7075-T6 Aluminum (UNS A97075) is a good-to-machine material that we run regularly for export customers. It has a density of 2.81 g/cm3, a tensile strength of 572 MPa and a typical hardness of HB 150. Those numbers make it the right choice for aerospace ribs and drone arms, and a poor choice when cost or corrosion resistance matters more than mechanical performance.
On our machines we hold +/-0.01 mm on turned and milled features and reach Ra 0.8 um where the drawing calls for it. Standard lead time for 7075-T6 Aluminum parts is 3-7 working days, including material procurement, machining and any finishing operation you specify.
7075-T6 Aluminum: key properties
| Property | Value |
|---|---|
| UNS / designation | A97075 |
| Density | 2.81 g/cm3 |
| Tensile strength | 572 MPa |
| Hardness | HB 150 |
| Machinability | Good |
| Suggested cutting speed (carbide) | 250-450 m/min |
| Relative material cost | 3 of 5 |
Machining 7075-T6 Aluminum: what to plan for
- Stress corrosion in humid service
- Not weldable
- Tool wear 2x vs 6061
Cutting speed for 7075-T6 Aluminum with carbide tooling sits around 250-450 m/min. Going faster burns the edge; going much slower causes rubbing and a poor surface. Air blast or flood coolant both work, but chip evacuation must be positive. If your part has thin walls or a lot of stock to remove, say so in the RFQ — we plan roughing, stress relief and finishing as separate operations when the geometry demands it.
Parts we machine in 7075-T6 Aluminum
- Aerospace ribs
- Drone arms
- Bicycle stems
- Mould cores
- High-load fittings
Most 7075-T6 Aluminum work arrives as 2D drawings with a mix of critical and non-critical features. Loosening tolerance on the non-critical ones is the fastest way to cut cost, and we will tell you which features those are before we quote.
Tolerances, finish and lead time
| Item | Capability |
|---|---|
| General tolerance | +/-0.01 mm |
| Achievable surface finish | Ra 0.8 um |
| Minimum wall thickness | 0.8 mm (aluminium) / 1.0 mm (steel and stainless) |
| Typical lead time | 3-7 working days |
| Prototype quantity | 1 piece |
| Production quantity | 10 to 50,000 pieces |
Frequently asked questions
What is the lead time for 7075-T6 Aluminum parts?
Standard is 3-7 working days from drawing release, assuming the material is in stock. Exotic grades and cast forms can add 5 to 10 days. Finishing such as anodizing or plating adds 3 to 5 days.
What tolerance can you hold in 7075-T6 Aluminum?
+/-0.01 mm is routine on turned and milled features. Tighter than that is possible on specific features by grinding or lapping, but it is quoted separately because it changes the process.
Do you keep 7075-T6 Aluminum in stock?
We hold common sizes of 7075-T6 Aluminum and buy mill-certified stock for everything else. Material certificates are supplied with the parts on request.
Can you supply 7075-T6 Aluminum parts with a certificate of conformity?
Yes. We issue a dimensional report, a material certificate and a certificate of conformity as standard for production orders, and full PPAP or AS9102 paperwork when the programme requires it.
Related pages
- Materials — the full index for this section.
- 5052 Aluminum CNC Machining for Sheet and Enclosure Parts
- 6082 Aluminum CNC Machining (EU Equivalent of 6061)
- 6061 Aluminum CNC Machining: Specs, Tolerances, Cost
- 2024 Aluminum CNC Machining: High-Strength Alloy Guide
- Instant CNC quote
- Tolerance quick reference
- Frequently asked questions
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