Short answer: 304 and 430 are the two most common stainless steels but solve different problems. 304 is austenitic, nickel-bearing, and highly corrosion resistant; 430 is ferritic, lower-cost, magnetic, and best for indoor decor and appliances. Choose 304 where corrosion and hygiene matter, 430 where cost and appearance indoors dominate.
At a Glance
Composition and Family
304 is austenitic (18% Cr, 8% Ni) and non-magnetic in the annealed state; 430 is ferritic (16-18% Cr, no nickel) and magnetic. The nickel in 304 is what drives up its price and gives it superior corrosion resistance and formability.
Corrosion and Hygiene
304 resists atmosphere, food acids, and most chemicals far better than 430, which can rust in wet or chloride environments. That makes 304 the food, medical, and outdoor standard, while 430 suits dry indoor decor and appliances. See our full stainless range.
Formability, Magnetism, and Cost
430 is easier to deep-draw for sinks and trim and is magnetic, which matters for some assemblies; 304 forms well too but is non-magnetic and costs more. For budget indoor panels and automotive trim, 430 is the economical pick.
Which Grade Should You Specify?
Specify 304 for food, medical, marine, and outdoor or hygienic duty. Specify 430 for indoor decor, appliances, and automotive trim where cost and appearance lead. Tell HXSCO the environment and we will recommend the grade.
Domande frequenti
304 is nickel-bearing austenitic (corrosion resistant, non-magnetic); 430 is nickel-free ferritic (lower cost, magnetic).
No – 430 can rust in wet or chloride environments; 304 resists atmosphere, food, and most chemicals far better.
Yes, 430 is ferritic and magnetic; 304 is essentially non-magnetic in the annealed state.
430 is cheaper because it contains no nickel; 304 costs more but earns it in corrosion resistance.
304 is the hygiene and corrosion standard for sinks; 430 is used for lower-cost indoor trim and some appliances.
Ready to source 304 vs 430 Stainless Steel from HXSCO?
Send us the grade, form, dimensions, quantity, and any certification or test requirements. HXSCO replies with a competitive quote, lead time, and mill-test options.
Request a Quote