DIN 1.2363 steel is called JIS SKD12 and AISI A2 steel. 1.2363 steel is a cold work mold steel that is improved on the basis of SKD11 steel. The toughness of 1.2363 steel is twice that of SKD11. The retained austenite is almost all decomposed under the conventional heat treatment conditions. The toughness of 1.2363 steel is great in the cold work mold steel. There are no cracks of industrial products due to be made of A2 steel round bar sheet plate material.