VT machining offers CNC Reaming for 8620 Alloy Steel (UNS G86200 / 20NiCrMo2-2 / SNCM220), typically supplied annealed, then carburised. Carburising steel: tough core with hard case.
CNC Reaming Notes for 8620 Alloy Steel
Reaming 8620 Alloy Steel gives H7 holes with a fine finish; stock allowance is set by hole diameter so the reamer cuts cleanly.
For estimating, a 100 × 100 × 10 mm block of 8620 Alloy Steel weighs about 0.79 kg.
Starting Parameters for CNC Reaming 8620 Alloy Steel
| Cutting speed (carbide) | 40-65 m/min |
|---|---|
| Stock allowance on Ø10 mm | 0.10-0.20 mm |
| Feed | 0.15-0.48 mm/rev |
| Spindle speed, Ø10 mm | 1270-2070 rpm |
| Insert / tool class | ISO P — CVD-coated carbide |
| Coolant | Emulsion (6-8%) |
Starting values for 8620 Alloy Steel, Annealed, then carburised; optimised on the first article.
Full material data for 8620 Alloy Steel (UNS G86200 / 20NiCrMo2-2 / SNCM220) is on the CNC Milling 8620 Alloy Steel page.
More on CNC Reaming Alloy Steel
Finishing options, quality documentation and general cnc reaming guidance for all alloy steel grades are on our CNC Reaming Alloy Steel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Reaming 8620 Alloy Steel
Send a STEP/IGES model or PDF drawing, confirm 8620 Alloy Steel and its condition (we usually see it supplied annealed, then carburised), the quantity, critical tolerances and any finish or certificate requirements.
8620 Alloy Steel in Other Processes
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Send the drawing, the 8620 Alloy Steel condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
Does CNC Reaming 8620 Alloy Steel require dedicated tooling?
Most 8620 Alloy Steel machining work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
What material thickness or size range suits CNC Reaming 8620 Alloy Steel?
We machine 8620 Alloy Steel across a broad size range; share your part envelope for confirmation.
What surface finish is achievable on 8620 Alloy Steel with CNC Reaming?
Surface finish on 8620 Alloy Steel is controlled to your specification; we confirm the achievable Ra against your callout.
What tolerances can you hold for CNC Reaming 8620 Alloy Steel?
Achievable tolerances for 8620 Alloy Steel 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.