Common alloys
6061, 7075, 2024, 5052, and drawing-specified materials
Quick technical answer
Which aluminum alloy should buyers choose for CNC machining?
6061 is a common starting choice for general machined parts because it balances machinability, strength, availability and anodizing response. 7075 is considered when higher strength is required, but alloy choice must also account for corrosion, finish, cost and the drawing requirements.
| Requirement | Practical guidance |
|---|---|
| Best fit | 6061 for general brackets, housings and fixtures; 7075 for higher-strength parts after engineering and finish review. |
| Tolerance focus | Identify thin walls, large flat areas, deep pockets and final dimensions that may change after anodizing. |
| Inspection | Check critical dimensions after stress-releasing operations or finishing when deformation or coating buildup matters. |
| RFQ input | Alloy and temper, drawing revision, quantity, cosmetic faces, anodizing or coating requirements and final dimensions. |
Technical review: XHR Precision Machining
Key Service Details
For a practical quotation, send your drawing, material, quantity, tolerance requirements, and surface finish. Our team will review manufacturability before quoting.
Lightweight parts
Good strength-to-weight ratio for machine and robot components
Finish options
Anodizing, sandblasting, polishing, brushing, and plating support
Flexible volume
Samples, pilot runs, and repeat production
Aluminum Machining Capability
Structural Parts
Frames, plates, brackets, supports, adapters, and custom machine structures.
Precision Housings
Electronic housings, covers, sensor mounts, and CNC machined enclosures.
Cosmetic Surfaces
Parts that need deburring, polishing, bead blasting, anodizing, or color finish.
Complex Features
Pockets, thin walls, threaded holes, tight locating features, and multi-face parts.
Common Buyer Requirements
6061 Aluminum
A practical choice for general structural parts and many machined components.
7075 Aluminum
Used when higher strength is required for demanding lightweight parts.
Anodized Finish
Clear, black, and color anodizing can be arranged for functional or appearance needs.
Inspection
Dimensional checks for critical features before packing and shipment.
Typical Applications
- Automation equipment frames, plates, and brackets
- Robot parts and lightweight assemblies
- Electronic housings, covers, and custom panels
- Precision jigs, fixtures, and machine components
Factory and Parts Gallery
Selected workshop and part images from XHR's website media library. We will continue adding more project photos as the site grows.
Aluminum CNC Machining Notes for Overseas Buyers
Aluminum parts are common in automation equipment, fixtures, robotics, electronics, and lightweight structures. The right alloy, finish, and tolerance plan can reduce cost while keeping the part stable in assembly.
Common Aluminum Grades
6061 is widely used for general structural parts and fixtures. 7075 is selected when higher strength is needed. 6063 may be used for profiles and appearance-focused parts. Final selection should match function, finish, and cost target.
Machining Considerations
Aluminum usually machines efficiently, but thin walls, deep pockets, large flat plates, and cosmetic surfaces still need careful clamping and toolpath planning to reduce deformation and visible marks.
Surface Finish Options
Clear anodizing, black anodizing, color anodizing, polishing, bead blasting, and conversion coating can be arranged depending on appearance, corrosion resistance, and assembly requirements.
Inspection Focus
For aluminum fixtures and automation parts, buyers should mark hole positions, flatness, thread depth, mating faces, and any post-anodizing dimensions that remain critical.
Aluminum Parts RFQ Checklist
- Required aluminum grade or acceptable alternatives
- Anodizing or other surface finish requirements
- Critical threaded holes, locating holes, and mating faces
- Thin-wall or cosmetic surface concerns
- Prototype quantity and expected repeat batches
- Packing requirements to prevent scratches
Send these details through the RFQ page so XHR can review machining feasibility, quote more accurately, and reduce production risk before cutting material.
Related CNC Machining Services
Explore related service pages to understand our material, process, and application coverage.
RFQ & production guidance
Use this section to match drawings, tolerance requirements and delivery targets before sending an RFQ.
Best-fit parts
6061, 7075 and similar aluminum parts including brackets, housings, plates, fixtures and lightweight components.
Drawing details to include
Share 2D drawings, 3D files, material grade, quantity, tolerance notes, surface finish and inspection requirements.
Tolerance and inspection focus
Focus on flatness, hole position, anodizing allowance, thread strength and cosmetic surface protection.
Cost and lead-time drivers
Setup time, programming complexity, material availability, fixture needs, surface treatment and inspection depth usually drive price and delivery.
FAQ
Which aluminum grade should I choose?
6061 is common for general structural parts. 7075 is better when higher strength is required. Final selection depends on function, finish, and cost target.
Can you supply anodized aluminum parts?
Yes. We can arrange anodizing and other finishing processes depending on your functional and appearance requirements.
Can you machine thin-wall aluminum parts?
Yes, but thin-wall parts need careful review of tolerance, deformation risk, and fixture strategy before quoting.
Aluminum CNC Machining Buying Notes
Aluminum is often chosen for lightweight precision parts, prototypes, enclosures, fixtures, plates, and robotics hardware.
Common grades
6061 for general precision parts, 7075 for higher strength, and 6063 for selected profiles or appearance needs.
Typical parts
Enclosures, brackets, plates, housings, panels, fixture blocks, heat sink bodies, and robot mounts.
Finishing
Anodizing, bead blasting, brushing, polishing, chromate conversion, or other finish options after review.
Design focus
Wall thickness, deep pockets, threaded holes, sharp internal corners, and cosmetic faces.
Buyer Checklist and Inspection Focus
- Confirm which surfaces are cosmetic and which are functional.
- Consider finish thickness when dimensions are critical after anodizing.
- Mark flatness, parallelism, hole position, and thread requirements clearly.
- Use practical radii and tool-access design to reduce machining cost.
Clear drawings and inspection notes help XHR quote accurately, plan machining steps, and protect critical features before shipment.
Useful Related Pages
Related Long-Tail CNC Machining Pages
Request a Quote for Custom CNC Parts
Send drawings and requirements to XHR. We will review the machining process, material, tolerance, finishing, delivery, and packing needs.
Aluminum Cluster
Aluminum CNC machining, anodizing and alloy selection
Aluminum projects often need alloy selection, appearance control, anodizing requirements and tight tolerance review before quotation.
6061 aluminum CNC machiningGood machinability for brackets, plates, fixtures and housings.7075 aluminum CNC machiningHigher strength for lightweight structural parts and robot hardware.Anodized aluminum machiningPlan machining allowances, masking and cosmetic surfaces.Hard anodized partsImprove wear resistance and surface protection on aluminum parts.