440F Se Stainless Steel – Free-Machining Stainless with Excellent Surface Finish

Introduction to 440F Se Stainless Steel

440F Se Stainless Steel is a free-machining version of 440 stainless steel, enhanced by the addition of selenium for improved machinability and surface finish. This grade offers a unique balance of hardness and ease of machining, making it ideal for high-precision parts. It is commonly used in applications such as medical instruments, valves, and fasteners, where a smooth finish and tight tolerances are essential.

Machinability and Surface Finish

440F Se Stainless Steel is known for its excellent machinability, achieved by adding selenium to the alloy. This addition provides a finer surface finish compared to standard 440F, making 440F Se ideal for precision applications requiring smooth surfaces. The alloy is well-suited for high-volume production and complex parts, where ease of machining and consistent finish are priorities.

Strength, Hardness, and Moderate Corrosion Resistance

440F Se retains good hardness and strength after heat treatment, making it suitable for components that require both durability and machinability. While its corrosion resistance is slightly lower than 440C due to the addition of selenium, it performs well in mild environments and applications where corrosion resistance is a secondary consideration to machinability.

Differences Between 440 Grades

440F Se differs from 440C and standard 440F primarily due to the addition of selenium, which improves machinability and surface finish over both. Unlike 440C, which is designed for maximum hardness and wear resistance, 440F Se is tailored for ease of machining in precision applications. It is also generally easier to machine than standard 440F and produces a finer finish, making it suitable for applications requiring high accuracy and a polished surface.

Applications of 440F Se Stainless Steel

440F Se Stainless Steel’s free-machining qualities and fine surface finish make it ideal for a variety of applications:

• Medical Instruments: Used in precision surgical tools and dental instruments that require high machinability and a smooth finish.
• Valves and Fittings: Ideal for high-precision parts requiring both strength and machinability.
• Fasteners: Commonly used in fasteners where tight tolerances and a polished finish are needed.
• Automotive Components: Suitable for parts like shafts and fittings that require high machining accuracy.
• Industrial Tools: Excellent for manufacturing precision tools, taps, and dies.

Buy 440F Se Stainless Steel From M. Vincent

At M. Vincent, we supply 440F Se Stainless Steel in round bar to meet the demands of industries like medical, automotive, and tooling. We offer competitive pricing, quick delivery, and expert support to ensure you receive the best materials for your project. Contact us today for more information or to request a quote.

Chemical Data, Mechanical Properties and Specifications for 440F SE Stainless Steel