So you're designing a part and you've settled on CNC machining. Great choice. It's the go-to for precision, strength, and customizability.
Why These Two Metals Are Machining Superstars
First off, both aluminum and brass are known as "free-machining" metals. This is machinist-speak for "they're a dream to work with." They cut cleanly, don't wear out tools too quickly, and produce great finishes. That's why you see them everywhere, from prototype labs to high-volume production floors.
Aluminum: The Lightweight All-Around Champion
Think of aluminum as the versatile workhorse. It's the most commonly CNC'd metal for a reason.
1.Key Properties:
- Lightweight: It's about one-third the weight of steel, making it perfect for anything that moves or needs to be lifted.
- Strong (for its weight): When you need strength without the heft, aluminum delivers.
- Corrosion Resistant: It forms a protective oxide layer, so it won't rust. This is huge for outdoor or marine use.
- Easy to Finish: It takes anodizing beautifully (for color and extra hardness) and can be polished to a mirror shine.
2.Best For:
- Aerospace components (drones, aircraft fittings)
- Automotive parts (brackets, housings)
- Consumer electronics (laptop chassis, heat sinks)
- Robotics and automation (frames, arms)
Brass: The Durable, Detailed Performer
Brass is like the precision craftsman. It's denser and has a unique set of properties that make it indispensable for specific jobs.
1.Key Properties:
- Natural Lubricity: It's naturally slippery. Parts made from brass have low friction and wear beautifully against other metals.
- Corrosion Resistant: It's highly resistant to water and saltwater corrosion, hence its use in marine hardware.
- Electrical & Thermal Conductivity: It's an excellent conductor, second only to copper on the conductivity scale.
- Aesthetic Appeal: That classic gold-like look screams quality and is often used for decorative pieces, fittings, and musical instruments.
2.Best For:
- Plumbing fittings and valves (doesn't rust and is easy to thread)
- Electrical components (terminals, connectors, sockets)
- Decorative hardware (door handles, knobs, architectural accents)
- Gears and bushings (thanks to its low friction)
CNC Turning & Milling: How They Work With Each Metal
Both metals excel in CNC processes:
- CNC Milling: Perfect for creating complex 3D shapes, pockets, and contours from a block of material. Aluminum's lightness makes it ideal for large milled parts.
- CNC Turning: Ideal for creating cylindrical, conical, or spherical parts (like shafts, nozzles, or connectors). Brass's free-cutting nature makes it a star on a lathe, producing incredibly smooth finishes with fine detail.
| | CNC Turning, CNC Milling, Laser Cutting, Bending, Spining, Wire Cutting, Stamping, Electric Discharge Machining (EDM), Injection Molding,3D Printing,Rapid Prototype,Moulds etc. |
| | Aluminum: 2000 series, 6000 series, 7075, 5052, etc. |
| Stainlesss steel: SUS303, SUS304, SS316, SS316L, 17-4PH, etc. |
| Steel: 1214L/1215/1045/4140/SCM440/40CrMo, etc. |
| Brass: 260, C360, H59, H60, H62, H63, H65, H68, H70, Bronze, Copper |
| Titanium: Grade F1-F5 |
| Plastic: Acetal/POM/PA/Nylon/PC/PMMA/PVC/PU/Acrylic/ABS/PTFE/PEEK etc. |
| | Anodized, Bead Blasted, Silk Screen, PVD Plating, Zinc/Nickl/Chrome/Titanium Plating, Brushing, Painting, Powder Coated, Passivation, Electrophoresis, Electro Polishing, Knurl, Laser/Etch/Engrave etc. |
| | ±0.002 ~ ±0.005mm |
| | Min Ra 0.1~3.2 |
| CERTIFICATE | ISO9001:2015,AS9100D,ISO13485:2016,ISO45001:2018,IATF16949:2016,ISO14001:2015,ROSH,CE etc. |
FAQ
1. Are you a manufacturer or a trading company?
We are a factory located in Shenzhen, China, with 20 years of rich experience,
covering 6000 square meters. Complete facilities, including 3D quality inspection equipment, ERP system and 40 machines. If necessary, we can provide you with material certificates, sample quality inspection and other reports.
2. How to get a quote?
Detailed drawings (PDF/STEP/IGS/DWG...), including quality, delivery date, materials, quality, quantity, surface treatment and other information.
3. Can I get a quotation without drawings?
Can your engineering team draw for my creativity? Of course, we are also glad to receive your samples, pictures or detailed size drafts for accurate quotation.
4. Can you provide samples before mass production?
Of course, the sample fee is necessary. If possible, it will be returned during mass production.
5. What is the delivery date?
Generally, the sample lasts for 1-2 weeks and the batch production lasts for 3-4 weeks.
6. How do you control quality?
(1) Material Inspection - Check material surfaces and approximate dimensions.
(2) First inspection of production - ensure
critical dimensions in mass production.
(3) Sampling inspection - check the quality before delivery to the warehouse.
(4) Preshipment inspection - 100% inspection by QC assistant before shipment.
7. After sales service team
If you have any problems after receiving the product, you can provide feedback through voice call, video conference, email, etc. within one month. Our team will provide you with solutions within a week.
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