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Alloy C22 vs 316L – What’s the Difference

Alloy C22 Vs 316L

For anyone working with metals, having the right knowledge about alloys is essential. It’s important to know the properties and applications of different alloys in order to choose the best option for any given project. In this blog post, we’ll be taking a look at two popular alloys—C22 and 316L—and comparing their properties.

What is Alloy C22?

Alloy C22 (or UNS N06022) is a nickel-chromium-molybdenum alloy that has excellent corrosion resistance in both oxidizing and reducing environments. The alloy also offers good mechanical strength and formability, making it an ideal choice for metal fabrication projects that require excellent corrosion protection in extreme environments like seawater or chemical processing plants. On top of its superior corrosion protection, Alloy C22 also provides good thermal stability and strength up to 1400°C (2550°F).

What is 316L?

316L (or UNS S31603) is a stainless steel alloy that also offers excellent corrosion resistance in both oxidizing and reducing environments. While it does not have quite as much corrosion protection as Alloy C22, it does offer superior weldability due to its low carbon content. This makes it ideal for welding applications where high amounts of heat are involved, such as welding tanks or pressure vessels. Additionally, 316L can be used within temperatures ranging from -196°C (-321°F) up to 600°C (1112°F).

Difference Between Alloy C22 and 316L


Alloy C22 and 316L stainless steel are both austenitic steels, meaning they are non-magnetic and have a high level of chromium and nickel. However, they differ in their composition. Alloy C22 contains 22% chromium and 2.5% molybdenum, while 316L contains 16-18% chromium and 2-3% molybdenum.


As a result of their different composition, alloy C22 and 316L stainless steel have different properties. Alloy C22 is more resistant to pitting and crevice corrosion than 316L stainless steel. Additionally, it has better resistance to stress corrosion cracking and is more weldable than 316L stainless steel. However, 316L stainless steel has better resistance to general corrosion than alloy C22.


Alloy C22 and 316L stainless steel are both used in a variety of applications. Alloy C22 is often used in chemical processing, oil and gas, and power generation applications, while 316L stainless steel is often used in food processing, marine, and medical applications.


Alloy C22 is typically more expensive than 316L stainless steel due to its higher chromium and molybdenum content. However, the price difference between the two metals will vary depending on the current market conditions.


Alloy C22 is less widely available than 316L stainless steel as it is not as commonly used in applications. As a result, it may be more difficult to find alloy C22 products on the market.


Alloy C22 and 316L are two popular alloys used in metal fabrication projects due to their superior corrosion resistance qualities. However, each alloy has certain advantages over the other, depending on the application they’re being used for. If you’re looking for corrosion protection in extreme environments such as seawater or chemical processing plants, then Alloy C22 is your best bet; however, if you need superior weldability, then 316L should be your go-to choice. Ultimately, it’s important to consider all the factors before choosing an alloy so that you can get the most out of your project!

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