Looking for reliable Chemical Etching Copper? VT machining manufactures Copper parts to tight tolerances and consistent quality. Copper is excellent conductivity; etched for lead frames and circuits, so the process is set up specifically for the material.
Chemical Etching Capability for Copper
- Foil thickness 0.02–1.0 mm
- Minimum feature ≈ 0.8 × metal thickness
- Burr-free, stress-free edges
- Tooling-free: revise artwork digitally
Copper Material Data
| Density | 8.94 g/cm³ |
|---|---|
| Tensile strength | 220–350 MPa |
| Yield strength (0.2%) | 70–330 MPa |
| Hardness | 40–100 HV |
| Melting point | 1083 °C |
| Thermal conductivity | 391 W/m·K |
| Thermal expansion | 17.0 ×10⁻⁶/K |
| Electrical conductivity | 101% |
| Machinability (C36000 = 100%) | 20% |
| Grades we run | C10100 OFE, C10200 OF, C11000 ETP, C14500 tellurium copper |
Published typical values for C11000 ETP. Other grades in the family differ — the certificate supplied with your order carries the actual heat-lot figures.
It smears rather than cuts. Razor-sharp uncoated tooling and high rake; if the print allows it, C14500 tellurium copper machines four times better at ~90% IACS.
How Chemical Etching Copper Works
A photo-resist patterned from your artwork masks the Copper, and an etchant dissolves the exposed metal evenly from both sides. Because there is no mechanical force, the part stays flat and stress-free.
Programming is driven directly by your 3D model or print. Work-holding, tool selection and the cutting strategy are planned around the critical features and the material before the first chip is cut. First-off inspection confirms the process is centred before production continues.
Achievable Tolerances for Chemical Etching Copper
| Feature | Standard | Precision |
|---|---|---|
| Feature dimension | ±0.05 mm | ±0.02 mm |
| Minimum feature width | 1.0 × thickness | 0.8 × thickness |
| Foil thickness range | 0.02–1.0 mm | 0.05–0.5 mm |
| Edge condition | burr-free | burr-free, no HAZ |
| Flatness of etched part | 0.1 mm over 100 mm | 0.05 mm over 100 mm |
| Half-etch depth control | ±20% of depth | ±10% of depth |
| Tab / breakout size | 0.5 mm | 0.3 mm |
Standard is what a normal quotation assumes. Precision is available on nominated features and is priced separately, because it needs extra setups, in-process gauging and CMM verification. Call out only the features that need it — blanket-tightening a drawing is the single most common reason a quote comes back expensive.
Chemical Etching Quality & Inspection
We control quality throughout the process, not just at the end. In-process checks plus final inspection — including CMM where specified — keep every Copper part to print. Inspection reports, material certificates and first-article documentation can be supplied on request.
Chemical Etching Tolerances & Surface Finish
Etched Copper holds tight, repeatable feature tolerances on thin gauge, with a minimum feature size around 0.8× the metal thickness and completely burr-free edges.
Exact achievable figures depend on the alloy, the feature size and the part geometry. Tell us which dimensions are critical and we will advise feasibility up front.
Working with Copper
As a material, Copper is excellent conductivity; etched for lead frames and circuits. Our setup reflects the alloy's machinability so the finished part is accurate and free of avoidable defects.
We verify the exact grade and condition before machining, and traceable mill certs are available on request. We can work to your nominated material source or specification when required.
Secondary Operations & Finishing
Finished Copper parts can move straight into secondary operations under one roof. Typical add-ons are deburring, passivation, anodising, plating, blasting, polishing and laser marking. We coordinate the whole chain so you receive complete, inspection-ready parts.
Design Tips for Chemical Etching Copper
We are happy to suggest design tweaks that improve manufacturability. Designing features no finer than ~0.8× foil thickness and allowing tab placement gives the best yield on etched Copper. If you send your model early, we will return practical DFM feedback before you commit to production.
Applications of Chemical Etching Copper
Customers order Chemical Etching Copper components for everything from instrumentation to structural and functional assemblies. Whether you need a single prototype or recurring production volume, the same process discipline applies.
How to Order Chemical Etching Copper
Getting a quote is simple. Share your model, the material grade, your quantity and target tolerances. You receive a clear quotation with lead time and honest manufacturability feedback.
Parts We Have Run in Copper
Three representative Chemical Etching Copper jobs, with the callouts that actually drove the process plan. Yours will differ — these are here so you can judge whether your part is in our range before you spend time on an RFQ.
Half-etched flex shim
- Material
- Copper
- Size
- 90 × 40 × 0.3 mm
- Key callouts
- Half-etch depth 0.15 ±0.015 mm
- Batch
- 6,000 pcs
Depth held by timed etch with in-line thickness checks every rack.
Encoder disc
- Material
- Copper
- Size
- Ø40 × 0.05 mm
- Key callouts
- Slot width 0.08 ±0.01 mm, concentricity 0.02 mm
- Batch
- 3,000 pcs
Foil this thin cannot be punched; etching is the only route that leaves it flat.
Surgical mesh
- Material
- Copper
- Size
- 50 × 25 × 0.2 mm
- Key callouts
- Feature 0.16 mm, edges burr- and stress-free
- Batch
- 2,000 pcs
Passivated after etching; a burr here is a patient-safety issue, not a cosmetic one.
Finishing Options for Copper
| Finish | Thickness / effect | Why it gets specified |
|---|---|---|
| Tin plate | 3–15 µm | Solderable, prevents oxidation |
| Silver plate | 2–10 µm | Lowest contact resistance for RF and power |
| Nickel underplate | 2–5 µm | Diffusion barrier under tin or gold |
| Gold flash | 0.05–1 µm | Contact surfaces, over nickel |
| Deburr / edge break | 0.05–0.3 mm | All parts unless the drawing says otherwise |
| Bead blast | Ra 1.6–3.2 µm | Uniform matt finish, hides tool marks |
| Laser marking | — | Part number, lot code, data matrix |
No drawing yet? Build one in the browser.
Set the metal, dimensions and features, watch the 3D model update as you type, then switch to the 2D sheet to add dimensions and tolerances. Download it or send it straight to us with your RFQ.
What We Need to Quote Chemical Etching Copper
- GeometrySTEP or IGES for the 3D model, plus a PDF drawing if you have tolerance callouts. A dimensioned sketch is enough to start.
- MaterialThe exact Copper grade and condition — temper, heat-treat state or hardness. If you are not sure, tell us the function and we will suggest one.
- QuantityPrototype count and the expected annual volume. Both change how the part is made and therefore what it costs.
- TolerancesWhich features are critical. Everything else runs to our standard tolerance, which is what keeps the price sensible.
- FinishSurface treatment, cosmetic requirements, and any faces that must be masked.
- DocumentsWhether you need a material certificate, dimensional report, FAIR or PPAP with the shipment.
Missing something from the list is not a problem — send what you have. We will come back with the specific questions rather than a generic form.
Other Metals for Chemical Etching
Send the drawing, the Copper grade and the quantity. You get pricing, lead time and any DFM notes back — usually within one business day.
Request a QuoteFrequently Asked Questions
What surface finish is achievable on Copper with Chemical Etching?
Etching leaves Copper with a uniform matte surface and clean, burr-free edges, with optional post-etch finishing.
Does Chemical Etching Copper require dedicated tooling?
No. Copper etching is tooling-free — the pattern is a photo-resist made from your artwork, so design changes cost nothing in tooling and prototypes are fast.
Can VT machining make custom Copper parts to my drawing?
Yes. Copper Copper etching is made to order from your CAD/2D drawing. Share your geometry, material grade, tolerance and quantity and we will confirm feasibility, lead time and pricing.
What material thickness or size range suits Chemical Etching Copper?
Etching suits Copper foil roughly 0.02–1.0 mm thick — the thinner the foil, the finer the achievable detail.
What is Chemical Etching Copper and how is it done?
Chemical Etching Copper refers to photochemical etching uses a patterned resist and etchant to dissolve metal precisely, with no mechanical force, burrs or induced stress. Applied to Copper — excellent conductivity; etched for lead frames and circuits — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.