Core Wire Technologies in Commercial Aircraft

• Core Wire Technologies in Commercial Aircraft
• What types of wire does MWS supply for the commercial aircraft industry?
• Why is insulation so important for aerospace wire?
• What are some of the key performance factors for aerospace wire insulation?
• What conditions make Polyimide ML insulation a good choice for Aerospace Electronics?
• What are three critical wire types for commercial aircraft?
• Building Reliable Aircraft Systems

Commercial aircraft depend on specialty wire products that can survive vibration, temperature swings, and continuous operation all while adhering to strict safety requirements. In the aerospace sector, wire technology goes far beyond mere conductivity. The key factors are maintaining reliability, reducing weight, and supporting long service life across systems like avionics, power distribution, cabin systems, and motor assemblies. Whether it’s wire for stators, solenoids, or sensors, MWS’s aerospace wire solutions are built around high-performance, traceable manufacturing, and documented regulation compliance.

What types of wire does MWS supply for the commercial aircraft industry?

MWS provides a variety of wire solutions such as wire for solenoids, magnet wire for complete MRO motor rewinds, or stainless steel wire for tiedown applications. MWS also provides magnet wire in specialty shapes such as square and rectangular wire for small and compact motor systems. Finally, MWS provides insulation options critical to reliable wire performance in the aerospace environment.

Why is insulation so important for aerospace wire?

Aerospace wire can only perform as intended if it is properly protected from environmental hazards.  MWS offers multiple insulation families to match different thermal classes and application needs, including polyester, polyurethane, and Polyimide. That variety matters because not every aircraft system faces the same heat load or mechanical demand. Choosing the right insulation helps balance flexibility, durability, temperature resistance, and long-term electrical performance.

What are some of the key performance factors for aerospace wire insulation?

Dielectric strength is critical in wire insulation because it helps prevent electrical breakdown between the conductor and surrounding materials. In simple terms, dielectric strength is the ability of an insulating material to resist electrical stress without allowing current to leak, arc, or fail. In aircraft, that matters because wiring must perform safely in cramped spaces, around vibration, and under changing environmental conditions.

What conditions make Polyimide ML a good choice for Aerospace Electronics?

One of the most important insulation materials for aerospace electronics is Polyimide ML. Polyimide is a durable, high-temperature insulation with a thermal class rating of 240°C. This makes it suitable for heat exposure from both inside and outside core aviation systems. That performance matters in aerospace because equipment often operates near engines, braking systems, and other hot zones where other wire insulation would fail. Polyimide is a strong fit for systems like wheel speed sensors, brake control systems, and a wide range of aerospace applications where critical circuits and components must keep working under severe thermal stress.

What are three critical wire types for commercial aircraft?

Three wire types are especially important in aviation.

1. Magnet Wire for Motor Rewinds. Motor rewinding helps extend the service life of electric motors and generators used across commercial aircraft support systems, including actuators, pumps, fans, starters, and auxiliary power units (APUs). For aerospace MRO providers and FAA-certified repair stations specializing in aftermarket motor rewinds, we supply high-strength copper magnet wire in rectangular, Litz, or round enamel forms, precisely matched to the original gauge, resistance, and thermal class of legacy equipment.
2. Square and rectangular wire.  Custom wire geometries deliver more power in less space.  Square and rectangular magnet wire, including MWS Microsquare Magnet Wire® and other specialized shapes are a way to create compact coils and small motors with tighter dimensional control. Flat wire is also valued across aerospace because it can be rolled to exact dimensions for specialized performance needs.
3. Aviation tie wire. Tie wire is used to secure fasteners, so they stay in place during flight and under vibration. That kind of mechanical retention is a small detail with a big safety impact, because it helps keep assemblies stable in harsh operating conditions.

Building Reliable Aircraft Systems

The commercial aircraft market depends on wire technologies that do more than carry current. They must support safety, thermal endurance, compact design, and consistent performance over the aircraft lifecycle. That is why MWS focuses on specialized conductors and insulations tailored to specific aviation requirements rather than one-size-fits-all products.

From Polyimide ML insulation, to magnet wire in motor rewinds , to square and rectangular wire in compact assemblies, each product solves a different engineering challenge. Together, these wire technologies help aircraft systems stay lighter, safer, and more efficient while meeting the demands of modern flight. Learn more about our aerospace wire on our Aerospace Industry Page.