VT machining offers CNC Turning for Inconel 625 (UNS N06625 / 2.4856), typically supplied annealed. Solid-solution strengthened; excellent corrosion and fatigue resistance.
CNC Turning Notes for Inconel 625
On the lathe Inconel 625 needs chip-breaker inserts and constant chip load to avoid long, stringy swarf.
For estimating, a 100 × 100 × 10 mm block of Inconel 625 weighs about 0.84 kg.
Starting Parameters for CNC Turning Inconel 625
| Cutting speed (carbide) | 20-50 m/min |
|---|---|
| Feed | 0.05-0.15 mm/rev |
| Spindle speed, Ø25 mm bar | 250-640 rpm |
| Insert / tool class | ISO S — sharp PVD-coated carbide |
| Coolant | High-pressure emulsion; ceramic inserts run dry for roughing |
Starting values for Inconel 625, Annealed; optimised on the first article.
Inconel 625 Data Relevant to CNC Turning
| 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 Turning Inconel
Finishing options, quality documentation and general cnc turning guidance for all inconel grades are on our CNC Turning Inconel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Turning 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
Which industries use CNC Turning Inconel 625 parts?
CNC Turning Inconel 625 parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise Inconel 625 components are required.
What is the typical lead time and minimum order for CNC Turning Inconel 625?
CNC Turning 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.
Can VT machining make custom Inconel 625 parts to my drawing?
Yes. Inconel 625 turning 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.
What material thickness or size range suits CNC Turning Inconel 625?
Turned Inconel 625 parts are produced from bar or chuck stock across a wide diameter range.
Why is Inconel 625 a good choice for CNC Turning?
Inconel 625 is high-temperature strength and oxidation resistance, which makes it well suited to CNC Turning. We tune the process to the alloy so the finished Inconel 625 turning part meets your dimensional and functional requirements.