VT machining offers CNC Turning for 416 Stainless Steel (UNS S41600 / 1.4005), typically supplied annealed or hardened. Free-machining martensitic grade; highest machinability of all stainless steels.
CNC Turning Notes for 416 Stainless Steel
On the lathe 416 Stainless Steel needs chip-breaker inserts and constant chip load to avoid long, stringy swarf.
For estimating, a 100 × 100 × 10 mm block of 416 Stainless Steel weighs about 0.78 kg.
Starting Parameters for CNC Turning 416 Stainless Steel
| Cutting speed (carbide) | 190-350 m/min |
|---|---|
| Feed | 0.08-0.25 mm/rev |
| Spindle speed, Ø25 mm bar | 2420-4460 rpm |
| Insert / tool class | ISO M — positive-rake PVD/CVD carbide |
| Coolant | Flood emulsion (8-10%) or high-pressure coolant |
Starting values for 416 Stainless Steel, Annealed or hardened; optimised on the first article.
416 Stainless Steel Data Relevant to CNC Turning
| Equivalent designations | UNS S41600 / 1.4005 |
|---|---|
| Key composition | Cr 12-14%, S ≥0.15% |
| Typical supply condition | Annealed or hardened |
| Hardness (typical) | ~20 HRC annealed; up to ~40 HRC |
| Machinability rating | 85% (AISI B1112 = 100%) |
Typical values; we work to your drawing and mill certificate.
How 416 Stainless Steel Differs
Free-machining martensitic grade; highest machinability of all stainless steels.
Typical applications: Screw-machine parts, valve stems, gears, motor shafts.
416 Stainless Steel vs Similar Grades
| 416 Stainless Steel | 410 Stainless Steel | 420 Stainless Steel | 347 Stainless Steel | |
|---|---|---|---|---|
| Key composition | Cr 12-14%, S ≥0.15% | Cr 11.5-13.5% | Cr 12-14%, C 0.15-0.4% | Cr 17-19%, Ni 9-13%, Nb ≥10×C |
| Hardness | ~20 HRC annealed; up to ~40 HRC | ~20 HRC annealed; up to ~45 HRC hardened | Up to ~50 HRC | ≤92 HRB |
| Tensile (MPa) | ≥485 annealed | ≥450 annealed | ≥655 annealed | ≥515 |
| Machinability % | 85 | 55 | 45 | 36 |
| Typical use | Screw-machine parts, valve stems, gears, motor shafts | Valve trim, pump shafts, cutlery, fasteners | Surgical instruments, molds, knife blades | Aircraft exhaust, refinery parts |
More on CNC Turning Stainless Steel
Finishing options, quality documentation and general cnc turning guidance for all stainless steel grades are on our CNC Turning Stainless Steel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Turning 416 Stainless Steel
Send a STEP/IGES model or PDF drawing, confirm 416 Stainless Steel and its condition (we usually see it supplied annealed or hardened), the quantity, critical tolerances and any finish or certificate requirements.
416 Stainless Steel in Other Processes
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Send the drawing, the 416 Stainless Steel condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
Why is 416 Stainless Steel a good choice for CNC Turning?
416 Stainless Steel is corrosion resistant, strong and hygienic, which makes it well suited to CNC Turning. We tune the process to the alloy so the finished 416 Stainless Steel turning part meets your dimensional and functional requirements.
What surface finish is achievable on 416 Stainless Steel with CNC Turning?
Surface finish on 416 Stainless Steel is controlled to your specification; we confirm the achievable Ra against your callout.
Which industries use CNC Turning 416 Stainless Steel parts?
CNC Turning 416 Stainless Steel parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise 416 Stainless Steel components are required.
What is CNC Turning 416 Stainless Steel and how is it done?
CNC Turning 416 Stainless Steel refers to cNC turning rotates the workpiece against a single-point tool to produce cylindrical features, threads and grooves. Applied to 416 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 tolerances can you hold for CNC Turning 416 Stainless Steel?
Achievable tolerances for 416 Stainless Steel turning depend on the alloy, geometry and feature size. Turning holds diameter tolerances to around ±0.005 mm with concentricity within 0.01 mm. Exact figures are confirmed against your drawing callouts.
How clean are the edges produced by CNC Turning on 416 Stainless Steel?
Machined 416 Stainless Steel edges are clean and to specification; edge-break or deburring is added when your drawing calls for it.