What are alloy hardeners and why do we add them to pure or primary aluminium? By the very term alloying hardeners, to can imagine why the first series of alloying ‘ingredients’ were added to pure aluminium. Adding alloys or a combination of alloys began because of several discoveries on the use of primary aluminium for industrial applications. Aluminium in its pure form has low strength, limited conductivity, ductility and viscosity (required for die casting). Pure aluminium

EMC and LHC Cast Tooling for Wrought Alloys in 3xxx – 5xxx Series.