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420F Stainless Steel | Forte Metals

420f Stainless Steel

Meet the versatile and affordable 420F stainless steel

Introduction to 420F stainless steel

Machinability of 420F stainless steel

420F stainless steel is known for its excellent machinability, which is due to its high sulfur content. The sulfur acts as a lubricant, reducing friction and heat buildup during machining operations. This results in longer tool life, higher cutting speeds, and improved surface finish compared to other stainless steel alloys. 

However, the high sulfur content can also result in lower toughness and ductility, so care must be taken when performing machining operations on this material. Proper cutting speeds, feeds, and coolant usage can help optimize the machining process for 420F steel, resulting in efficient and cost-effective production.  

420F Steel Uses

420f Stainless Steel Properties

Physical Properties 

Tensile strength 

Yield strength 

Elastic modulus 

Poisson’s ratio 


95000 psi

55100 psi

27557– 30458 ksi


420F Steel Chemical Elements



















Corrosion Resistance of 420F Stainless Steel

420F stainless steel offers good corrosion resistance in mildly corrosive environments such as fresh water, atmospheric conditions, and mild chemicals. Its high chromium content (12-14%) provides a protective oxide layer on the surface of the material, preventing rust and corrosion.

However, 420F steel may not be suitable for use in highly corrosive environments, such as those containing acids or salt water, as it may experience pitting corrosion. Additionally, its high sulfur content may result in lower resistance to certain types of corrosion, such as intergranular corrosion. 

Overall, the corrosion resistance of 420F steel is suitable for many common applications, but it is important to consider the specific environment in which the material will be used to ensure it is appropriate for the intended purpose.

Applications of 420F Steel

420F steel has a wide range of applications due to its unique properties. Its excellent machinability makes it a popular choice for manufacturing components that require high precision and smooth surface finish, such as surgical instruments, valves, and gears. 
Additionally, its moderate strength and good corrosion resistance make it suitable for use in components that are exposed to mild corrosive environments, such as pump shafts, bolts, and nuts. The sulfur content in 420F steel also makes it a popular material for fasteners, as it improves threadability and reduces the risk of galling. 
In the medical industry, 420F steel is commonly used for surgical instruments and dental tools due to its biocompatibility and resistance to corrosion. It is also used in the food and beverage industry, where it is ideal for manufacturing processing equipment that requires frequent cleaning and sanitization. 

Forte Precision Metals is here for you if you need an efficient steel round bar supplier and a centerless ground bar supplier who provides you with quality 420F steel round bar stocks! We work closely with our clients to ensure that their precision ground bars are delivered to the correct specifications.

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Forte Precision Metals provide Precision Ground Bars & Centerless Ground services nationally and worldwide
Forte Percision Metals, Inc.
9234 Parklane Ave. Franklin Park, IL 60131
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