Abstract: A sintering process for producing an aluminide by reacting a first powder with a second powder, the first powder comprising MxAly wherein M is Fe, Ni or Ti, x≧1, y≧1 and x>y or y>x and the second powder comprises pure M or M alloy powder. Iron aluminides such as Fe3Al, FeAl or alloys thereof can be made by reacting powders of one or more of Fe3Al, FeAl3, FeAl2, Fe2Al5 or alloys thereof with pure iron or an iron alloy. Nickel aluminides such as Ni3Al or NiAl or alloys thereof can be made by reacting powders of one or more of NiAl3, Ni2Al3, Ni3Al2, Ni5Al3 or alloys thereof with pure Ni or a Ni alloy powder. Titanium aluminides such as Ti3Al, TiAl or alloys thereof can be made by reacting one or more of TiAl3, TiAl2 or alloys thereof with pure Ti or Ti alloy powder. The process provides a more dense product by solid state reaction of an intermediate intermetallic compound with a component of the final aluminide compact.