AISI 430 Ferritic Stainless Steel: Magnetic, Cost-Effective Corrosion Protection
ASTM A240 · Published: 2026-06-03 · Updated: 2026-06-03
AISI 430 is a ferritic, magnetic stainless steel containing 16-18% chromium with no nickel. It offers good corrosion resistance in mildly corrosive environments at a significantly lower cost than 304 (nickel-free). Common applications include...
AISI 430 is a ferritic, magnetic stainless steel containing 16-18% chromium with no nickel. It offers good corrosion resistance in mildly corrosive environments at a significantly lower cost than 304 (nickel-free). Common applications include appliance trim, automotive exhaust components, and kitchen equipment.
Quick Facts
| Category | Stainless Steel |
| Standard | ASTM A240 |
| Density | 7.70 g/cm³ |
| Yield Strength | 310 MPa |
| Tensile Strength | 517 MPa |
Global Equivalents & Cross-Reference
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Frequently Asked Questions
Why choose 430 over 304?
430 costs approximately 40-50% less than 304 because it contains no nickel. The tradeoff is lower corrosion resistance and inability to be hardened by heat treatment. 430 is ideal for indoor applications where 304's premium corrosion performance is unnecessary.
References & International Standards
- ASTM International. Standard Specifications for Steel & Metal Alloys. astm.org
- International Organization for Standardization (ISO). Metallic Materials — Cross-Reference Database. iso.org
- American Iron and Steel Institute (AISI). Steel Grade Designations & Equivalents. steel.org
- European Committee for Standardization (CEN). EN Steel Standards & Numbering System. cencenelec.eu