Nickel-iron alloy 1J79 (Moly Permalloy) is a soft magnetic alloy with about 80% nickel and 4% molybdenum. It offers extremely high permeability for weak-field applications, such as magnetic shielding and sensitive sensors.
1J79 (Moly Permalloy, 4-79 Permalloy) is a soft magnetic nickel-iron-molybdenum alloy (about 79% nickel, 4% molybdenum) valued for very high permeability and very low coercivity in weak fields.
1J79 is well suited to magnetic shielding, sensitive sensor cores, and low-level transformer parts.