SOFT MAGNETIC ALLOY - Supermalloy ;) Composition (Nominal) : Mo 4.8-5.2; Ni 79.0-81.0 : Fe Bal ,: ( Supermalloy is an alloy composed of Ni (80%), Mo (5%), and Fe.It is a magnetically soft material. It has a high magnetic permeability and a low coercivity. : ( Product availability and request a QUOTE!