CNC Polishing 2507 Duplex Stainless Steel is part of VT machining's grade-specific capability. 2507 Duplex Stainless Steel is high-strength, chloride-corrosion-resistant, and we combine controlled finishing with material-aware setup to produce parts that meet your specification.
CNC Polishing Capability for 2507 Duplex Stainless Steel
- Duplex ferritic-austenitic structure
- High strength + chloride resistance
- Tolerance to ±0.01 mm
- PREN typically 35–43
2507 Duplex Stainless Steel Material Data
| Density | 8.00 g/cm³ |
|---|---|
| Tensile strength | 515 MPa |
| Yield strength (0.2%) | 205 MPa |
| Hardness | 170 HB |
| Melting point | 1400–1450 °C |
| Thermal conductivity | 16.2 W/m·K |
| Thermal expansion | 17.3 ×10⁻⁶/K |
| Electrical conductivity | 2.4% |
| Machinability (C36000 = 100%) | 45% |
| Grades we run | 303, 304/304L, 316/316L, 321, 410, 416, 420, 17-4PH, 2205 duplex |
Published typical values for 304. Other grades in the family differ — the certificate supplied with your order carries the actual heat-lot figures.
It work-hardens the moment a tool dwells. Constant feed and positive-rake tooling; a rubbing pass leaves a glazed skin the next tool cannot get through.
Machining 2507 Duplex Stainless Steel with CNC Polishing
When finishing 2507 Duplex Stainless Steel, machinability is tougher than austenitic grades; reduced speeds and rigid setups maintain accuracy. Our process plan reflects this so the finished part holds its tolerances without distortion or poor finish.
Documented parameters for 2507 Duplex Stainless Steel mean predictable cycle times and stable, repeatable results.
Achievable Tolerances for CNC Polishing 2507 Duplex Stainless Steel
| 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 2507 Duplex Stainless Steel?
Customers select 2507 Duplex Stainless Steel for CNC Polishing because it is high-strength, chloride-corrosion-resistant. We handle grade verification and any required heat treatment or finishing.
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 2507 Duplex Stainless Steel 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.
Design Tips for CNC Polishing 2507 Duplex Stainless Steel
Small design adjustments often cut cost and lead time. Telling us the target Ra, the cosmetic faces and any masking needs lets us finish 2507 Duplex Stainless Steel 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 2507 Duplex Stainless Steel 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.
Applications of CNC Polishing 2507 Duplex Stainless Steel
2507 Duplex Stainless Steel 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 2507 Duplex Stainless Steel
Starting your project takes one email. Send your CAD or 2D drawing, the 2507 Duplex Stainless Steel 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 2507 Duplex Stainless Steel
| Finish | Thickness / effect | Why it gets specified |
|---|---|---|
| Citric passivation | — | ASTM A967 / AMS 2700, removes free iron |
| Electropolish | 5–25 µm removed | Ra improves by roughly half, hygienic surface |
| Brushed / grained | Ra 0.4–1.6 µm | No. 4 finish, directional |
| PVD coating | 2–5 µm | TiN, TiCN for wear surfaces |
| 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 2507 Duplex Stainless Steel
- 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 2507 Duplex Stainless Steel 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.
2507 Duplex Stainless Steel in Other Processes
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Send the drawing, the 2507 Duplex Stainless Steel 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 Polishing 2507 Duplex Stainless Steel?
CNC Polishing prototypes for 2507 Duplex Stainless Steel 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 2507 Duplex Stainless Steel with CNC Polishing?
Our finishing processes refine 2507 Duplex Stainless Steel surfaces to Ra values as low as 0.05 µm for cosmetic or sealing faces.
Can VT machining make custom 2507 Duplex Stainless Steel parts to my drawing?
Yes. 2507 Duplex Stainless Steel 2507 Duplex Stainless Steel 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.
How clean are the edges produced by CNC Polishing on 2507 Duplex Stainless Steel?
Our deburring leaves 2507 Duplex Stainless Steel with a consistent, controlled edge break and burr-free surfaces.