VT machining offers CNC Reaming for 431 Stainless Steel (UNS S43100 / 1.4057), typically supplied hardened & tempered. Best corrosion resistance of the martensitic grades with high toughness.
CNC Reaming Notes for 431 Stainless Steel
431 Stainless Steel can rub and close up behind the reamer, so we leave a consistent stock allowance and keep the reamer cutting rather than burnishing.
For estimating, a 100 × 100 × 10 mm block of 431 Stainless Steel weighs about 0.77 kg.
Starting Parameters for CNC Reaming 431 Stainless Steel
| Cutting speed (carbide) | 25-45 m/min |
|---|---|
| Stock allowance on Ø10 mm | 0.15-0.25 mm |
| Feed | 0.12-0.4 mm/rev |
| Spindle speed, Ø10 mm | 800-1430 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 Reaming Stainless Steel
Finishing options, quality documentation and general cnc reaming guidance for all stainless steel grades are on our CNC Reaming Stainless Steel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Reaming 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
Related
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
Does CNC Reaming 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.
What tolerances can you hold for CNC Reaming 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.
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 is CNC Reaming 431 Stainless Steel and how is it done?
CNC Reaming 431 Stainless Steel refers to reaming finishes drilled holes to a precise diameter and smooth surface in a single controlled pass. 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.