2024 is a copper-bearing aerospace aluminum, strong and fatigue resistant. It machines much like 6061 and 7075 — fast surface speeds, sharp tools, and attention to chip clearing and built-up edge.
Key properties
| Property | Typical value |
|---|---|
| Density | 0.100 lb/in³ (2.78 g/cm³) |
| Hardness | ~120 HB |
| Tensile strength (T3) | ~70,000 psi (483 MPa) |
| Machinability | Excellent |
| Composition | Al with ~4.4% Cu |
Cutting speeds
| Operation | HSS (SFM) | Carbide (SFM) |
|---|---|---|
| Milling | 200 – 300 | 600 – 1000 |
| Turning | 250 – 350 | 500 – 900 |
| Drilling | 150 – 250 | 350 – 550 |
Convert to RPM: RPM = (SFM × 3.82) / cutter diameter. Use the Feeds & Speeds calculators.
Tooling and tips
- 2–3 flute, uncoated or ZrN carbide, high helix for clean chip evacuation.
- Flood or mist coolant to flush chips and stop built-up edge.
- Often sold alclad for corrosion resistance; the soft cladding machines easily.
See Cutting Speeds for Aluminum and the full Feeds and Speeds Chart.