VT machining offers CNC Milling for Incoloy 800 (UNS N08800 / 1.4876), typically supplied annealed. Fe-Ni-Cr alloy for oxidation and carburisation resistance.
CNC Milling Notes for Incoloy 800
We use high-efficiency toolpaths with constant engagement on Incoloy 800 to keep cutting temperature and tool wear under control.
For estimating, a 100 × 100 × 10 mm block of Incoloy 800 weighs about 0.79 kg.
Starting Parameters for CNC Milling Incoloy 800
| Cutting speed (carbide) | 25-70 m/min |
|---|---|
| Feed per tooth | 0.018-0.053 mm |
| Spindle speed, Ø10 mm end mill | 800-2230 rpm |
| Insert / tool class | ISO S — sharp PVD-coated carbide |
| Coolant | High-pressure emulsion; ceramic inserts run dry for roughing |
| Thermal growth, 100 mm part, +10 °C | 14.4 µm (CTE 14.4 µm/m·K) |
Starting values for Incoloy 800, Annealed; optimised on the first article.
Incoloy 800 Data Relevant to CNC Milling
| Equivalent designations | UNS N08800 / 1.4876 |
|---|---|
| Key composition | Ni 30-35%, Cr 19-23%, Fe bal. |
| Typical supply condition | Annealed |
| Hardness (typical) | ~75-85 HRB |
| Machinability rating | 20% (AISI B1112 = 100%) |
Typical values; we work to your drawing and mill certificate.
How Incoloy 800 Differs
Fe-Ni-Cr alloy for oxidation and carburisation resistance.
Typical applications: Heat exchangers, furnace parts.
Incoloy 800 vs Similar Grades
| Incoloy 800 | Inconel 718 | Incoloy 825 | Inconel 625 | |
|---|---|---|---|---|
| Key composition | Ni 30-35%, Cr 19-23%, Fe bal. | Ni 50-55%, Cr 17-21%, Nb 4.75-5.5%, Mo | Ni 38-46%, Cr 19.5-23.5%, Mo 2.5-3.5%, Cu | Ni ≥58%, Cr 20-23%, Mo 8-10%, Nb 3.15-4.15% |
| Hardness | ~75-85 HRB | Up to ~40-45 HRC aged | ~75-90 HRB | ~95 HRB-25 HRC |
| Tensile (MPa) | ~600 | ~1240-1400 aged | ~690 | ~830-930 |
| Machinability % | 20 | 10 | 20 | 12 |
| Typical use | Heat exchangers, furnace parts | Turbine discs, fasteners, oil & gas tools | Oil & gas, acid production, pickling | Marine, aerospace ducting, chemical |
More on CNC Milling Inconel
Finishing options, quality documentation and general cnc milling guidance for all inconel grades are on our CNC Milling Inconel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Milling Incoloy 800
Send a STEP/IGES model or PDF drawing, confirm Incoloy 800 and its condition (we usually see it supplied annealed), the quantity, critical tolerances and any finish or certificate requirements.
Incoloy 800 in Other Processes
Related
Send the drawing, the Incoloy 800 condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
Why is Incoloy 800 a good choice for CNC Milling?
Incoloy 800 is high-temperature strength and oxidation resistance, which makes it well suited to CNC Milling. We tune the process to the alloy so the finished Incoloy 800 machining part meets your dimensional and functional requirements.
What surface finish is achievable on Incoloy 800 with CNC Milling?
Surface finish on Incoloy 800 is controlled to your specification; we confirm the achievable Ra against your callout.
What tolerances can you hold for CNC Milling Incoloy 800?
Achievable tolerances for Incoloy 800 machining depend on the alloy, geometry and feature size. Milling holds positional and dimensional tolerances to around ±0.01 mm, tighter with precision setups. Exact figures are confirmed against your drawing callouts.
What is the typical lead time and minimum order for CNC Milling Incoloy 800?
CNC Milling prototypes for Incoloy 800 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 Milling Incoloy 800 require dedicated tooling?
Most Incoloy 800 machining work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.