VT machining offers CNC Drilling for 904L Stainless Steel (UNS N08904 / 1.4539), typically supplied annealed. Super-austenitic grade for sulfuric acid and seawater; very gummy to cut.
CNC Drilling Notes for 904L Stainless Steel
Drilling 904L Stainless Steel uses through-coolant carbide drills and peck cycles, because the chip tends to weld and the hole wall work-hardens if the drill dwells.
For estimating, a 100 × 100 × 10 mm block of 904L Stainless Steel weighs about 0.80 kg.
Starting Parameters for CNC Drilling 904L Stainless Steel
| Cutting speed (carbide) | 45-80 m/min |
|---|---|
| Feed, Ø8 mm drill | 0.064-0.175 mm/rev |
| Spindle speed, Ø8 mm | 1790-3180 rpm |
| Peck depth | 0.5-1 × D (through-coolant preferred) |
| Insert / tool class | ISO M — positive-rake PVD/CVD carbide |
| Coolant | Flood emulsion (8-10%) or high-pressure coolant |
Starting values for 904L Stainless Steel, Annealed; optimised on the first article.
Full material data for 904L Stainless Steel (UNS N08904 / 1.4539) is on the CNC Milling 904L Stainless Steel page.
More on CNC Drilling Stainless Steel
Finishing options, quality documentation and general cnc drilling guidance for all stainless steel grades are on our CNC Drilling Stainless Steel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Drilling 904L Stainless Steel
Send a STEP/IGES model or PDF drawing, confirm 904L Stainless Steel and its condition (we usually see it supplied annealed), the quantity, critical tolerances and any finish or certificate requirements.
904L Stainless Steel in Other Processes
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Send the drawing, the 904L Stainless Steel condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
What tolerances can you hold for CNC Drilling 904L Stainless Steel?
Achievable tolerances for 904L Stainless 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.
What is CNC Drilling 904L Stainless Steel and how is it done?
CNC Drilling 904L Stainless Steel refers to programmed drilling produces accurately positioned holes, including deep and pattern hole arrays. Applied to 904L 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 904L Stainless Steel a good choice for CNC Drilling?
904L Stainless Steel is corrosion resistant, strong and hygienic, which makes it well suited to CNC Drilling. We tune the process to the alloy so the finished 904L Stainless Steel machining part meets your dimensional and functional requirements.
What is the typical lead time and minimum order for CNC Drilling 904L Stainless Steel?
CNC Drilling prototypes for 904L Stainless 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.