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440F Stainless Steel

Strong, corrosion-resistant, and machinable - 440f stainless steel

Durability and versatility combined - 440f stainless steel

Find out why it's the go-to choice for industries ranging from aerospace to medical.

When equated to other free machining grades, this alloy is particularly beneficial in situations that call for machined parts with higher hardness values than other grades

With superior qualities like high hardness, non-galling, non-seizing and more, 440F stainless steel is the material of choice for many industries. If you’re looking for this kind of material, look no further than O’Hare Precision Metals. We offer unsurpassed quality!

O'Hare 440F Alloy

Machinability & Welding

440f stainless steel is known for its excellent machinability, making it easy to cut, drill, and shape into various forms. This type of steel has high carbon content, which increases its hardness and strength but can also cause difficulties during machining. However, with the right tools and techniques, it can be machined efficiently.

Weldability is a measure of a metal’s ability to form a strong and reliable bond with other materials through welding. It has moderate weldability, meaning it can be welded with certain precautions. To ensure the best results, welding should be performed at a temperature of around 200-300°C, and the use of low carbon welding electrodes is recommended. Proper preheating and post-weld heat treatment can also help to prevent cracking and improve the strength of the welded joint.

Overall, the machinability and weldability of this steel make it a versatile and popular choice in various industries. However, it is important to take the necessary precautions and use the appropriate techniques when machining and welding this type of steel to ensure the best results.


440f alloy steel has numerous applications across various industries. It is commonly used to manufacture industrial components such as valves, bearings, and pumps. The high corrosion resistance and durability of 440f stainless steel make it a popular choice in marine applications, where it is used for parts that come into contact with saltwater.

The aerospace industry also relies on this stainless steel to produce critical components such as engine parts, landing gear, and hydraulic systems. Its ability to withstand high temperatures and pressures makes it an ideal material for aircraft manufacturing.

It is also frequently used in the medical industry for surgical tools and implants due to its biocompatibility, corrosion resistance, and ability to withstand sterilization. Additionally, it is used in food processing equipment and cutlery due to its excellent hygiene properties.

In the construction industry, It is helpful in manufacture fittings, fasteners, and fixtures. Its durability, corrosion resistance, and strength are ideal for building structures requiring high-stress resistance.

Overall, the versatility and durability of this steel make it a popular choice in various industries, from marine and aerospace to medical and construction.



Specific Gravity 

Specific Heat 

Melting Point 

Modulus of Elasticity Tension 

0.275 lb/in³


(Btu/lb/Deg F – [32-212 Deg F])0.11

2700 Deg F


Chemical Properties



















0.1 – 0.35




O’Hare’s 440f Stainless Steel

There are numerous advantages to purchasing 440f stainless steel that many individuals are curious about. This type of steel has been utilized by various industries, including the military, for several years due to its corrosion resistance, ability to withstand high temperatures, and durability under pressure. It is a versatile steel that can be used in various applications.

O’Hare Precision Metals specializes in stainless steel and provides competitive prices and fast shipping on their products. They offer a broad selection of stainless steel products, such as bars, sheets, rods, tubes, and more. Additionally, they provide custom cut-to-size materials and worldwide shipping.

O’Hare Precision Metals is a top-notch producer of stainless steel and provides a range of services, such as custom cut sheets and rolled products. They have built a reputation for providing high-quality products throughout their many years in the industry. With a diverse clientele spread all over the world, they are a leading provider of stainless steel.

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