Which stainless steel series is not Ferritic?

Which stainless steel series is not Ferritic?

• A. 316 series Stainless Steel
• B. 405 series Stainless Steel
• C. 410 series Stainless Steel
• D. 300 series Stainless Steel

Answer: (D)

Stainless steels are grouped by their crystal structure: austenitic, ferritic, and martensitic. Ferritic types are chromium-based and magnetic, martensitic types are hardenable by heat treatment, and austenitic types are nickel-stabilized and have a face-centered cubic structure. The group that is not Ferritic is the austenitic family, which makes up the 300-series. Because of their nickel-stabilized austenitic structure, these steels are not Ferritic (and are typically non-magnetic and not heat-treatable for hardness). The other options belong to ferritic or martensitic families, which is why they are not in the same non-Ferritic group as the austenitic 300-series.

Stainless steels are grouped by their crystal structure: austenitic, ferritic, and martensitic. Ferritic types are chromium-based and magnetic, martensitic types are hardenable by heat treatment, and austenitic types are nickel-stabilized and have a face-centered cubic structure. The group that is not Ferritic is the austenitic family, which makes up the 300-series. Because of their nickel-stabilized austenitic structure, these steels are not Ferritic (and are typically non-magnetic and not heat-treatable for hardness). The other options belong to ferritic or martensitic families, which is why they are not in the same non-Ferritic group as the austenitic 300-series.