VT machining provides CNC Laser Cutting Brass for customers who need accurate, repeatable Brass components. Because Brass is free-machining, good conductivity, attractive finish, we adapt the process to suit — controlling the variables that matter for this alloy.
Process Data for CNC Laser Cutting Brass
| 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 C360 Brass, the most common Brass grade we see for CNC Laser Cutting. Typical values for C360 Brass, Half-hard; confirmed on the first part.
CNC Laser Cutting Capability for Brass
- Fiber 1–6 kW
- Kerf 0.1–0.3 mm
- Contour ±0.05 mm
- N₂/O₂ assist gas
Brass Material Data
| Density | 8.50 g/cm³ |
|---|---|
| Tensile strength | 340–470 MPa |
| Yield strength (0.2%) | 125–310 MPa |
| Hardness | 78–130 HB |
| Melting point | 885–900 °C |
| Thermal conductivity | 115 W/m·K |
| Thermal expansion | 20.5 ×10⁻⁶/K |
| Electrical conductivity | 26% |
| Machinability (C36000 = 100%) | 100% (the benchmark) |
| Grades we run | C36000 free-cutting, C37700 forging, C26000 cartridge, C46400 naval |
Published typical values for C36000. Other grades in the family differ — the certificate supplied with your order carries the actual heat-lot figures.
Nothing much — this is the easiest metal in the shop. Worth asking about if a copper or bronze part is cost-driven rather than conductivity-driven.
How CNC Laser Cutting Brass Works
A focused fibre-laser beam melts and blows material from the Brass 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.
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 CNC Laser Cutting Brass
| 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.
CNC Laser Cutting Tolerances & Surface Finish
Laser-cut Brass holds contour tolerances around ±0.05 mm depending on thickness, with a narrow kerf and a clean, near burr-free edge.
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 Brass
As a material, Brass is free-machining, good conductivity, attractive finish. 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.
Design Tips for CNC Laser Cutting Brass
We are happy to suggest design tweaks that improve manufacturability. Keeping holes no smaller than the material thickness, allowing for kerf, and grouping features sensibly improves edge quality and nesting yield on Brass. If you send your model early, we will return practical DFM feedback before you commit to production.
Applications of CNC Laser Cutting Brass
Customers order CNC Laser Cutting Brass 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.
Typical Brass Parts for CNC Laser Cutting
Illustrative examples of CNC Laser Cutting Brass 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.
Machine guard panel
- Material
- Brass
- Size
- 900 × 600 × 3 mm
- Key callouts
- Slot pattern ±0.10 mm, hole-to-edge 6 mm
- Batch
- 150 pcs
Cut with common-line pairs to halve the pierce count.
Gasket / shim set
- Material
- Brass
- Size
- Ø120 × 0.5 mm
- Key callouts
- ID/OD ±0.05 mm, no heat discolouration
- Batch
- 3,000 pcs
Small-diameter holes below 1.2 × thickness are punched, not lased.
Battery busbar
- Material
- Brass
- 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.
Finishing Options for Brass
| Finish | Thickness / effect | Why it gets specified |
|---|---|---|
| Nickel plate | 5–15 µm | Hard, bright, corrosion resistant |
| Chrome plate | 0.3–1 µm | Decorative, over nickel |
| Clear lacquer | 10–20 µm | Stops the natural tarnish |
| Tin plate | 3–15 µm | Solderable contacts |
| 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 CNC Laser Cutting Brass
- 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 Brass 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 CNC Laser Cutting
Other Processes for Brass
Send the drawing, the Brass 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 CNC Laser Cutting Brass require dedicated tooling?
Most Brass cutting work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
Can VT machining make custom Brass parts to my drawing?
Yes. Brass cutting 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.
How clean are the edges produced by CNC Laser Cutting on Brass?
Laser cutting leaves Brass with a narrow kerf and a clean, near burr-free edge and only a small heat-affected zone.
Which industries use CNC Laser Cutting Brass parts?
CNC Laser Cutting Brass parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise Brass components are required.
What is the typical lead time and minimum order for CNC Laser Cutting Brass?
CNC Laser Cutting prototypes for Brass can be produced quickly and scaled to series production. Send your drawing and quantity and we will advise lead time and any minimum order.