Aircraft Landing Gear Forgings

Aircraft landing gear forgings take the landing loads that bring aircraft to terra firma - the structural members that absorb the impact of touchdown and support the aircraft on the ground. These are among the most demanding forgings in aerospace: high loads, high fatigue requirements, zero tolerance for failure. 4330 and 4340 alloy steel are the primary materials for landing gear - the high strength and toughness of these alloys handles the impact loads and cyclic loading that landing gear experiences. 7075-T6 and 2024-T3 aluminum forgings serve the lighter structural members where aluminum's weight advantage matters. Forgings are produced to AS9100 quality system requirements with NADCAP-accredited heat treatment. Every heat batch is documented with material test reports. Finished forgings are inspected by ultrasonic methods.

A landing gear strut on a wide-body aircraft can see impact loads in the millions of pounds during touchdown. The forging must not only handle those loads without permanent deformation, but also survive the fatigue of hundreds of thousands of landings over its service life. That is why the material, forging process, and inspection requirements are all specified at this level of rigor.

• AS/EN/JISQ 9100 - Aerospace quality management for flightcritical and structural parts
• NADCAP - Accredited special processes including heat treatment, NDT, and surface treatment
• DFARS / ITAR - Compliant supply chain for defense and space applications
• Boeing DMS / Airbus SP - Customerspecific requirements documentation available
• CMM Inspection - Coordinate measuring for complex geometries and tight tolerances
• Surface Roughness Measurement - Ra, Rz, and Rt charting with every inspection report
• Passivation / Electropolishing - ASTM A967 procedures for corrosion resistance
• Material Traceability - Heat number tracking from raw material to finished part

• Billet Heating - Precision heating to forging temperature with temperature monitoring
• Forging - Closed-die, open-die, or ring rolling to near-net shape
• Trimming / Piercing - Flash removal and bore operations
• Heat Treatment - Through-hardening, case-hardening, or age-hardening as required
• Finishing Machining - CNC machining, grinding, or super-finishing to final dimensions
• Surface Treatment - Anodizing, plating, or shot peening as specified
• Inspection & Testing - Dimensional check, hardness testing, surface inspection
• Cleaning & Packaging - Degreasing, rust prevention, and protective packaging

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