VT machining specialises in CNC Polishing Incoloy 825. Because Incoloy 825 is high-temperature strength and oxidation resistance, and its machinability is very difficult; rigid setups, carbide/ceramic tooling, low speeds, we plan each job around the grade to protect accuracy and surface quality.
CNC Polishing Capability for Incoloy 825
- High-temperature strength
- Oxidation resistant
- Tolerance to ±0.01 mm
- Aerospace-grade
Incoloy 825 Material Data
| Density | 8.19 g/cm³ |
|---|---|
| Tensile strength | 1375 MPa |
| Yield strength (0.2%) | 1100 MPa |
| Hardness | 36–44 HRC |
| Melting point | 1260–1336 °C |
| Thermal conductivity | 11.4 W/m·K |
| Thermal expansion | 13.0 ×10⁻⁶/K |
| Electrical conductivity | 1.4% |
| Machinability (C36000 = 100%) | 12–15% |
| Grades we run | 600, 625, 718, X-750, 725 |
Published typical values for Inconel 718 (aged). Other grades in the family differ — the certificate supplied with your order carries the actual heat-lot figures.
Tool life is measured in minutes, not hours. Ceramic or coated-carbide tooling, low surface speed, high pressure coolant, and a scheduled tool change rather than waiting for failure.
Machining Incoloy 825 with CNC Polishing
Incoloy 825 behaves predictably under CNC Polishing once parameters are dialled in: machinability is very difficult; rigid setups, carbide/ceramic tooling, low speeds, and we tune the operation accordingly.
We hold reference parameters for this grade, so repeat orders of Incoloy 825 run consistently from one batch to the next.
Achievable Tolerances for CNC Polishing Incoloy 825
| 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.
CNC Polishing Tolerances & Surface Finish
Finishing brings Incoloy 825 to a defined roughness target — from a uniform satin to Ra values as low as 0.05 µm — with controlled, repeatable edge breaks.
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.
Design Tips for CNC Polishing Incoloy 825
We are happy to suggest design tweaks that improve manufacturability. Telling us the target Ra, the cosmetic faces and any masking needs lets us finish Incoloy 825 efficiently without over-processing. If you send your model early, we will return practical DFM feedback before you commit to production.
CNC Polishing 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 Incoloy 825 part to print. Inspection reports, material certificates and first-article documentation can be supplied on request.
Why Incoloy 825?
Incoloy 825 is chosen when a part needs what this grade offers — it is high-temperature strength and oxidation resistance. We confirm the grade and any temper or heat-treat condition with you before machining.
Secondary Operations & Finishing
Finished Incoloy 825 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.
Applications of CNC Polishing Incoloy 825
Customers order CNC Polishing Incoloy 825 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 Polishing Incoloy 825
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 Incoloy 825
| 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 Incoloy 825
- 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 Incoloy 825 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.
Incoloy 825 in Other Processes
Related
Send the drawing, the Incoloy 825 condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
Which industries use CNC Polishing Incoloy 825 parts?
CNC Polishing Incoloy 825 parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise Incoloy 825 components are required.
Why is Incoloy 825 a good choice for CNC Polishing?
Incoloy 825 is high-temperature strength and oxidation resistance, which makes it well suited to CNC Polishing. We tune the process to the alloy so the finished Incoloy 825 finishing part meets your dimensional and functional requirements.
What tolerances can you hold for CNC Polishing Incoloy 825?
Achievable tolerances for Incoloy 825 finishing depend on the alloy, geometry and feature size. We hold tight, repeatable tolerances appropriate to the feature and material. Exact figures are confirmed against your drawing callouts.
What surface finish is achievable on Incoloy 825 with CNC Polishing?
Our finishing processes refine Incoloy 825 surfaces to Ra values as low as 0.05 µm for cosmetic or sealing faces.
What is CNC Polishing Incoloy 825 and how is it done?
CNC Polishing Incoloy 825 refers to cNC polishing refines surfaces to a smooth, reflective finish for cosmetic and functional needs. Applied to Incoloy 825 — high-temperature strength and oxidation resistance — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.