Stainless steel 430 is a ferritic alloy containing 16 to 18% chromium, offering good corrosion resistance in mild environments and a lower cost. Stainless steel 410 is a martensitic alloy with about 11.5 to 13.5% chromium and a higher carbon content, which provides greater hardness and mechanical strength but lower corrosion resistance. While 430 is used in appliances and decorative finishes, 410 is applied in knives, valves, and mechanical parts that require higher rigidity.