Studies were made on the effect of several metal alloying constituents on certain physical properties of chemically deposited nickel-phosphorus deposits. Where previous investigations were concerned with solution and operating parameters affecting the production of the electroless ternary and quaternary alloys, the present work was largely confined to investigating some of their properties. However, this investigation did result in a new electroless alloy of unusual composition. The effects of the alloy constituent on corrosion resistance, ductility, microhardness and magnetic behaviour are reported.