01
Thin walls bow after machining
5052-H32 work-hardens instead of breaking cleanly. Heavy roughing loads the wall, and the part springs out of tolerance once it leaves the vise. By the time you measure it, the flatness is already gone.
5052 Aluminum Alloy
Precision CNC Machined 5052 Aluminum Alloy Parts
5052 machines into thin walls, welded tanks and corrosion-prone housings. We hold ±0.005 mm on 127 CNC machines, from one prototype to 10,000+ parts, with cutting strategy matched to the alloy temper.
±0.005 mm toleranceRa 0.2–0.8 μm finishNo MOQ12-hour quote
15 yearsMachining since 2011
127High-precision CNC machines
±0.005 mmAchievable tolerance
99.99%Qualification rate
Common problems
Does any of this sound familiar?
5052 has a narrow window. Miss it and the part fails after machining, not during.
02
Welded seams crack at the joint
5052 welds well, but only if the machined land and the filler choice match. A sharp corner at the weld toe concentrates stress. Fatigue cracks start there, often in the first thermal cycle.
03
Anodize comes back blotchy
5052 is not 6061. Alloy segregation and the wrong etch time leave a patchy, dull coating. Color matching fails, and the housing looks used before it ships.
04
Bent flanges measure wrong
5052 springs back more than 6061. A brake operation that is not compensated leaves flange angles off by a degree or more, and the assembly will not close.
How we run it
Machining strategy built around 5052, not against it
Temper, tooling and workholding picked before the first chip.
Temper and tool path
Match the cutting load to the temper
5052 comes in H32, H34 and O. Each one behaves differently at the spindle. H32 is partially work-hardened and will grab a dull tool; O temper is soft and gums up unless the feed stays high. We set speeds, feeds and depth of cut from the temper on your cert, not from a generic aluminum chart.
For thin-wall parts we rough with a larger radial engagement and finish with a light, high-speed pass. That keeps heat in the chip instead of the wall. Wall thickness down to 0.8 mm is routine. Below that we discuss it, because chatter risk rises fast.
- 1Temper-specific parametersH32, H34 and O each get their own feed and speed set.
- 2Thin-wall sequenceRough heavy, finish light, control heat in the chip.
- 3WorkholdingSoft jaws and vacuum fixtures reduce clamping distortion.
Welding and finishing
Prep the weld joint, then prep the surface
When a bracket needs a welded seam, the joint geometry is part of the machining job. We cut a land and a controlled root gap, and we leave the weld toe radiused so stress does not pile up at a sharp corner. If you specify 5052 filler, we follow it; if you leave it open, we will say what we would run.
Finishing is where 5052 gets underestimated. Anodizing needs a tighter etch window than 6061 because of how the alloy segregates. We bead blast or brush first to even out the surface, then send it to a line that runs 5052 regularly. Hardcoat is possible, though color consistency is harder than on 6061.
- 1Joint geometryRoot gap and toe radius cut into the part, not added later.
- 2Etch controlShorter etch window for anodize on 5052.
- 3Surface prepBead blast or brush before coating for an even look.
Alloy selection
When 5052 is the right call
Read this before you lock the material on your print.
| Property | 5052 | 6061-T6 | Pick 5052 when |
|---|---|---|---|
| Corrosion resistance | Excellent, marine grade | Good | Salt spray or wet service |
| Weldability | Excellent | Fair, loses temper | Part gets welded |
| Machinability | Good | Very good | Thin walls, not heavy stock removal |
| Strength | Moderate, H32 | Higher, T6 | Stiffness matters more than yield |
| Anodize appearance | Needs tighter etch control | More forgiving | Clear or dark, not color match |
| Formability | Excellent | Limited | Part gets bent after machining |
What we machine
5052 part families we run every week
One shop for milling, turning, sheet work and finishing.
01
Enclosures and chassis
Thin-wall housings, control boxes and rack panels. Wall sections down to 0.8 mm with flatness held across the face. Bead blast or anodize to finish.
02
Fluid and fuel tanks
Welded 5052 tanks and manifolds. We cut the weld prep into the part so the joint closes cleanly, then leak-test before shipment.
03
Brackets and mounting plates
Formed and machined brackets for marine, EV and industrial frames. Springback compensated on bends, holes drilled after forming.
04
Heat exchangers
Manifold blocks and end plates with O-ring grooves and threaded ports. Surface finish held for seal contact.
05
Marine hardware
Deck fittings, brackets and housings for saltwater exposure. 5052 resists pitting where 6061 would need a coating.
06
Panels and covers
Laser-cut and machined covers with countersinks, PEM inserts and laser marking. Minimum character height 1.5 mm.
Scope and limits
What we can hold on 5052
Numbers we can commit to before you send the file.
| Item | Capability | Notes |
|---|---|---|
| Tolerance | ±0.005 mm | On critical features, not every dimension |
| Surface finish | Ra 0.2–0.8 μm | Fine finish on sealing faces |
| Standard finish | Ra 1.6–3.2 μm | As-machined, most non-sealing surfaces |
| Maximum part size | 4,000 mm | Up to 4,000 × 400 × 150 mm |
| Wall thickness | 0.8 mm | Below this, review for chatter risk |
| Lead time | 3–5 days | After drawing release and material in house |
Why GreatLight
What you get on the shop floor
Numbers, not adjectives.
15Y
15 years in aluminum
Machining aluminum since 2011. 5052 is a standard material here, not a special order. The parameters are already dialed in.
127
127 CNC machines
16 simultaneous 5-axis centers, 12 four-axis mills, 27 three-axis machines and 16 mill-turn centers. Capacity for one-offs and production runs.
±0.005
Tight tolerance
±0.005 mm on critical features. 100% inspection before shipment, with reports on request.
24H
Fast production start
Quotation and free DFM analysis within 12 hours. Production can start within 24 hours of drawing release.
ISO
Four certifications
ISO 9001:2015, IATF 16949:2016, ISO 13485:2016 and ISO 27001:2022. Your files stay confidential.
0 MOQ
No minimum order
From one prototype to 10,000+ part runs. Same process, same inspection, whether you order one or ten thousand.
7,600 m²Manufacturing space
150Technicians
3Wholly-owned plants
<2%Historical late-delivery rate
Industry requirements
What these sectors need and how we deliver
Automotive & EV
Battery trays, brackets and housings with PPAP documentation available.
- PPAP docs
- IATF 16949
- 3–5 day ship
Marine & offshore
Deck hardware and pump housings that see salt spray daily.
- Salt spray
- Corrosion resistant
- Welded seams
Industrial machinery
Control chassis, covers and manifold blocks for process equipment.
- ±0.005 mm
- 100% inspection
- Ra 0.8 μm
Electronics
RF shields, heat spreaders and enclosures with tight flatness.
- No MOQ
- 12-hour quote
- Conductive anodize
FAQs
Questions engineers ask about 5052
Can you hold ±0.005 mm on 5052 thin walls?
On critical features, yes, if the wall is 0.8 mm or thicker and the part is fixtured properly. Thin walls move with clamping force, so the workholding matters as much as the tool path.
Below 0.8 mm we will review the drawing first. Chatter risk climbs and we would rather tell you before quoting than after.
How does 5052 compare to 6061 for machining?
6061-T6 machines cleaner and holds a better as-machined finish. 5052 is gummier and work-hardens, so it needs sharper tools and different feeds.
Pick 5052 when corrosion resistance, weldability or formability matter more than strength. Pick 6061 when you need stiffness and a clean machined look.
Can 5052 be anodized?
Yes, clear and hardcoat both work. The etch window is tighter than 6061 because of alloy segregation, so a line that runs 5052 often gets better results.
Color matching is harder. For cosmetic parts we usually recommend bead blast or brush, then clear anodize rather than a colored match.
What filler should we specify for welded 5052?
5052 filler is the common choice for 5052-to-5052 joints. If the mating part is a different alloy, the filler choice changes.
Send the joint detail with the drawing. We will cut the root gap and toe radius into the part so the weld closes cleanly.
Do you provide material certs and inspection reports?
Yes. Mill certs come with the material. Inspection reports are available on request, covering the dimensions you flag on the drawing.
100% inspection happens before shipment, with raw material check, in-process monitoring and final inspection.
Is there a minimum order quantity?
No. We run from one prototype to 10,000+ parts. The process and inspection are the same at either end.
For a single prototype, expect the same 12-hour quote and 3–5 day ship window once the drawing is released.
What is the maximum part size in 5052?
Up to 4,000 mm in the long dimension, with travel of 4,000 × 400 × 150 mm on the large machines.
Larger envelopes are available on medium and compact machines depending on the feature layout.
How do you keep my drawing confidential?
Uploads are secure and confidential. We hold ISO 27001:2022 and can sign an NDA on request before you send files.
If you need the NDA first, say so and we will send it before the quote.
Send your 5052 drawing, get a quote in 12 hours
Free DFM analysis with every quote. No minimum order. 100% inspection before shipment.
12-hour quote100% inspectionNo MOQNDA on request
