420 Stainless Steel

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As such, after heat treatment, they achieve high levels of hardness, strength and wear resistance. In fact, at 50 HRC, grade 420 stainless steels achieve the highest hardness level of all 12% chromium stainless steels. Grade 420 stainless steels are commonly used steels, and they are frequently fabricated into items like: knife blades, cutlery, needle valves, shear blades, and surgical equipment and instruments. Read More…

420 Stainless Steel The term "stainless steel 420" refers to a small group of steel alloys with similar chemical compositions, grouped together based on the judgement of SAE International, or the Society of Automotive Engineers. Grade 420 stainless steels are high carbon steels with, at minimum, a 12% chromium content.

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Sound Beach, NY  |  631-821-1101

We provide the best products in the stainless steel industry. Our customers know they can trust us for quality, affordability, and convenience. Our multiple locations make it easy to get what you need within days! Some orders can be shipped on the same day for extremely fast delivery. Find out how we can help you by contacting us today! We’d love to help you find what you need.

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Source 21, Inc. $$$

Chester, NY  |  845-469-3899

Cada Stainless is a distributor of stainless steel in strip, coil & sheet. All grades of stainless steel available- annealed, tempered in 301,302,304,316, straight and L grades, 17/4, 17/7, 420,430,440, temper rolling to specific thicknesses & tolerances available. We are ISO 9000 certified! With competitive prices & quality service, we can help your company get through these strange market times!

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Cada Stainless & Alloys $$$

Long Island City, NY  |  800-767-9494

Metalmen provides worldwide distribution of all stainless steel. With our wide range of products, we offer expert market advice and complete metalworking as a custom response supplier serving industry. We have been providing engineering and research for over 30 years. Fast delivery of so many on-demand and specialty metals; non-standards and small quantities welcomed!

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Metalmen $$$

Pompton Plains, NJ  |  800-838-1978

When people think of stainless steel they think of us! We strive to achieve 100% customer satisfaction in order to keep them coming back to us for all of their stainless steel needs. Our amazing staff will provide you with excellent care and the fabulous customer service that we are known for. Browse through the products on our website in order to let us know exactly what it is that you need. We will do our best to accommodate whatever product you may need. Contact us today!

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Metal Associates $$$

Monroe, CT  |  475-231-1090

At Production Metals, we aim to provide high quality products, top-notch customer service, and use our superior product knowledge to ensure you get the product you need. We offer stainless steel rods and bars with diameters from 1/4" to 5". Various grades are also available, including 303 ULTRA, 304/L, 316/L, and more. We also offer precision cutting services with tolerances held up to P/M .005" Visit our website or call to get started!

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Production Metals $$$

Chicago, IL  |  312-292-5000

Stainless steel is one of the many types of metals we supply at Ryerson, including stainless sheet, coil, plate, bars, structurals, tubing & pipe. As a leading metals distributor & processor, we have unparalleled service centers throughout the US & Canada offering exceptional product range & fabrication capabilities.

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Ryerson Inc. $$$

Streetsboro, OH  |  440-287-0150

Integrity Stainless is a distributor of stainless steel sheets, coil and strip coil. Since 2005, we have been offering cost effective stainless steel solutions for fabricators and manufacturers across the United States. We are committed to providing the ultimate customer service experience. We deal in prime and secondary stainless steel.

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Integrity Stainless $$$
placeholder image Source 21, Inc. Cada Stainless & Alloys Metalmen Metal Associates Production Metals Ryerson Inc. Integrity Stainless

To provide the best services and exhibit the highest possible levels of hardness, any stainless steel 420 product should undergo heat treatment. Stainless steel 420 heat treatment usually begins with annealing and continues with hardening. Annealing is a process that involves heating the steel to between 840°C and 900°C, and then allowing it to cool slowly in a furnace to around 600°C and, finally, allowing the metal to air-cool.

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During this state, the stainless steel has excellent ductility and can be manipulated into many shapes. During hardening, stainless steel 420 is heated to temperatures between 980°C and 1035°C, immediately followed by air or oil quenching, both which are rapid cooling processes. Either quenching method may be chosen, but, for heavy metal sections, oil quenching is more effective. After quenching, to attain good mechanical properties and increased hardness, workers temper the steel, or bring it below its lower critical temperature.

In this case, they lower the steel's temperature to between 150°C and 350°C. Other procedures commonly performed on stainless steel 420 include welding and machining. The welding process is an ideal choice for those wishing to form strong joints. Note that the metal is easily machined while annealed, but presents far more difficulties when it reaches a hardness above 30 HRC.

Once stainless steel 420 has undergone heat treatment, it exhibits good resistance to corrosion from mild acids, alkalis, fresh water, air and food, lending it well to the applications mentioned above. To maintain the health and positive properties of a stainless steel 420 product, users must follow certain maintenance and care guidelines. If they do not, their product may succumb to discoloration, rust or the influence of strongly corrosive substances. This is especially true in environments more prone to the creation of stressing environments, such as indoor swimming pools or custodial services that use harsh chemicals.

In a workshop environment, to avoid contamination by carbon steel, or free iron, which frequently leads to accelerated and localized corrosion, take care to clean tools between processes. Common spots where contamination occurs include: on steel storage racks, with tools used with other metals, on finishing belts, on grinding wheels, from wire brushes, from grinding or welding sparks, and from being adjacent to carbon steel fabrication.

Keep stainless steel 420 clean by washing it with warm water and soap or a mild detergent, then rinsing it with cold water. To enhance the surface, wipe it dry. With a little care and cleaning, stainless steel 420 parts and products can last many years; they're well worth the investment.

420 Stainless Steel Informational Video