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Stainless Steel Grades

A reliable source for Stainless Steel information and leading Stainless Steel Companies & Manufacturers.

Of all the different series, the 200, 300 and 400 series are the most common. Stainless steel is graded through consideration of the environment that it will be assigned to. Read More…

Stainless Steel Grades There is an incredible variety of stainless steel grades available, which are categorized into six different series: 100 series, 200 series, 300 series, 400 series, 500 series and 600 series.
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Leading Manufacturers

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!

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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.

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Cada Stainless & Alloys $$$

Pompton Plains, NJ  |  800-838-1978

Our company may have started small, but we quickly grew to handle the largest aluminum orders. Our metals are made from the highest quality materials, and we pledge to offer superior service to all our customers. We don’t want customers who use us one time, we want to establish lifelong relationships with customers that last generations. Contact us for more info!

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Metal Associates $$$

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.

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Metalmen Sales Inc. $$$

Santa Fe Springs, CA  |  562-236-9787

Here at Bergsen we strive to adapt to the ever-changing market to best meet the needs of our customers. All of our aluminum and stainless steel are top quality at a fair completive price. Our team is committed to first rate service and building lasting relationships with our customers.

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Bergsen Metal $$$

Houston, TX  |  215-673-3595

Metals USA has aluminum plate, aluminum pipe, aluminum tubing and much more available to our customers. We are one of the top 10 metal service centers in North America, so call or visit us online today to see how we can be of service to you with our aluminum products and processes.

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Metals USA $$$
placeholder image Source 21, Inc. Cada Stainless & Alloys Metal Associates Metalmen Sales Inc. Bergsen Metal Metals USA

The typical stainless steel grading system used for stainless steel is the Society of Automotive Engineers (SAE) Grades, which is designated by the SAE, and the UNS grades. Since stainless steel is an iron-based alloy, stainless steel grades contain a minimum of 11% chromium. In addition to chromium, alloys such as molybdenum, copper and titanium may be added to amplify certain properties.

Some overarching characteristics of stainless steel include corrosion-resistance, high ductility, weldability and cryogenic toughness. Another benefit of stainless steel grades is that they are totally recyclable, creating increasing demand amongst environmentally-friendly consumers.

Stainless Steel Rods Stainless Steel Grades - Metal Associates

Additionally, stainless steel grades have wide-ranging applications such as consumer appliances, automotive exhausts, surgical instruments, heaters, valves, knife blades, chemical tanks, heat exchangers and spring clips. As a result, stainless steel grades are utilized in numerous industries including medical, automotive, manufacturing, aerospace, printing, marine and petrochemical.

The different series of stainless steel grades all have unique characteristics. The 100 through the 300 series are all various grades of austenitic stainless steel, which is the most common type of stainless steel in production. Some characteristics that are unique to the 100 series include the composition of austenitic chromium-nickel-manganese alloys that are available in two types: type 101, which can be hardened through cold working; and type 102, which is a more general purpose type of stainless steel. Both types are often used in furniture. The 200 series is also composed of austenitic chromium-nickel-manganese alloys, although the percentages differ.

This series includes type 201 and type 202, which mirror the 100 series types. The 300 series is the largest series and are composed of austenitic chromium-nickel alloys. Some types within these series feature the addition of molybdenum for increased corrosion resistance and changing carbon content depending on their designated environment. Types 304 and 316 are the most common types in the 300 series.

The 400 series includes various grades of ferritic and martensitic stainless steel and are all composed of chromium alloys. The types of stainless steel in this series are magnetic and typically contain 11% chromium and 1% manganese. The 500 series consists of heat-resistant chromium alloys and is not very large or commonly used. Lastly, the 600 series consists of martensitic precipitation-hardening alloys that can undergo heat treatment and attain high strength levels.

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