VT machining offers CNC Engraving for 303 Stainless Steel (UNS S30300 / 1.4305 / SUS303), typically supplied annealed. Sulfur addition makes it the most machinable austenitic grade, at the cost of weldability and some corrosion resistance.
CNC Engraving Notes for 303 Stainless Steel
303 Stainless Steel takes crisp engraved text and logos; depth and stroke width are set so the marking survives any later finishing.
For estimating, a 100 × 100 × 10 mm block of 303 Stainless Steel weighs about 0.79 kg.
Starting Parameters for CNC Engraving 303 Stainless Steel
| Cutting speed (carbide) | 105-195 m/min |
|---|---|
| Feed per tooth | 0.028-0.088 mm |
| Spindle speed, Ø1 mm end mill | 24000-24000 rpm |
| Insert / tool class | ISO M — positive-rake PVD/CVD carbide |
| Coolant | Flood emulsion (8-10%) or high-pressure coolant |
Starting values for 303 Stainless Steel, Annealed; optimised on the first article.
Full material data for 303 Stainless Steel (UNS S30300 / 1.4305 / SUS303) is on the CNC Milling 303 Stainless Steel page.
More on CNC Engraving Stainless Steel
Finishing options, quality documentation and general cnc engraving guidance for all stainless steel grades are on our CNC Engraving Stainless Steel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Engraving 303 Stainless Steel
Send a STEP/IGES model or PDF drawing, confirm 303 Stainless Steel and its condition (we usually see it supplied annealed), the quantity, critical tolerances and any finish or certificate requirements.
303 Stainless Steel in Other Processes
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Send the drawing, the 303 Stainless 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 303 Stainless Steel with CNC Engraving?
Surface finish on 303 Stainless Steel is controlled to your specification; we confirm the achievable Ra against your callout.
Can VT machining make custom 303 Stainless Steel parts to my drawing?
Yes. 303 Stainless Steel 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 Engraving 303 Stainless Steel?
Achievable tolerances for 303 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 the typical lead time and minimum order for CNC Engraving 303 Stainless Steel?
CNC Engraving prototypes for 303 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.
Does CNC Engraving 303 Stainless Steel require dedicated tooling?
Most 303 Stainless Steel machining work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
Why is 303 Stainless Steel a good choice for CNC Engraving?
303 Stainless Steel is corrosion resistant, strong and hygienic, which makes it well suited to CNC Engraving. We tune the process to the alloy so the finished 303 Stainless Steel machining part meets your dimensional and functional requirements.