Viscount 44® Round Rods
is a fully heat-treated H-13 hot work steel with carefully controlled
and evenly dispersed sulphide additives. It is the same analysis type as
H-13, but the free-machining sulphides improve the machine ability to
the point where die work at a hardness of Rockwell C 42-46 is practical.
It is thus possible to bypass the risk of heat treatment involved in