About Us

In the past 75 years, Magnetic Metals has grown from a company that originally made nickel-iron transformer laminations for the U.S. military’s World War II telecommunications needs, to a major supplier of components for industries producing and using today’s most advanced electronics. During that time, we have acquired the experience, technical expertise and production capability to make us one of the most competitive producers in our industry.
1942 | ![]() |
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1953 | Expanded manufacturing capacity and product line to include oriented and non-oriented silicon steels. | |
1956 | Conceived and introduced low carbon steel for use in motor laminations, thereby improving electrical performance at reduced costs. | |
1960’s | ![]() |
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1960’s | Established Metales Magneticos in San Juan del Rio, Mexico to supply the market with transformer and motor laminations. | |
1964 | Established a lamination stamping operation in Brantford, Ontario, Canada. | |
1977 | Inductotherm Industries acquired Magnetic Metals Corporation. | |
1979 | Acquisition of Haddon Tool, manufacturer of precision rotating components. | |
1981 | ![]() |
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1985 | Acquisition of SGL Industries, manufacturer of nickel and silicon tape wound toroidal cores. | |
2003 | Acquisition of National Arnold Magnetics, the premier manufacturer of tape wound toroidal and tape wound cut cores. |