For kit designers and manufacturers, selecting aircraft landing gear materials is a balance between weight, durability, buildability, and risk. The right material can help protect useful load and aircraft performance while giving builders components that can withstand real-world takeoffs, taxiing, landings, and maintenance.
That balance matters in the experimental and amateur-built aircraft market, where customers may still be developing consistency through the “learning curve” of amateur landings. Components can experience firm touchdowns, side loads, uneven runway surfaces, and installation variables. Material selection should account for those realities before a kit reaches the customer.
Landing gear systems transfer force through wheels, brakes, axles, and supporting components. In ideal conditions, those loads are predictable. In real-world kit aircraft use, crosswind corrections, runway imperfections, repeated training cycles, and hard landings can all increase stress on components, making aircraft landing gear materials an important design consideration.
For kit manufacturers, this creates a practical trade-off. Reducing weight can improve useful load and aircraft performance, but durability protects the customer experience and can reduce downstream support concerns. A lightweight material may look appealing on paper, but aircraft landing gear material properties such as strength, fatigue behavior, corrosion resistance, and serviceability must also support safe installation, predictable operation, inspection needs, and long-term use.
The strongest choice is not always the lightest material or the highest-strength material. It is the material that fits the load case, manufacturing method, maintenance expectations, and skill level of the end user.
When comparing aircraft landing gear material properties, kit designers should look beyond a single strength number. Materials such as 7075-T6 aluminum, 2024-T351 aluminum, 6061-T6 aluminum, heat-treated steel, cast aluminum, spun aluminum, and composites each perform differently depending on load, wear, installation, inspection, and long-term use.
Yield strength helps indicate how much stress a material can handle before it permanently deforms. For main wheels and brake assemblies, axles, brakes, and related components, this matters because bending or deformation can affect alignment, fit, and predictable operation.
7075-T6 aluminum is often discussed in aerospace because it offers high strength with relatively low weight. 2024-T351 aluminum and 6061-T6 aluminum can also be useful depending on the component, manufacturing method, and performance requirements. Heat-treated steel may be preferred where compact strength, toughness, or wear resistance is more important than weight reduction.
Landing gear components experience repeated loads over time, especially during taxiing, training, and repeated takeoffs and landings. Fatigue behavior helps determine how well materials like aluminum alloys, steel, and composites handle repeated stress cycles.
A material that performs well in a single high-load event still needs to support repeated real-world use from builders who may encounter hard landings, side loads, or uneven runway surfaces. This is where material choice, part geometry, and inspection expectations all matter.
Strength-to-weight ratio helps designers understand how much usable strength a material provides for the weight added to the aircraft. Reducing weight can help protect useful load, but the selected material still needs to be practical to manufacture, inspect, repair, and maintain.
Composites can offer strong weight-saving potential, especially when stiffness and load paths are engineered correctly. Cast aluminum and spun aluminum can support different wheel construction needs, while 6061-T6 aluminum may offer practical advantages where machinability and corrosion resistance are priorities. However, every material choice should be weighed against serviceability and builder confidence.
Different aircraft landing gear materials support different priorities. 7075-T6 aluminum may be appropriate for select high-strength applications, while 2024-T351 aluminum, 6061-T6 aluminum, heat-treated steel, cast aluminum, spun aluminum, and composites can each play a role depending on the component, load path, manufacturing method, and maintenance expectations.
For kit manufacturers, the best material is the one that balances weight, durability, serviceability, and builder confidence.
Matco ALS supports kit designers and manufacturers with wheel assemblies, brake assemblies, hydraulics, conversion and repair kits, tailwheel assemblies, and related components designed for experimental and amateur-built aircraft kits.
Reliable components help simplify kit assembly, support predictable ground performance, and reduce downstream customer frustration during the build process. This practical engineering helps manufacturers deliver cleaner installations, dependable braking, and a better builder experience.
Need help selecting the right components for your aircraft kit? Contact Matco ALS to discuss your application, configuration, and performance requirements.
