Material datasheet · Aerospace aluminum (Zn-Mg-Cu)
Aluminum 7075-T6
UNS A97075 · T6 / T651 — solution treated, stress-relieved by stretching, aged
High-strength aerospace aluminum. ~85% higher strength than 6061. Standard for primary aircraft structures.
Chemical composition
Nominal % by weight.
| Element | % by wt |
|---|---|
| Al | Bal. |
| Zn | 5.1–6.1 |
| Mg | 2.1–2.9 |
| Cu | 1.2–2.0 |
| Cr | 0.18–0.28 |
Applicable specifications
AMS / ASTM / MIL.
- AMS 4045 (sheet/plate)
- AMS-QQ-A-225/9
- ASTM B221
- AMS 4126 (forgings)
Solution 870°F, quench, age 250°F × 24 hr.
Machining guidance
CNC parameters and tooling.
Polished carbide; positive rake; resharpened tools work fine
Easier to chip-control than 6061 thanks to higher strength. Watch for SCC if threading exposed parts in salt fog.
Stock & cost
Forms and Q1 2026 pricing.
- Type II anodize
- Type III hardcoat (preferred for wear)
- Chemical conversion
- Alodine
Typical applications
Where 7075-T6 is the right pick.
- Primary aircraft structures
- Weapon platforms
- High-stress fittings
- Bicycle frames
- Mountaineering hardware
Alternative materials
Substitute or upgrade options.
- 7050 (thicker sections)
- 2024 (better fatigue)
- Ti-6Al-4V (lighter at higher cost)
True Precision Machining · Buellton, CA
Machine your part in 7075-T6.
5-axis CNC · ISO 9001 · AS9100 · ITAR · CMMC-compliant · DFARS-compliant supply chain. AS9102 FAI on aerospace.
Technically reviewed by the True Precision Machining engineering team · Last reviewed June 2026
Standards referenced: AMS 4045 (sheet/plate), AMS-QQ-A-225/9, ASTM B221, AMS 4126 (forgings)
Keep exploring
Related tools & references
Speeds, feeds, tooling, and chip strategy.
SFM, RPM, and feed rate for this material.
Compare alloys by strength, weight, temperature, and cost.
Estimate part weight from 7075-T6 stock.
How it stacks up against its alternatives.
Aerospace specs that call out this alloy.