... , punching stainless steel, copper, silicon, aluminum. Stainless steel, silicon steel stamping die.Tool steel 1.2436 / D6, flat bar, D2/1.2379 ... .2436 / D6, flat bar2. Properties: Cold work steel. For cutting, stamping and pressing tools.3. Manufacture: Electric furnace steel, vacuum treated ... ,1.2601,1.2379,1.2419,1,2108,etc. TOOL DIE 1.2436