What Does 200, 300, 400, 500, 600 Series Stainless Steel Mean?
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People often ask about the differences between the 200 series, 300 series, 400 series, 500 series, and 600 series of stainless steel.
As the demand for stainless steel continues to rise, understanding where these different types of stainless steel are used is essential for your project. Let's dive into the distinctions between these series!
Stainless Steel Series Breakdown:
Stainless steel is categorized into five main groups based on its chemical composition:
200 Series: Chromium-nickel-manganese austenitic stainless steel (Cr-Mn-Ni)
300 Series: Chromium-nickel austenitic stainless steel (Cr-Ni)
400 Series: Chromium-ferrite and martensitic stainless steel (Cr)
500 Series: Heat-resistant chromium alloy steel
600 Series: Precipitation-hardened martensitic stainless steel
Key Points to Remember:
300 Series Stainless Steel is the most commonly used, offering excellent corrosion resistance and high strength.
200 Series and 400 Series stainless steels can act as alternatives to 300 series to some extent.
Strictly speaking, 10Cr17 (430 stainless steel) and 12Cr13 (410 stainless steel) in the 400 series are technically not "stainless" steel because they do not contain nickel. As a result, they are magnetic.
200 Series and 300 Series stainless steels both contain nickel, which makes them non-magnetic.
500 Series and 600 Series stainless steels are typically more expensive and are designed for specific, high-performance applications in harsh environments.
