Type 430 stainless steel is made up of 17 percent chromium and 0.12 percent carbon while 304 stainless steel contains 18 percent chromium and 0.08 percent carbon.  Both are high quality steels that are resistant to rust and corrosion and can withstand the extreme temperatures created by the Slow ‘N Sear and will provide many years of use.  Our warranty remains the same.