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.
| Cr | C | Si | Mn | S | P |
| 16.00~18.00 | 0.95~1.20 | ≤1.00 | ≤1.00 | ≤0.030 | ≤0.035 |
| Ni | | | | | |
| ≤0.60 | |
