1.1 ,This specification covers two wrought iron-cobalt alloy types for use in magnetic components requiring high permeability at and above 15 kG (1.5 T) or high magnetic saturation. The specific alloy types covered are:
| Alloy Type | UNS | Nominal Composition |
| , | , | , |
| 1 | R30005 | 49 ,% Co, 49 ,% Fe, 2 ,% V |
| 2 | K92650 | 27 ,% Co, 0.50 ,% Cr, balance Fe |