The alloy is a nickel-iron soft magnetic alloy, a high initial permeability soft magnetic alloy, and a high-nickel iron-nickel alloy, characterhigh initial permeability and maximum permeability as well as low coercivity.
1J79 is widely used for making pulse transformers, high-sensitivity relays, magnetic amplifiers, and magnetic regulators.
1J85 is widely applied in the radioics industry, precision instruments, remote control systems, and automatic control systems.