304 stainless steel

You’ve got questions. We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we cover the differences between T-304 and T-409 stainless steel. K.R. Fort Wayne, IN Q: When shopping online, I notice a lot of stainless steel parts, such as exhaust components, are classified as “304 stainless steel” or “409