VT machining offers CNC Sinker EDM for 431 Stainless Steel (UNS S43100 / 1.4057), typically supplied hardened & tempered. Best corrosion resistance of the martensitic grades with high toughness.
CNC Sinker EDM Notes for 431 Stainless Steel
Cavities and blind forms in 431 Stainless Steel are sunk with graphite or copper electrodes.
Process Data for CNC Sinker EDM 431 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 431 Stainless Steel, Hardened & tempered; confirmed on the first part.
Full material data for 431 Stainless Steel (UNS S43100 / 1.4057) is on the CNC Wire EDM 431 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 431 Stainless Steel
Send a STEP/IGES model or PDF drawing, confirm 431 Stainless Steel and its condition (we usually see it supplied hardened & tempered), the quantity, critical tolerances and any finish or certificate requirements.
431 Stainless Steel in Other Processes
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Send the drawing, the 431 Stainless Steel condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
Can you EDM-machine hardened 431 Stainless Steel?
Yes. EDM removes material by electrical discharge rather than cutting force, so hardened and difficult 431 Stainless Steel can be machined to fine detail and tight tolerance without distortion.
What surface finish is achievable on 431 Stainless Steel with CNC Sinker EDM?
Surface finish on 431 Stainless Steel is controlled to your specification; we confirm the achievable Ra against your callout.
Does CNC Sinker EDM 431 Stainless Steel require dedicated tooling?
Wire EDM needs no shaped tooling; sinker EDM uses a shaped electrode we produce in-house for your cavity.
Can VT machining make custom 431 Stainless Steel parts to my drawing?
Yes. 431 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 is CNC Sinker EDM 431 Stainless Steel and how is it done?
CNC Sinker EDM 431 Stainless Steel refers to sinker (die-sink) EDM burns a shaped electrode into metal to form precise cavities and blind features. Applied to 431 Stainless Steel — corrosion resistant, strong and hygienic — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.
Why is 431 Stainless Steel a good choice for CNC Sinker EDM?
431 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 431 Stainless Steel EDM machining part meets your dimensional and functional requirements.