H11 steel also is called DIN 1.2343 and JIS SKD6 steel. 1.2343 steel is the air-cooling type hot work mold steel. It is one of the three most commonly used of hot work mold steel in the European die-casting industry. The carbide is small and distributed uniformly in steel. H11 tool steel has great cold and heat fatigue resistance, corrosion resistance, hot and cold processing performance and hardenability. It has oxidation resistance, high toughness and wear resistance in the medium temperature. H11 steel round bar sheet plate properties and H11 steel heat treat as below.