H13 HOT WORK TOOL STEEL
|H13 is particularly
suitable for aluminium , zinc and magnesium die casting tools where
resistance to heat checking is of prime importance.
Other uses include extrusion dies and mandrels, hot piercing tools, hot blanking and forging dies, shear blades, hot punches and die inserts.
|If possible pack in a suitable sealed container with spent carburising mixture or cast iron chippings. Heat to 850°C / 870°C, hold for sufficient time to ensure uniformity, then cool no faster than 25°C per hour to 650°C followed by air cooling. This should result in a hardness of 235 HB maximum.