VT machining offers CNC Sinker EDM for 347 Stainless Steel (UNS S34700 / 1.4550), typically supplied annealed. Niobium-stabilised alternative to 321, better for welded high-temperature service.
CNC Sinker EDM Notes for 347 Stainless Steel
Cavities and blind forms in 347 Stainless Steel are sunk with graphite or copper electrodes.
Process Data for CNC Sinker EDM 347 Stainless Steel
| Electrode | Graphite (roughing) / copper (fine finish) |
|---|---|
| Relative removal rate | Medium (vs tool steel = medium) |
| Best finish | VDI 12-18 (Ra 0.4-0.8 µm) |
Typical values for 347 Stainless Steel, Annealed; confirmed on the first part.
Full material data for 347 Stainless Steel (UNS S34700 / 1.4550) is on the CNC Wire EDM 347 Stainless Steel page.
More on CNC Sinker EDM Stainless Steel
Finishing options, quality documentation and general cnc sinker edm guidance for all stainless steel grades are on our CNC Sinker EDM Stainless Steel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Sinker EDM 347 Stainless Steel
Send a STEP/IGES model or PDF drawing, confirm 347 Stainless Steel and its condition (we usually see it supplied annealed), the quantity, critical tolerances and any finish or certificate requirements.
347 Stainless Steel in Other Processes
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Send the drawing, the 347 Stainless Steel condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
Why is 347 Stainless Steel a good choice for CNC Sinker EDM?
347 Stainless Steel is corrosion resistant, strong and hygienic, which makes it well suited to CNC Sinker EDM. We tune the process to the alloy so the finished 347 Stainless Steel EDM machining part meets your dimensional and functional requirements.
Can VT machining make custom 347 Stainless Steel parts to my drawing?
Yes. 347 Stainless Steel EDM 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.
What tolerances can you hold for CNC Sinker EDM 347 Stainless Steel?
Achievable tolerances for 347 Stainless Steel EDM machining depend on the alloy, geometry and feature size. EDM holds tolerances to around ±0.002 mm with no cutting force on the part. Exact figures are confirmed against your drawing callouts.
Can you EDM-machine hardened 347 Stainless Steel?
Yes. EDM removes material by electrical discharge rather than cutting force, so hardened and difficult 347 Stainless Steel can be machined to fine detail and tight tolerance without distortion.
Does CNC Sinker EDM 347 Stainless Steel require dedicated tooling?
Wire EDM needs no shaped tooling; sinker EDM uses a shaped electrode we produce in-house for your cavity.
What surface finish is achievable on 347 Stainless Steel with CNC Sinker EDM?
Surface finish on 347 Stainless Steel is controlled to your specification; we confirm the achievable Ra against your callout.