CNC Punching C268 Brass from VT machining delivers precision C268 Brass parts made to your exact drawing. CNC turret punching shears holes and form features in sheet metal using programmable tooling for fast, repeatable patterns, with parameters tuned to C268 Brass, which is free-machining with good conductivity.
CNC Punching Capability for C268 Brass
- Free-machining
- Good conductivity
- Attractive finish
- Tolerance to ±0.01 mm
C268 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.
Machining C268 Brass with CNC Punching
C268 Brass behaves predictably under CNC Punching once parameters are dialled in: machinability is excellent (free-machining); fast speeds, clean finish, and we tune the operation accordingly.
We hold reference parameters for this grade, so repeat orders of C268 Brass run consistently from one batch to the next.
Achievable Tolerances for CNC Punching C268 Brass
| Feature | Standard | Precision |
|---|---|---|
| Hole position across sheet | ±0.15 mm | ±0.10 mm |
| Hole diameter | ±0.10 mm | ±0.05 mm |
| Overall blank size | ±0.20 mm | ±0.10 mm |
| Minimum hole | 1.0 × thickness | 0.8 × thickness |
| Hole-to-edge distance | 2.0 × thickness | 1.5 × thickness |
| Burr height | 0.08 mm | 0.03 mm (deburred) |
| Sheet thickness range | 0.5–6.0 mm | 0.5–3.0 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.
Why C268 Brass?
C268 Brass is chosen when a part needs what this grade offers — it is free-machining with good conductivity. We confirm the grade and any temper or heat-treat condition with you before machining.
CNC Punching Tolerances & Surface Finish
Punched C268 Brass holds hole-position repeatability around ±0.10 mm across the sheet, with consistent hole quality when punch/die clearance is matched to the gauge.
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.
CNC Punching 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 C268 Brass part to print. Inspection reports, material certificates and first-article documentation can be supplied on request.
Secondary Operations & Finishing
Finished C268 Brass 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 CNC Punching C268 Brass
We are happy to suggest design tweaks that improve manufacturability. Keeping hole-to-edge and hole-to-hole distances at least 1.5–2× thickness avoids distortion and tearing in punched C268 Brass. If you send your model early, we will return practical DFM feedback before you commit to production.
Applications of CNC Punching C268 Brass
Customers order CNC Punching C268 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.
How to Order CNC Punching C268 Brass
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.
Finishing Options for C268 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 Punching C268 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 C268 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.
C268 Brass in Other Processes
Related
Send the drawing, the C268 Brass condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
What material thickness or size range suits CNC Punching C268 Brass?
Punching suits C268 Brass sheet roughly 0.5–6 mm thick, with clearance matched to the gauge.
Does CNC Punching C268 Brass require dedicated tooling?
Punching uses programmable turret tooling; standard tools cover most patterns, with special tools added for unique forms.
What is the typical lead time and minimum order for CNC Punching C268 Brass?
CNC Punching prototypes for C268 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.
Why is C268 Brass a good choice for CNC Punching?
C268 Brass is free-machining with good conductivity, which makes it well suited to CNC Punching. We tune the process to the alloy so the finished C268 Brass punching part meets your dimensional and functional requirements.
How clean are the edges produced by CNC Punching on C268 Brass?
Punched C268 Brass edges are clean when punch/die clearance is correct; we set clearance to the gauge and can add deburring if specified.