What aluminum grades do you machine?

We machine all common aluminum alloys including 6061-T6, 7075-T6, 2024-T3, 5052-H32, and MIC-6 tooling plate. 6061-T6 is our most frequently machined grade and is suitable for the majority of general engineering applications.

Can you anodize aluminum parts after machining?

Yes. We offer clear anodizing, hard anodizing, and color anodizing as post-machining services. Anodizing improves corrosion resistance and surface hardness. Please specify anodizing requirements when requesting a quote.

What is the best aluminum grade for CNC machining?

Aluminum 6061-T6 is the most commonly machined grade and is suitable for most applications. It offers a good balance of strength, machinability, weldability, and cost. 7075-T6 is chosen when higher strength is needed, such as in aerospace components.

Aluminum CNC Machining — 6061, 7075, Custom Parts

Why Aluminum for CNC Machining?

Aluminum is the most widely machined metal for good reason. It offers an excellent strength-to-weight ratio, machines at high speed with clean results, accepts surface treatments well, and is cost-effective for both prototypes and production runs.

At EKINSUN, aluminum parts make up the majority of our machining work. We have refined our tooling, speeds, and finishing processes specifically for aluminum, which means faster lead times and better surface quality compared to harder metals.

Aluminum Grades We Machine

6061-T6

Mechanical Properties Comparison

Grade	Tensile Strength	Yield Strength	Density	Best For
6061-T6	310 MPa	276 MPa	2.70 g/cm³	General use
7075-T6	572 MPa	503 MPa	2.81 g/cm³	High strength
2024-T3	483 MPa	345 MPa	2.78 g/cm³	Fatigue resistance
5052-H32	228 MPa	193 MPa	2.68 g/cm³	Corrosion resistance

Surface Finishing Options for Aluminum

Clear Anodizing (Type II) — Improves corrosion resistance, keeps natural aluminum appearance
Hard Anodizing (Type III) — Thick, extremely hard oxide layer for wear resistance
Color Anodizing — Black, red, blue, gold and other colors available
Bead Blasting — Uniform matte finish, hides machining marks
Powder Coating — Durable painted finish in any RAL color
As-Machined — Standard machined finish, no additional treatment

Typical Aluminum Parts We Machine

Aerospace brackets, housings, and structural components
Electronic enclosures and heat sinks
Automotive lightweight structural parts
Drone and UAV frames and components
Medical device housings
Bicycle and sporting equipment components
Industrial automation parts and fixtures
Custom replacement parts for legacy machinery

Frequently Asked Questions

We machine all common aluminum alloys: 6061-T6 (most popular), 7075-T6 (high strength), 2024-T3 (fatigue resistant), 5052-H32 (marine grade), and MIC-6 tooling plate. Other alloys available on request.

Yes. We offer clear anodizing (Type II), hard anodizing (Type III), and color anodizing. Specify your anodizing requirements when requesting a quote and we will include it in the pricing.

For most general mechanical and structural parts, 6061-T6 is the right choice — it is strong, machinable, weldable, and cost-effective. If you need maximum strength (aerospace, high-load), choose 7075-T6. For marine or outdoor use, 5052-H32 offers the best corrosion resistance. Not sure? Describe your application and we'll recommend.

Yes. We accept hand-drawn sketches, photos, and rough dimensions. Our engineers convert your input to CAD, send it for your approval, then machine the parts. No CAD software required.

Aluminum CNC Machining