VT machining offers CNC Sinker EDM for A36 Steel (ASTM A36 / ~S275JR / Q235B), typically supplied hot-rolled. General structural plate; cheap and weldable, mill scale must be removed.
CNC Sinker EDM Notes for A36 Steel
Cavities and blind forms in A36 Steel are sunk with graphite or copper electrodes.
Process Data for CNC Sinker EDM A36 Steel
| Electrode | Graphite (roughing) / copper (fine finish) |
|---|---|
| Relative removal rate | High (vs tool steel = medium) |
| Best finish | VDI 12-18 (Ra 0.4-0.8 µm) |
Typical values for A36 Steel, Hot-rolled; confirmed on the first part.
Full material data for A36 Steel (ASTM A36 / ~S275JR / Q235B) is on the CNC Wire EDM A36 Steel page.
More on CNC Sinker EDM Steel
Finishing options, quality documentation and general cnc sinker edm guidance for all steel grades are on our CNC Sinker EDM Steel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Sinker EDM A36 Steel
Send a STEP/IGES model or PDF drawing, confirm A36 Steel and its condition (we usually see it supplied hot-rolled), the quantity, critical tolerances and any finish or certificate requirements.
A36 Steel in Other Processes
Related
Send the drawing, the A36 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 A36 Steel?
Yes. EDM removes material by electrical discharge rather than cutting force, so hardened and difficult A36 Steel can be machined to fine detail and tight tolerance without distortion.
Does CNC Sinker EDM A36 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 A36 Steel with CNC Sinker EDM?
Surface finish on A36 Steel is controlled to your specification; we confirm the achievable Ra against your callout.
What material thickness or size range suits CNC Sinker EDM A36 Steel?
We machine A36 Steel across a broad size range; share your part envelope for confirmation.
What tolerances can you hold for CNC Sinker EDM A36 Steel?
Achievable tolerances for A36 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.
What is the typical lead time and minimum order for CNC Sinker EDM A36 Steel?
CNC Sinker EDM prototypes for A36 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.