3Q MACHINING has a good experience for machining quality parts from Aluminum alloy 7075. We can machine intricate parts on our CNC Lathe machines and CNC turning centers.
Aluminum alloy 7075 is the strongest of available aluminum alloys, excellent for jobs that require extreme strength while remaining lightweight. It possesses great cracking resistance and increases in strength as temperature decreases, making it ideal for the aerospace industry.
Note: Aluminum 7075 can be forged and heat treated, but is not ideal for welding. 7075 can be heat treated, annealed, and aged. It is not as ideal for anodizing compared to Aluminum 6061 and may produce a yellowish tint when clear anodizing.
Aluminum 7075 Machining Capability
- CNC Lathe
- CNC Milling
- CNC Turning
Aluminum 7075 Applications
- Aircraft components
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Common Material Comparison
| Type | General Characteristics | Alloy | Common Applications | Tolerances for 1/2″ Dia. |
| Steel | Designed for excellent machinability. Case hard only | 12L14 | Endless commercial products; probably more pounds used in turned products than any other material | Cold drawn |
| 0 | ||||
| Stainless Steel | Designed for machining, non-magnetic | 303 | Electronic hardware, automotive, aerospace, medical instruments, and many applications requiring corrosion resistance | Cold finished |
| +/- .002 | ||||
| Brass | Strength, corrosion and wear resistance, and excellent machinability | C35300 | Well suited for parts with knurling or threading | +/-.0015 |
| Aluminum | Designed for machining | 2011 | Electronic hardware, endless commercial products | Cold finish |
| +/-.0015 | ||||
| Titanium | High strength, light weight, good bio-compatibility | Ti-6Al-4VEli | Medical implants | Ground & polished |
| +/-.002 |
Aluminum 7075 Characteristics
Characteristic | Appraisal |
| Workability | Poor |
| Machinability | Fair |
| Strength | High |
| Weldability – Brazability | Poor |
| Corrosion – Resistance | Average |
Note: This alloy is generally solution heat treated to further enhance its high-strength properties.
Aluminum 7075 Chemistry Information
| Element | % Present |
| Si | 0.12 |
| Fe | 0.15 |
| Cu | 2-2.6 |
| Cr | 0.04 |
| Mg | 1.0-2.6 |
| Mn | 0.1 |
| Ti | 0.15max |
| Zn | 5.7-6.7 |
| Zr | 0.08-0.15 |
| Al | – |
Aluminum 7075 Mechanical Information: Physical Properties
| Density | 0.1 lb/in3 |
| Ultimate Tensile Strength | 76 ksi |
| Yield Tensile Strength | 68 ksi |
| Fatigue Strength | 30 ksi |
| Shear Strength | 44 ksi |
| Shear Modulus | 3,800 ksi |
| Hardness Rockwell | Brinell | B84 | 140 |
| Elongation at Break Percentage | 10% |
| Modulus of Elasticity | 10,400 ksi |
| Poisson’s Ratio | 0.32 |
| Machinability Percentage | 70% |
| Melting Point | 910-1,1165 °F |
| Specific Heat | 2.1 x 10^-1 BTU/lb-°F |
| Thermal Conductivity | 1,090 BTU-in/hr-ft^2-°F |
| Electrical Conductivity | 35% IACS |
