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of high-performance wire,
cable and tubing since 1959
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HML is a film-coated magnet wire made with aromatic polyimide resin. It is a Class 240 insulation with exceptional resistance to chemical solvents and burn-out. It will operate at temperatures in excess of 240°C for intermittent duty. The outstanding thermoplastic flow of over 400°C and its ability to withstand excessive overloads extends the use of magnet wire in extreme conditions. HML is unaffected by prolonged exposure to varnish solvents and is compatible with most systems.

Typical Applications

Whenever high temperatures and extreme overload or ambient conditions are required, HML magnet wire may be used.
  • Fractional and integral horsepower motors
  • High temperature continuous duty coils and relays
  • Hermetic and sealed units
  • Heavy duty hand tool motors
  • Encapsulated coils
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Item #

AWG Size

Nom. Bare Wire Diameter

Min. Increase in Diameter Due to Film Coating

Max. Overall Diameter of Film-Coated Wire

N/A 40-1/2 N/A 0.003 in0.076 mm N/A 0.0005 in0.013 mm N/A 0.0039 in0.098 mm
N/A 41 N/A 0.0028 in0.071 mm N/A 0.0005 in0.013 mm N/A 0.0036 in0.091 mm
N/A 42 N/A 0.0025 in0.064 mm N/A 0.0004 in0.010 mm N/A 0.0032 in0.081 mm
N/A 42-1/2 N/A 0.0024 in0.061 mm N/A 0.0004 in0.010 mm N/A 0.0031 in0.079 mm
N/A 43 N/A 0.0022 in0.056 mm N/A 0.0004 in0.010 mm N/A 0.0029 in0.074 mm
N/A 44 N/A 0.002 in0.051 mm N/A 0.0004 in0.010 mm N/A 0.0027 in0.069 mm
N/A 45 N/A 0.00176 in0.0447 mm N/A 0.0004 in0.001 mm N/A 0.0024 in0.0610 mm
N/A 46 N/A 0.00157 in0.0399 mm N/A 0.0003 in0.008 mm N/A 0.0021 in0.0533 mm
N/A 48 N/A 0.00124 in0.0315 mm N/A 0.0002 in0.005 mm N/A 0.00170 in0.0432 mm
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