304 vs 430 Stainless Steel

Choose 304 for the more corrosion-resistant food-contact surface and 430 when magnetism, lower alloy cost, or an induction-facing layer matters more. Neither is best for every finished product.

304 is an austenitic chromium-nickel grade. 430 is a ferritic chromium grade with little or no intentionally added nickel. That structural difference explains most of the practical tradeoffs.

304 vs 430 at a glance

Decision	304 stainless steel	430 stainless steel	Better fit
Alloy family	Austenitic	Ferritic	Depends on task
Typical nickel	Contains nickel	Little or no intentional nickel addition	430 when avoiding nickel in the alloy is required
Corrosion resistance	Stronger in many food and wet settings	Good in mild settings, less resistant in demanding exposure	304
Magnetism	Usually nonmagnetic when annealed	Magnetic	430 for magnetic response
Formability	Excellent	More limited for deep forming	304
Common uses	Sinks, cookware surfaces, food equipment	Appliance trim, flatware, magnetic cookware exteriors	Depends on component

Composition and alloy family

World Stainless identifies 304 as the familiar 18/8 austenitic grade and 430 as a widely used ferritic grade. Chromium supports the passive surface film in both. Nickel in 304 stabilizes its austenitic structure, while 430’s ferritic structure provides magnetic behavior without relying on nickel for that role.

Commercial labels are approximate descriptions, not laboratory certificates. If exact chemistry matters, request the relevant material standard and a mill certificate rather than trying to identify the alloy by appearance.

The food-grade stainless steel guide explains why a composition label also cannot certify a complete food-contact product.

Which resists corrosion better?

304 generally offers stronger corrosion resistance across kitchen, wet, and food-service conditions. It is a common default for sinks, processing equipment, and cookware surfaces because it combines corrosion resistance with formability and cleanability.

430 performs well in mild indoor service but is more vulnerable when salt, acidic residue, harsh cleaners, or persistent moisture challenge the passive surface. Good design and care still matter. Crevices, rough fabrication, deposits, and chlorine bleach can undermine either alloy.

For chloride-heavy settings, 316 may be more suitable than either. See the separate 304 versus 316 stainless steel comparison for that choice.

Winner: 304 for broad corrosion resistance.

Which grade is magnetic?

430 is magnetic because it is ferritic. Annealed 304 is usually nonmagnetic or only weakly magnetic, although forming can create some magnetic response. A magnet is therefore useful for distinguishing broad behavior but cannot certify a grade.

This difference is valuable in cookware. A clad pan can use 304 or a related austenitic alloy against food and 430 on the exterior so the pan couples with an induction field. The two alloys are doing different jobs in one product.

Read why some stainless steel is magnetic and how stainless cookware works on induction before judging a multilayer pan by one label.

Winner: 430 when a strong magnetic response is required.

Which is better for food contact?

304 is the usual choice for demanding, general-purpose food-contact surfaces, but a grade number alone does not establish suitability. 430 also appears in flatware, appliances, and cookware components. The finished article must match the food, temperature, duration, cleaning method, and local requirements.

Do not translate “contains nickel” into “unsafe” or “little nickel” into “automatically safer.” Corrosion behavior, surface integrity, fabrication, and measured migration conditions all matter. The scheduled nickel review explains nickel migration from stainless cookware without turning one experiment into a universal exposure estimate.

Winner: 304 for the more corrosion-resistant food-contact default; finished-product documentation decides.

304 vs 430 for flatware

Both families are used for flatware. An 18/10 marking commonly points toward austenitic stainless with nickel, while 18/0 commonly points toward ferritic stainless such as 430. The 18/10 option usually resists staining and pitting better. The 18/0 option is magnetic, often less expensive, and avoids intentional nickel addition to the alloy.

Handle balance, gauge, finish, manufacturing quality, and care can matter as much as the marking. Our scheduled 18/0 versus 18/10 flatware comparison turns those material differences into a purchase decision.

How to choose

Choose 304 when you need:

• A general-purpose food-contact or wet-service surface
• Better resistance to common staining and corrosion
• Deep forming or complex shapes
• A common specification for sinks, vessels, and food equipment

Choose 430 when you need:

• Reliable magnetic response
• An induction-facing cookware exterior
• Appliance trim or an indoor component in mild service
• Flatware where cost and nickel composition outweigh maximum corrosion resistance

If the component faces salt, strong chemicals, high heat, or regulated sanitation, specify the whole service environment. A broad 304-versus-430 rule cannot replace an application-specific standard.

Final verdict

304 wins for corrosion resistance and is the safer default for demanding food-contact surfaces. 430 wins for magnetism and can be a sensible material for flatware, appliance parts, and induction-facing layers.

Choose by the component’s job. In a well-designed product, 304 and 430 can work together rather than compete.

Sources

• World Stainless Association, categories, grades, and product forms (retrieved 2026-07-11)
• British Stainless Steel Association, cutlery stainless steel grades (retrieved 2026-07-11)
• Nickel Institute, Nickel-containing stainless steels in food-contact materials (retrieved 2026-07-11)

For a product decision rather than an alloy comparison, use the stainless cookware for induction roundup and verify the exact set against your cooktop.