H13, equivalent to 883 tool steel, is a 5% chromium, hot work tool steel designed particularly for applications requiring extreme toughness combined with good red hardness. It will provide an extra margin of safety in tools subject to hammer blows and those tools containing deep recesses and sharp corners. While H13 die steel has been designed primarily as a hot work tool steel, it has found many applications in cold work tools where extra toughness is required at the sacrifice of some wear resistance.
