VT machining offers CNC Tapping for 431 Stainless Steel (UNS S43100 / 1.4057), typically supplied hardened & tempered. Best corrosion resistance of the martensitic grades with high toughness.
CNC Tapping Notes for 431 Stainless Steel
431 Stainless Steel is tapped with cut taps (spiral-point for through holes) and controlled rigid-tapping speed; thread milling is used where tap breakage would be costly.
For estimating, a 100 × 100 × 10 mm block of 431 Stainless Steel weighs about 0.77 kg.
Starting Parameters for CNC Tapping 431 Stainless Steel
| Cutting speed (carbide) | 5-10 m/min |
|---|---|
| Recommended tap | Cut tap: spiral-point (through) / spiral-flute (blind) |
| Tap drill for M8×1.25 | Ø6.8 mm (cut tap) |
| Spindle speed, M8 | 200-400 rpm |
| Insert / tool class | ISO H — CBN or fine-grain carbide |
| Coolant | Flood emulsion (8-10%) or high-pressure coolant |
Starting values for 431 Stainless Steel, Hardened & tempered; optimised on the first article.
Full material data for 431 Stainless Steel (UNS S43100 / 1.4057) is on the CNC Milling 431 Stainless Steel page.
More on CNC Tapping Stainless Steel
Finishing options, quality documentation and general cnc tapping guidance for all stainless steel grades are on our CNC Tapping Stainless Steel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Tapping 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
What is the typical lead time and minimum order for CNC Tapping 431 Stainless Steel?
CNC Tapping prototypes for 431 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.
Can VT machining make custom 431 Stainless Steel parts to my drawing?
Yes. 431 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 Tapping 431 Stainless Steel?
Achievable tolerances for 431 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 Tapping 431 Stainless Steel and how is it done?
CNC Tapping 431 Stainless Steel refers to rigid CNC tapping cuts internal threads in sync with spindle feed for precise, repeatable thread engagement. 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.
What surface finish is achievable on 431 Stainless Steel with CNC Tapping?
Surface finish on 431 Stainless Steel is controlled to your specification; we confirm the achievable Ra against your callout.
Does CNC Tapping 431 Stainless Steel require dedicated tooling?
Most 431 Stainless Steel machining work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.