Din 1.4034 SS 430 Flat Bars, SS UNS S42000 Flat Bars, Stainless Steel 420 Flat Bar, 420 Stainless Steel Cold Drawn Bars Suppliers in China. Grade 420 stainless steel is a high-carbon steel with a minimum chromium content of 12%. Like any other stainless steel, grade 420 can also be hardened thro...