Standard silicon-iron (silicon steel) laminations are one of the most popular materials for use in soft magnetic applications. These alloys, in both oriented and non-oriented forms are often chosen for use in transformers, inductors, and motors because of their high saturation induction (Bs) and good permeability (µ). As long as these applications are in the lower frequency range (50-60 Hertz), these laminations offer an excellent price/performance ratio.

	MAGNETIZATION	CORE LOSS
ARNON™ 5
ARNON™ 7
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However, for modern high efficiency, high performance applications, there is a need for operating AC devices at higher frequencies, i.e., 400 Hertz to 10 kiloHertz. Because of the thickness of the standard silicon iron alloys (0.010" or more), core loss due to eddy currents is excessive.

Arnold produces both oriented and non-oriented silicon steel laminations at thin gauges (down to 0.001" thick). Our proprietary processing and insulation materials produce thin gauge silicon steels that are ideal lamination materials for high frequency power devices.

Arnold has two standard non-oriented lamination products: ARNON™ 5 and ARNON™ 7. Both are designed to have very low core loss in non-oriented applications such as motors, generators, and other devices that have rotating magnetic fields. At frequencies above 400 Hz, they typically have less than half the core loss of standard gauge non-oriented silicon steel laminations.

ARNON™ 5 and 7 laminations can be shipped bare or with a proprietary insulation coating. This material is an inorganic coating, capable of surviving 1,700 ^oF annealing temperature (C-5 IEEE coating classification).