Why Is Stainless Steel Called Stainless?

What’s behind the corrosion resistance that earned stainless steel its “stainless” reputation? While iron is the main component in all types of steel alloys, stainless varieties also have 10-12% chromium content. The chromium in stainless steel is what gives the material its edge in standing up to corrosion. Derek Denlinger, metallurgist at Paulo, explains why in this installment of the Paulo Metallurgy Minute.