Description (English)
7075-T651 Aluminum Extruded Profile is a high-strength structural aluminum profile manufactured by hot extrusion process and heat-treated to T651 temper. As one of the strongest commercially available aluminum alloys, 7075 is the preferred choice for applications demanding maximum strength-to-weight ratio, excellent fatigue resistance, and superior machinability. The T651 temper is achieved by solution heat treatment, stress relief through controlled stretching (1-3% permanent set), and artificial aging, resulting in excellent dimensional stability and minimal distortion during subsequent machining operations. 7075-T651 extruded profiles are widely used in aerospace structural components, defense equipment, high-performance sporting goods, robotics, and precision machinery, where standard mill shapes (channels, angles, tubes, tees, zees) or fully custom-designed profiles can be supplied according to customer drawings and specifications. âš Important Note: 7075 has limited extrudability due to its high zinc content. Compared to 6xxx series (e.g., 6061), 7075 extrusion is limited to simpler cross-sections, smaller circumscribed circle diameters, and reduced length. For complex profiles, 6061 is often recommended. Manufacturing Standards: - ASTM B221 (Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes) - AMS 4154 (Aerospace Material Specification - 7075-T6/T651 Extrusion) - EN 755 / EN 12020 (European Standards) - EN 573-3 (Chemical Composition) Frequently Asked Questions Q:What is the difference between 7075-T6 and 7075-T651? Answer: 7075-T651 has additional stress relieving treatment to reduce residual stress and improve machining stability.
Size Range
- Up to ~200mm (limited by 7075 extrudability)
Grade Specification
| System | Value |
|---|---|
| Solid Bar | Up to ~200mm (limited by 7075 extrudability) |
| Hollow Tube | Up to ~200mm (limited by 7075 extrudability),≥ 1.0mm (minimum) |
| Channel | customization as per drawing |
| Angle | customization |
| I/H-Section | 10 - 5000 mm² (typical) |
| Custom Profile | Custom die per drawing |
| Material | 7075 Aluminum Alloy |
| Temper | T651 |
| 🇺🇸 UNS | A97075 |
| Product Form | Extruded Section |
| Standard | ASTM B221 / AMS 4169 |
Chemical Composition
| Element | Value |
|---|---|
| Al | Balance (87.1 - 91.4) |
| Zn | 5.10 - 6.10 |
| Mg | 2.10 - 2.90 |
| Cu | 1.20 - 2.00 |
| Cr | 0.18 - 0.28 |
| Fe | ≤ 0.50 |
| Si | ≤ 0.40 |
| Mn | ≤ 0.30 |
| Ti | ≤ 0.20 |
| Other (Each) | ≤ 0.05 |
| Other (Total) | ≤ 0.15 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 540 |
| Tensile Strength(0.2% Offset) | ≥ 460 |
| Elongation | ≥ 6 |
| Hardness, Brinell | 150HB |
Physical Properties
| Property | Unit | Value |
|---|---|---|
| Density | - | 2.81g/cm³ |
Applications
- Aerospace:Aircraft seat tracks, structural stiffeners, fuselage frames, wing ribs, helicopter rotor components,aerospace structural components
- Defense equipment:Weapon mounts, armor parts, military vehicle structural components
- Aircraft parts:Tooling rails, jigs, fixtures, assembly jigs
- Automotive (Racing):Roll cage tubing, chassis reinforcements, suspension links
- Robotics:Robot arm links, structural frames, motion components
- Sports Equipment:Bicycle frames, climbing equipment, archery risers, ski poles
- Marine (with coating):Mast sections, structural supports (requires protective coating)
- Industrial Machinery:High-stress machine parts, gear blanks, drive shafts
- Optical & Precision:Telescope mounts, instrument frames, optical bench components
- Semiconductor:Equipment frames, precision motion stages
- Precision machinery
- High strength frames