Stainless Steel

AISI 420ESR Mold Quality Stainless SteelAISI 420 ESR Is an air or oil hardening mold steel having superior internal steel cleanlinesscombined with good resistance to corrosion. It is suitable for mold applications and is capable ofproviding an excellent polished surface.The manufacture of 420 ESR includes an additional refining step. High quality 420 steel type isremelted in a process called Electro-Slag-Refining or ESR. This remelting process provides a 420type steel with the very low inclusion content required by mold makers who polish mold surfaces.Typical AnalysisCarbon .30 - .40 Sulfur .030 MaxManganese 1.00 Max Silicon 1.00 MaxPhosphorus .030 Max Chromium 12.00-14.00AnnealingAtmosphere controlled furnaces should be used. Heat uniformly to 1550