VT machining offers CNC Milling for Inconel 625 (UNS N06625 / 2.4856), typically supplied annealed. Solid-solution strengthened; excellent corrosion and fatigue resistance.
CNC Milling Notes for Inconel 625
We use high-efficiency toolpaths with constant engagement on Inconel 625 to keep cutting temperature and tool wear under control.
For estimating, a 100 × 100 × 10 mm block of Inconel 625 weighs about 0.84 kg.
Starting Parameters for CNC Milling Inconel 625
| Cutting speed (carbide) | 15-45 m/min |
|---|---|
| Feed per tooth | 0.018-0.053 mm |
| Spindle speed, Ø10 mm end mill | 480-1430 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 | 12.8 µm (CTE 12.8 µm/m·K) |
Starting values for Inconel 625, Annealed; optimised on the first article.
Inconel 625 Data Relevant to CNC Milling
| Equivalent designations | UNS N06625 / 2.4856 |
|---|---|
| Key composition | Ni ≥58%, Cr 20-23%, Mo 8-10%, Nb 3.15-4.15% |
| Typical supply condition | Annealed |
| Hardness (typical) | ~95 HRB-25 HRC |
| Machinability rating | 12% (AISI B1112 = 100%) |
Typical values; we work to your drawing and mill certificate.
How Inconel 625 Differs
Solid-solution strengthened; excellent corrosion and fatigue resistance.
Typical applications: Marine, aerospace ducting, chemical.
Inconel 625 vs Similar Grades
| Inconel 625 | Inconel 600 | Inconel 718 | Incoloy 800 | |
|---|---|---|---|---|
| Key composition | Ni ≥58%, Cr 20-23%, Mo 8-10%, Nb 3.15-4.15% | Ni ≥72%, Cr 14-17%, Fe 6-10% | Ni 50-55%, Cr 17-21%, Nb 4.75-5.5%, Mo | Ni 30-35%, Cr 19-23%, Fe bal. |
| Hardness | ~95 HRB-25 HRC | ~75-90 HRB | Up to ~40-45 HRC aged | ~75-85 HRB |
| Tensile (MPa) | ~830-930 | ~620 | ~1240-1400 aged | ~600 |
| Machinability % | 12 | 15 | 10 | 20 |
| Typical use | Marine, aerospace ducting, chemical | Furnace parts, heat-treat fixtures, nuclear | Turbine discs, fasteners, oil & gas tools | Heat exchangers, furnace parts |
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 Inconel 625
Send a STEP/IGES model or PDF drawing, confirm Inconel 625 and its condition (we usually see it supplied annealed), the quantity, critical tolerances and any finish or certificate requirements.
Inconel 625 in Other Processes
Related
Send the drawing, the Inconel 625 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 Milling Inconel 625?
CNC Milling prototypes for Inconel 625 can be produced quickly and scaled to series production. Send your drawing and quantity and we will advise lead time and any minimum order.
Which industries use CNC Milling Inconel 625 parts?
CNC Milling Inconel 625 parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise Inconel 625 components are required.
What surface finish is achievable on Inconel 625 with CNC Milling?
Surface finish on Inconel 625 is controlled to your specification; we confirm the achievable Ra against your callout.
Can VT machining make custom Inconel 625 parts to my drawing?
Yes. Inconel 625 machining 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.
Does CNC Milling Inconel 625 require dedicated tooling?
Most Inconel 625 machining work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.