Need reliable CNC Polishing C521 Phosphor Bronze? VT machining machines C521 Phosphor Bronze to tight tolerances and consistent quality. As a material, C521 Phosphor Bronze is springy, low-friction and corrosion-resistant; we adapt feeds, speeds and tooling to suit.
CNC Polishing 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 Polishing
When finishing C521 Phosphor Bronze, machinability is good; springy with excellent fatigue life. Our process plan reflects this so the finished part holds its tolerances without distortion or poor finish.
Documented parameters for C521 Phosphor Bronze mean predictable cycle times and stable, repeatable results.
Achievable Tolerances for CNC Polishing C521 Phosphor Bronze
| Feature | Standard | Precision |
|---|---|---|
| Surface roughness | Ra 0.8 µm | Ra 0.05 µm |
| Edge break | 0.1–0.3 mm | 0.05 ±0.02 mm |
| Material removed | 0.02 mm | 0.005 mm |
| Bore roundness after honing | 0.005 mm | 0.002 mm |
| Cross-hatch angle | 45° ±10° | 45° ±5° |
| Cosmetic grade | uniform satin | mirror, no visible lines |
| Masking of datum faces | on request | standard |
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 C521 Phosphor Bronze?
Customers select C521 Phosphor Bronze for CNC Polishing because it is springy, low-friction and corrosion-resistant. We handle grade verification and any required heat treatment or finishing.
Design Tips for CNC Polishing C521 Phosphor Bronze
Small design adjustments often cut cost and lead time. Telling us the target Ra, the cosmetic faces and any masking needs lets us finish C521 Phosphor Bronze efficiently without over-processing. If you send your model early, we will return practical DFM feedback before you commit to production.
Secondary Operations & Finishing
Most C521 Phosphor Bronze 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.
CNC Polishing 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.
CNC Polishing Tolerances & Surface Finish
Finishing brings C521 Phosphor Bronze to a defined roughness target — from a uniform satin to Ra values as low as 0.05 µm — with controlled, repeatable edge breaks.
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 Polishing C521 Phosphor Bronze
C521 Phosphor Bronze 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 Polishing C521 Phosphor Bronze
Starting your project takes one email. Send your CAD or 2D drawing, the C521 Phosphor Bronze 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 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 Polishing 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
Can VT machining make custom C521 Phosphor Bronze parts to my drawing?
Yes. C521 Phosphor Bronze C521 Phosphor Bronze finishing 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.
Which industries use CNC Polishing C521 Phosphor Bronze parts?
CNC Polishing C521 Phosphor Bronze parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise C521 Phosphor Bronze components are required.
What is the typical lead time and minimum order for CNC Polishing C521 Phosphor Bronze?
CNC Polishing 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.
What surface finish is achievable on C521 Phosphor Bronze with CNC Polishing?
Our finishing processes refine C521 Phosphor Bronze surfaces to Ra values as low as 0.05 µm for cosmetic or sealing faces.