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Ferritic Stainless Steel

Last updated: October 29, 2017

What Does Ferritic Stainless Steel Mean?

Ferritic stainless steel is a type of steel with a chromium content of 10.5 to 27% and a carbon content less than 0.1%. These stainless steels are magnetic and incapable of hardening through heating. It was developed as a stainless steel group that can resist oxidation and corrosion, specifically stress cracking corrosion (SCC).

Ferritic stainless steel may also be known as ferritic steel.

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Corrosionpedia Explains Ferritic Stainless Steel

Ferritic stainless steels are known for their elevated chromium and low carbon contents. They are magnetic, ductile and highly resistant to corrosion. This kind of steel is typically used to manufacture industrial equipment, automotive parts and kitchenware.

Due to its nature, ferritic steels cannot undergo hardening or strengthening by heating, but its strength is enough to resist corrosion. However, it can be softened or cold worked through the process of annealing. Although it is not as strong as austenitic metals, its engineering properties are superior. However, this category of stainless steel has limitations during welding.

Ferritic steels are more affordable with a wide range of applications. Ferritic stainless steel is classified into five groups:

  • Group I (type 409 / 410L)
  • Group II (type 430)
  • Group III (type 430Ti, 439 & 441)
  • Group IV (type 434, 436, 444)
  • Group V (type 446, 445, 447)
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Synonyms

Ferritic Steel

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