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Aluminum 5052-H32
Aluminum 2024-T4 is the premier aerospace-grade aluminum alloy, renowned for its exceptional fatigue strength and excellent damage tolerance. With copper as the primary alloying element, 2024-T4 achieves high strength through natural aging after solution heat treatment. Its superior fatigue performance — among the highest of all aluminum alloys — makes it the material of choice for aircraft wing skins, fuselage panels, and structural components where resistance to crack propagation and cyclical stress is mission-critical.
Mechanical Properties
Density: 2.68 g/cm³
Tensile Strength: 228 MPa
Yield Strength: 193 MPa
Elongation at Break: 12%
Shear Strength: 138 MPa
Fatigue Strength: 115 MPa
Hardness (Brinell): 60 HB
Modulus of Elasticity: 70.3 GPa
Thermal Conductivity: 138 W/m·K
Melting Point: 607–650°C
Coefficient of Thermal Expansion: 23.8 ×10⁻⁶ /°C
Electrical Conductivity: 35% IACS
Advantages
- Outstanding corrosion resistance — exceptional resistance to marine atmospheres, saltwater, and alkaline environments; outperforms 6061 in chloride-rich conditions
- Excellent formability and bendability — H32 temper allows complex shapes without cracking; ideal for sheet metal fabrication and bending operations
- Superior weldability — compatible with all standard welding methods (MIG, TIG, spot welding) without post-weld heat treatment
- Good fatigue resistance — performs well under cyclic loading, particularly in marine and transportation applications
Machining & Manufacturing
| Parameter | Specification | Notes |
| Cutting Speed | 800–1,500 SFM (245–460 m/min) | Avoid excessively low speeds to prevent BUE formation |
| Feed Rate | 0.005–0.018 ipt (0.13–0.46 mm/rev) | Consistent feed rate prevents work hardening and improves surface finish |
| Tooling | Carbide tooling recommended for production runs | Polished flutes reduce BUE tendency; AlTiN coating prolongs tool life |
| Coolant | Water-soluble cutting fluid with good lubricity | Flood cooling is recommended; ensure coolant fully reaches the cutting zone to avoid workpiece adhesion |
| Chip Control | / | Produces gummy, continuous chips. Adopt positive rake geometry, chip breakers and sufficient clearance angles. Low feed rate for H32 temper may cause material smearing |
| Difficulty Level | Moderate | Sharper tools and higher cutting speeds are required. BUE control is the main machining challenge |
Common Applications
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