CNC Sinker EDM C377 Brass from VT machining delivers precision C377 Brass parts made to your exact drawing. Sinker (die-sink) EDM burns a shaped electrode into metal to form precise cavities and blind features, with parameters tuned to C377 Brass, which is free-machining with good conductivity.
CNC Sinker EDM Capability for C377 Brass
- Free-machining
- Good conductivity
- Attractive finish
- Tolerance to ±0.01 mm
C377 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 C377 Brass with CNC Sinker EDM
When EDM machining C377 Brass, machinability is excellent (free-machining); fast speeds, clean finish. Our process plan reflects this so the finished part holds its tolerances without distortion or poor finish.
Documented parameters for C377 Brass mean predictable cycle times and stable, repeatable results.
Achievable Tolerances for CNC Sinker EDM C377 Brass
| Feature | Standard | Precision |
|---|---|---|
| Profile dimension | ±0.010 mm | ±0.002 mm |
| Internal corner radius | 0.15 mm | 0.05 mm |
| Taper control over 50 mm | 0.02 mm | 0.005 mm |
| Surface finish (skim passes) | Ra 0.8 µm | Ra 0.2 µm |
| Recast layer | 10 µm | 2 µm (fine skim) |
| Start-hole diameter | 1.0 mm | 0.25 mm |
| Workpiece hardness | no limit (conductive) | no limit (conductive) |
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.
Secondary Operations & Finishing
Most C377 Brass 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.
Why C377 Brass?
Customers select C377 Brass for CNC Sinker EDM because it is free-machining with good conductivity. We handle grade verification and any required heat treatment or finishing.
CNC Sinker EDM 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.
Design Tips for CNC Sinker EDM C377 Brass
Small design adjustments often cut cost and lead time. EDM suits sharp internal corners, thin ribs and hardened C377 Brass that cannot be milled; allowing a small corner radius where possible speeds the cut. If you send your model early, we will return practical DFM feedback before you commit to production.
CNC Sinker EDM Tolerances & Surface Finish
EDM holds tolerances to roughly ±0.002–0.005 mm with no cutting force on the C377 Brass part, producing fine, controlled surface textures and sharp internal corners impossible to mill.
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.
Applications of CNC Sinker EDM C377 Brass
C377 Brass 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 CNC Sinker EDM C377 Brass
Starting your project takes one email. Send your CAD or 2D drawing, the C377 Brass 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.
Finishing Options for C377 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 Sinker EDM C377 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 C377 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.
C377 Brass in Other Processes
Related
Send the drawing, the C377 Brass condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
What is the typical lead time and minimum order for CNC Sinker EDM C377 Brass?
CNC Sinker EDM prototypes for C377 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.
How clean are the edges produced by CNC Sinker EDM on C377 Brass?
Machined C377 Brass edges are clean and to specification; edge-break or deburring is added when your drawing calls for it.
What material thickness or size range suits CNC Sinker EDM C377 Brass?
We machine C377 Brass across a broad size range; share your part envelope for confirmation.
What tolerances can you hold for CNC Sinker EDM C377 Brass?
Achievable tolerances for C377 Brass EDM machining depend on the alloy, geometry and feature size. EDM holds tolerances to around ±0.002 mm with no cutting force on the part. Exact figures are confirmed against your drawing callouts.