Laser Cutting Bronze is a core capability at VT machining. We combine controlled cutting with material-aware setup for Bronze — an alloy that is wear resistant with good bearing properties — to produce parts that meet your specification first time.
Process Data for Laser Cutting Bronze
| Max practical thickness (6 kW fibre) | 8 mm |
|---|---|
| Assist gas | Nitrogen |
| Kerf width | 0.1-0.3 mm |
| Profile tolerance | ±0.05 mm (≤3 mm sheet) |
Shown for C954 Aluminum Bronze, the most common Bronze grade we see for Laser Cutting. Typical values for C954 Aluminum Bronze, As cast or heat-treated; confirmed on the first part.
Laser Cutting Capability for Bronze
- Fiber source 1–6 kW
- Kerf width 0.1–0.3 mm
- Contour tolerance ±0.05 mm
- Assist gas (N₂/O₂) selected per alloy
Bronze Material Data
| Density | 8.80 g/cm³ |
|---|---|
| Tensile strength | 240 MPa |
| Yield strength (0.2%) | 125 MPa |
| Hardness | 65 HB |
| Melting point | 855–980 °C |
| Thermal conductivity | 59 W/m·K |
| Thermal expansion | 18.0 ×10⁻⁶/K |
| Electrical conductivity | 12% |
| Machinability (C36000 = 100%) | 70% |
| Grades we run | C93200 SAE 660, C54400, C63000 aluminium bronze, C86300 manganese bronze |
Published typical values for C93200 (SAE 660). Other grades in the family differ — the certificate supplied with your order carries the actual heat-lot figures.
Cast bearing bronze has porosity. On sealing faces we specify continuous-cast stock rather than sand-cast, because a pinhole in a bore face is not repairable.
How Laser Cutting Bronze Works
A focused fibre-laser beam melts and blows material from the Bronze sheet along the programmed contour. Power, focal position, nozzle stand-off and assist-gas pressure are tuned to the alloy and thickness for a clean, square edge.
Every job begins from your CAD model or 2D drawing. Fixturing and tool paths are planned so the most critical dimensions are produced in the most rigid, repeatable setup. Critical dimensions are checked on the first part and monitored through the run.
Achievable Tolerances for Laser Cutting Bronze
| Feature | Standard | Precision |
|---|---|---|
| Contour dimension | ±0.10 mm | ±0.05 mm |
| Hole diameter | ±0.10 mm | ±0.05 mm |
| Kerf width | 0.20 mm | 0.10 mm |
| Squareness of cut edge | 0.5° | 0.2° |
| Heat-affected zone | 0.15 mm | 0.05 mm (N₂ assist) |
| Minimum hole diameter | 1.2 × thickness | 1.0 × thickness |
| Edge condition | light dross | burr-free, N₂ cut |
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 Laser Cutting Bronze
A few design choices make a real difference to cost and quality. Keeping holes no smaller than the material thickness, allowing for kerf, and grouping features sensibly improves edge quality and nesting yield on Bronze. If you send your model early, we will return practical DFM feedback before you commit to production.
Working with Bronze
Bronze offers a useful combination of properties: it is wear resistant with good bearing properties. Those characteristics shape how we approach laser cutting — from tool and parameter selection to work-holding and coolant.
If your application is sensitive to alloy condition, we agree the specification in writing and document it. Stock is sourced from reputable suppliers so what you order is what you receive.
Laser Cutting Tolerances & Surface Finish
Laser-cut Bronze holds contour tolerances around ±0.05 mm depending on thickness, with a narrow kerf and a clean, near burr-free edge.
Final tolerances are governed by the material's behaviour, wall thickness and overall stiffness. We give honest DFM feedback if a callout would be costly or better achieved another way.
Applications of Laser Cutting Bronze
Laser Cutting of Bronze supports parts across aerospace, medical, automotive, electronics, semiconductor, energy and general industrial sectors. We scale from one-off prototypes to ongoing production while holding the same quality.
Typical Bronze Parts for Laser Cutting
Illustrative examples of Laser Cutting Bronze parts and the callouts that usually drive the process plan. They show the kind of work that fits this process; they are not specific customer orders.
Battery busbar
- Material
- Bronze
- Size
- 180 × 30 × 2 mm
- Key callouts
- Contour ±0.08 mm, hole ±0.05 mm
- Batch
- 2,000 pcs
Copper is cut on the fibre laser with a reflective-material head; not every shop can run it.
EMI shield can
- Material
- Bronze
- Size
- 60 × 45 × 0.3 mm
- Key callouts
- Contour ±0.05 mm, tab width 0.5 mm
- Batch
- 5,000 pcs
Nested 96-up per sheet; nesting is where the cost comes out of a part this small.
Control panel face
- Material
- Bronze
- Size
- 400 × 300 × 1.5 mm
- Key callouts
- Cutout position ±0.10 mm, no dross on visible face
- Batch
- 600 pcs
Cut with nitrogen so the edge takes powder coat without secondary grinding.
Finishing Options for Bronze
| 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 Laser Cutting Bronze
- 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 Bronze 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 Laser Cutting
Other Processes for Bronze
Send the drawing, the Bronze 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 Laser Cutting Bronze require dedicated tooling?
Most Bronze cutting work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
What tolerances can you hold for Laser Cutting Bronze?
Achievable tolerances for Bronze cutting depend on the alloy, geometry and feature size. Laser cutting holds contour tolerances to around ±0.05 mm depending on thickness. Exact figures are confirmed against your drawing callouts.
What surface finish is achievable on Bronze with Laser Cutting?
Laser cutting leaves a clean cut face on Bronze with a small heat-affected zone; most parts need little secondary finishing.
How clean are the edges produced by Laser Cutting on Bronze?
Laser cutting leaves Bronze with a narrow kerf and a clean, near burr-free edge and only a small heat-affected zone.
What material thickness or size range suits Laser Cutting Bronze?
Laser-cut Bronze thickness depends on the alloy and its reflectivity; we tune the fiber source and assist gas accordingly.
Why is Bronze a good choice for Laser Cutting?
Bronze is wear resistant with good bearing properties, which makes it well suited to Laser Cutting. We tune the process to the alloy so the finished Bronze cutting part meets your dimensional and functional requirements.