Chemical Etching Silver from VT machining delivers precision Silver parts produced to your exact drawing. Photochemical etching uses a patterned resist and etchant to dissolve metal precisely, with no mechanical force, burrs or induced stress, and we tune every parameter to the behaviour of Silver, which is highest conductivity; etched for fine contacts.
Chemical Etching Capability for Silver
- Foil thickness 0.02–1.0 mm
- Minimum feature ≈ 0.8 × metal thickness
- Burr-free, stress-free edges
- Tooling-free: revise artwork digitally
Silver Material Data
| Density | 10.49 g/cm³ |
|---|---|
| Tensile strength | 125–200 MPa |
| Yield strength (0.2%) | 55 MPa |
| Hardness | 25–30 HV |
| Melting point | 962 °C |
| Thermal conductivity | 429 W/m·K |
| Thermal expansion | 19.5 ×10⁻⁶/K |
| Electrical conductivity | 105% |
| Machinability (C36000 = 100%) | 60% |
| Grades we run | Ag 99.9, Ag 99.99, AgCu 90/10, AgNi contacts |
Published typical values for Ag 99.9. Other grades in the family differ — the certificate supplied with your order carries the actual heat-lot figures.
Highest thermal and electrical conductivity of any metal, and priced accordingly. Etching is the usual route because it wastes almost no material.
How Chemical Etching Silver Works
A photo-resist patterned from your artwork masks the Silver, and an etchant dissolves the exposed metal evenly from both sides. Because there is no mechanical force, the part stays flat and stress-free.
We start from your supplied geometry and tolerance scheme. The setup is designed to minimise re-clamping, which protects positional accuracy across features. A first article is verified against the drawing before the balance of the batch is released.
Achievable Tolerances for Chemical Etching Silver
| 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.
Design Tips for Chemical Etching Silver
Small design adjustments often cut cost and lead time. Designing features no finer than ~0.8× foil thickness and allowing tab placement gives the best yield on etched Silver. If you send your model early, we will return practical DFM feedback before you commit to production.
Secondary Operations & Finishing
Most Silver parts need some finishing, which we manage in-house or through vetted partners. Options include deburring and edge-breaking, heat treatment, surface grinding, polishing, and plating or anodising for corrosion resistance and appearance. Give us the finished-part requirement and we will sequence every operation correctly.
Working with Silver
Silver is highest conductivity; etched for fine contacts. We translate those properties into a process plan: the right tooling, speeds, feeds and fixturing for the alloy.
Where the grade, temper or heat-treat condition matters to performance, we confirm it with you and can supply material certificates. Material is procured to recognised standards for consistent, repeatable results.
Chemical Etching Quality & Inspection
Quality is built in, not inspected on. We monitor key features during the run and confirm them at final inspection, with CMM verification available for tight tolerances. We provide the inspection and traceability records your quality system requires.
Chemical Etching Tolerances & Surface Finish
Etched Silver holds tight, repeatable feature tolerances on thin gauge, with a minimum feature size around 0.8× the metal thickness and completely burr-free edges.
The tightest tolerances are reserved for the features your drawing flags as critical. Share your tolerance scheme and we will confirm what is realistic before quoting.
Applications of Chemical Etching Silver
Silver parts made this way are found throughout aerospace, medical, automotive, electronics and industrial equipment. Prototype, bridge and production volumes are all welcome.
How to Order Chemical Etching Silver
Starting your project takes one email. Send your CAD or 2D drawing, the Silver grade and condition, the quantity and any finish or inspection requirements. We respond quickly with price, lead time and any DFM notes, in clear English.
Parts We Have Run in Silver
Three representative Chemical Etching Silver 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.
EMI shielding mesh
- Material
- Silver
- Size
- 120 × 80 × 0.1 mm
- Key callouts
- Aperture 0.20 ±0.02 mm, 55% open area
- Batch
- 8,000 pcs
Etched from both sides at once so the aperture wall stays symmetrical.
Surgical mesh
- Material
- Silver
- 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.
Filter screen
- Material
- Silver
- Size
- Ø25 × 0.08 mm
- Key callouts
- 0.06 mm holes, 40% open area
- Batch
- 15,000 pcs
Minimum feature is about 0.8 × thickness, which sets the smallest hole worth quoting.
Finishing Options for Silver
| Finish | Thickness / effect | Why it gets specified |
|---|---|---|
| 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 Silver
- 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 Silver 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 Silver grade and the quantity. You get pricing, lead time and any DFM notes back — usually within one business day.
Request a QuoteFrequently Asked Questions
Does Chemical Etching Silver require dedicated tooling?
No. Silver 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.
What surface finish is achievable on Silver with Chemical Etching?
Etching leaves Silver with a uniform matte surface and clean, burr-free edges, with optional post-etch finishing.
What is Chemical Etching Silver and how is it done?
Chemical Etching Silver refers to photochemical etching uses a patterned resist and etchant to dissolve metal precisely, with no mechanical force, burrs or induced stress. Applied to Silver — highest conductivity; etched for fine contacts — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.
What material thickness or size range suits Chemical Etching Silver?
Etching suits Silver foil roughly 0.02–1.0 mm thick — the thinner the foil, the finer the achievable detail.