CNC Drilling C521 Phosphor Bronze from VT machining delivers precision C521 Phosphor Bronze parts made to your exact drawing. Programmed drilling produces accurately positioned holes, including deep and pattern hole arrays, with parameters tuned to C521 Phosphor Bronze, which is springy, low-friction and corrosion-resistant.
CNC Drilling Capability for C521 Phosphor Bronze
- Spring temper available
- Good fatigue life
- Corrosion resistant
- Low-friction
C521 Phosphor Bronze Material Data
| Density | 8.86 g/cm³ |
|---|---|
| Tensile strength | 325–965 MPa |
| Yield strength (0.2%) | 140–550 MPa |
| Hardness | 60–200 HV |
| Melting point | 975–1060 °C |
| Thermal conductivity | 69 W/m·K |
| Thermal expansion | 17.8 ×10⁻⁶/K |
| Electrical conductivity | 15% |
| Machinability (C36000 = 100%) | 20% |
| Grades we run | C51000, C51900, C52100, C54400 free-cutting |
Published typical values for C51000. Other grades in the family differ — the certificate supplied with your order carries the actual heat-lot figures.
Spring temper is destroyed by heat. Contacts and spring fingers are etched or wire-EDM cut, never laser cut.
Machining C521 Phosphor Bronze with CNC Drilling
The machinability of C521 Phosphor Bronze is good; springy with excellent fatigue life. For CNC Drilling we select tooling, feeds, speeds and coolant to match, keeping the C521 Phosphor Bronze workpiece stable and the result accurate.
Because we machine C521 Phosphor Bronze regularly, proven settings shorten setup and keep quality repeatable across reorders.
Achievable Tolerances for CNC Drilling C521 Phosphor Bronze
| Feature | Standard | Precision |
|---|---|---|
| Linear dimension (< 100 mm) | ±0.05 mm | ±0.010 mm |
| Linear dimension (100–300 mm) | ±0.10 mm | ±0.025 mm |
| Hole diameter (reamed) | H9 | H7 |
| True position of hole pattern | ±0.10 mm | ±0.025 mm |
| Flatness over 100 mm | 0.05 mm | 0.015 mm |
| Perpendicularity | 0.10 mm | 0.020 mm |
| Surface finish, as machined | Ra 1.6 µm | Ra 0.4 µm |
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 CNC Drilling C521 Phosphor Bronze
A few design choices make a real difference to cost and quality. Generous internal radii, sensible pocket depth-to-width ratios and avoiding very thin unsupported walls all reduce cost and improve accuracy in C521 Phosphor Bronze. If you send your model early, we will return practical DFM feedback before you commit to production.
CNC Drilling Tolerances & Surface Finish
For CNC Drilling, dimensional and positional tolerances around ±0.01 mm are routine, tightening toward ±0.005 mm on precision setups. Surface finish on machined faces typically falls in the Ra 0.4–1.6 µm range depending on tooling and pass strategy.
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.
CNC Drilling Quality & Inspection
Consistent quality comes from disciplined process control. Critical dimensions on C521 Phosphor Bronze parts are checked in-process and verified at final inspection using calibrated instruments and, where required, CMM measurement. Full documentation — dimensional reports, mill certs, FAIR — is available when your programme needs it.
Secondary Operations & Finishing
We complete C521 Phosphor Bronze components with the secondary steps your drawing calls for. We arrange heat treatment, surface treatment, marking and assembly as needed. Tell us the final spec and we will plan the full route so parts arrive ready to use.
Why C521 Phosphor Bronze?
Specifying C521 Phosphor Bronze for CNC Drilling C521 Phosphor Bronze is usually about its properties: springy, low-friction and corrosion-resistant. Tell us the condition you need and we machine to it.
Applications of CNC Drilling C521 Phosphor Bronze
CNC Drilling of C521 Phosphor 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.
How to Order CNC Drilling C521 Phosphor Bronze
Ordering C521 Phosphor Bronze parts is straightforward. Provide the drawing, material, quantity and any certification needs. Our engineers reply — in English — with feasibility, pricing and a realistic lead time, usually within one business day.
Finishing Options for C521 Phosphor 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 CNC Drilling C521 Phosphor 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 C521 Phosphor 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.
C521 Phosphor Bronze in Other Processes
Related
Send the drawing, the C521 Phosphor Bronze 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 Drilling C521 Phosphor Bronze?
CNC Drilling prototypes for C521 Phosphor Bronze can be produced quickly and scaled to series production. Send your drawing and quantity and we will advise lead time and any minimum order.
Does CNC Drilling C521 Phosphor Bronze require dedicated tooling?
Most C521 Phosphor Bronze machining work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
What is CNC Drilling C521 Phosphor Bronze and how is it done?
CNC Drilling C521 Phosphor Bronze refers to programmed drilling produces accurately positioned holes, including deep and pattern hole arrays. Applied to C521 Phosphor Bronze — springy, low-friction and corrosion-resistant — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.
Which industries use CNC Drilling C521 Phosphor Bronze parts?
CNC Drilling C521 Phosphor Bronze parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise C521 Phosphor Bronze components are required.
How clean are the edges produced by CNC Drilling on C521 Phosphor Bronze?
Machined C521 Phosphor Bronze 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 Drilling C521 Phosphor Bronze?
We machine C521 Phosphor Bronze across a broad size range; share your part envelope for confirmation.