430
Data verified430 is the most widely used ferritic stainless steel, a 17% chromium, nickel-free grade with good corrosion resistance in mild atmospheres and excellent resistance to nitric acid. It is the standard grade for appliance trim and decorative sheet.
Chemical composition
| Element | Content (%) |
|---|---|
| C | ≤0.12 |
| Si | ≤1.00 |
| Mn | ≤1.00 |
| P | ≤0.040 |
| S | ≤0.030 |
| Cr | 16.00–18.00 |
| Ni | ≤0.75 |
Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.
Properties
| Delivery condition | Annealed |
| Hardness | ≤183 HB (annealed) |
| Tensile strength | 450–600 MPa |
| Yield strength | ≥205 MPa |
| Density | 7.70 g/cm³ |
| Magnetic | Yes |
Heat treatment
Anneal 790–845 °C, air or furnace cool. Cannot be hardened by heat treatment.
Equivalent grades
| Standard | Designation |
|---|---|
| din | 1.4016 |
| aisi | 430 |
| jis | SUS430 |
| gb | 10Cr17 |
Compare side by side: 430 vs 430F · 430 vs 434 · 430 vs 439
Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.
Applications & Processing
Applications: Dishwasher and refrigerator panels, range hoods, automotive trim, nitric acid equipment, roofing and cladding.
Processing: Formable but less ductile than 304; welding is possible but the heat-affected zone loses toughness, so it is less suited to heavy welded fabrications.
FAQ
- How can I tell 430 from 304?
- A magnet: 430 is ferritic and strongly magnetic, annealed 304 is essentially non-magnetic. Chemically, 430 contains no nickel.
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Ask for a quotationVisit NasteelSource: ASTM A240 / EN 10088 published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.