate processing performance.
Manganese (Mn): Its content is also low, and its impact on mechanical properties is limited.

Phosphorus (P) and sulfur (S): The content is very low, ensuring the purity of the material.

Nickel (Ni): Although its content is low, it helps to improve corrosion resistance.
The specific content ratios of these elements make 440C stainless steel perform well in various applications, especially in environments that require high hardness, wear resistance, and corrosion resistance.