December 1, 2020
By: Dave Olsen
- Ferritic Stainless Steels.
- Stainless steels owe their ability to resist corrosion primarily to the presence of a passive film on their surface, chiefly caused by the presence of chromium. Iron ceases to rust at approximately 12% chromium content and resistance to oxidizing corrosives increases rapidly with chromium content up to about 20%. Beyond that level, resistance is increased at a more gradual and declining rate, so very few stainless alloys contain more than 27% chromium. Alloys composed principally of chromium and iron, with low carbon content, have a crystal structure that is chiefly ferrite.
Properties – Why select this material
- Hardness range: 150 to 255 BHN
- Weldable but tends to be brittle unless annealed after welding
- Corrosion resistance good to excellent in oxidizing environments
Typical Alloys in this family
- MTEK 405
- MTEK 430
For guidance in selecting the appropriate ferritic stainless steel in your application, contact us.
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