7xxx Series
Aluminum Extrusions
Ultra-High Strength Structural Aluminum Profiles
Al-Zn based aerospace and defense-grade extrusion materials
7 Series Overview
7000 series aluminum alloy is a heat‑treatable ultra‑high‑strength alloy mainly added with zinc, magnesium and copper elements
It features outstanding strength‑to‑weight ratio and excellent machinability after solution and aging treatment, ideal for high‑stress load‑bearing parts. Mainly used in industries such as aerospace, precision mold, defense equipment and high‑performance machinery.
Ultra‑high Strength
Top‑tier strength‑to‑weight performance among aluminum alloys for heavy‑load structural parts.
Good Machinability
Stable cutting performance for high‑precision machined components.
Superior Fatigue Resistance
Reliable performance under long‑term cyclic stress conditions.
7-Series Aluminum Alloys (Ultra-High-Strength Zinc Alloys)
| Alloy | Temper | Wall Thickness (mm) | Cross-sectional Area (cm²) | Circumscribed Diameter (mm) | Overall Dimensions (mm) | Standards | Core Properties | Typical Applications |
| 7A04 | T6 / T651 / H112 | 3 – 50 | 0.2 – 150 | 10 – 320 | 10 – 320 | GB/T 6892, GJB 2507A, ASTM B221M | Ultra-high strength, high rigidity, excellent load-bearing capacity | Aircraft primary structures, defense armor components |
| 7A09 | T6 / T651 / H112 | 3 – 50 | 0.2 – 150 | 10 – 320 | 10 – 320 | GB/T 6892, GJB 2507A, ASTM B221M | Balanced strength and toughness, excellent stress corrosion resistance | Aerospace rocket structures, high-load engineering components |
| 7050 | T7451 / T6 / T651 | 3 – 50 | 0.2 – 150 | 10 – 320 | 10 – 320 | GB/T 6892, GJB 2507A, AMS QQ-A-200B, ASTM B221M | Excellent fatigue resistance, outstanding stress corrosion resistance | Commercial aircraft structures, satellite systems |
| 7075 | T6 / T651 / T7351 | 3 – 50 | 0.2 – 150 | 10 – 320 | 10 – 320 | GB/T 6892, GJB 2507A, AMS QQ-A-200B, ASTM B221M | Ultra-high strength, stable mechanical performance, military-grade alloy | Defense equipment, UAV structures, high-end tooling |
Industry
Application scenario
7000-series alloys feature ultra-high strength for aerospace load parts, landing gears and military components. They are also adopted for racing frames, high-end sports gear and heavy-duty molds.
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