Understanding stainless-steel grades | Essentra Components …
Stainless steel 430 costs less than 304 due to the composition. Whereas 304 contains nickel, 430 contains none. This not only makes 304 more corrosion resistant, but also more expensive. If you're mulling over 304 stainless steel vs 430 stainless steel, then weigh the life span of your application against your budget to arrive at your decision.