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Carpenter High Permeability "49"® Alloy

Nominal Analysis
0.02 C, 0.50 Mn, 0.35 Si, 48.00 Ni, Bal. Fe

A 48% nickel-iron alloy with high initial and maximum permeability and low core loss after suggested heat treatment. Has been used in laminated cores for instrument transformers, magnetic shields, solenoid cores, and various sensitive magnetic core components. Unannealed strip items 0.020" thick or less are available as Transformer (oriented) and Rotor (unoriented) grades.

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