VT machining offers CNC Punching for 8620 Alloy Steel (UNS G86200 / 20NiCrMo2-2 / SNCM220), typically supplied annealed, then carburised. Carburising steel: tough core with hard case.
CNC Punching Notes for 8620 Alloy Steel
8620 Alloy Steel punches cleanly with standard clearance; minimum hole diameter is about the sheet thickness.
For estimating, a 100 × 100 × 10 mm block of 8620 Alloy Steel weighs about 0.79 kg.
Process Data for CNC Punching 8620 Alloy Steel
| Die clearance per side | 9% of thickness (0.18 mm at 2 mm) |
|---|---|
| Punch force, Ø10 hole in 2 mm | ~29.7 kN (3 t) |
| Minimum hole diameter | ≥ 1 × thickness |
Typical values for 8620 Alloy Steel, Annealed, then carburised; confirmed on the first part.
8620 Alloy Steel Data Relevant to CNC Punching
| Equivalent designations | UNS G86200 / 20NiCrMo2-2 / SNCM220 |
|---|---|
| Typical supply condition | Annealed, then carburised |
| Hardness (typical) | ~150-180 HB core; ~58-62 HRC case |
| Tensile strength | ~530-650 MPa |
Typical values; we work to your drawing and mill certificate.
More on CNC Punching Alloy Steel
Finishing options, quality documentation and general cnc punching guidance for all alloy steel grades are on our CNC Punching Alloy Steel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Punching 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
What surface finish is achievable on 8620 Alloy Steel with CNC Punching?
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 Punching 8620 Alloy Steel?
Achievable tolerances for 8620 Alloy Steel punching depend on the alloy, geometry and feature size. Punching holds hole-position repeatability to around ±0.10 mm. Exact figures are confirmed against your drawing callouts.
What material thickness or size range suits CNC Punching 8620 Alloy Steel?
Punching suits 8620 Alloy Steel sheet roughly 0.5–6 mm thick, with clearance matched to the gauge.
What is the typical lead time and minimum order for CNC Punching 8620 Alloy Steel?
CNC Punching prototypes for 8620 Alloy Steel can be produced quickly and scaled to series production. Send your drawing and quantity and we will advise lead time and any minimum order.