VT machining offers CNC Milling for 416 Stainless Steel (UNS S41600 / 1.4005), typically supplied annealed or hardened. Free-machining martensitic grade; highest machinability of all stainless steels.
CNC Milling Notes for 416 Stainless Steel
416 Stainless Steel mills well with conventional strategies; finishing passes are planned to meet flatness and finish callouts.
For estimating, a 100 × 100 × 10 mm block of 416 Stainless Steel weighs about 0.78 kg.
Starting Parameters for CNC Milling 416 Stainless Steel
| Cutting speed (carbide) | 165-300 m/min |
|---|---|
| Feed per tooth | 0.028-0.088 mm |
| Spindle speed, Ø10 mm end mill | 5250-9550 rpm |
| Insert / tool class | ISO M — positive-rake PVD/CVD carbide |
| Coolant | Flood emulsion (8-10%) or high-pressure coolant |
| Thermal growth, 100 mm part, +10 °C | 9.9 µm (CTE 9.9 µm/m·K) |
Starting values for 416 Stainless Steel, Annealed or hardened; optimised on the first article.
416 Stainless Steel Data Relevant to CNC Milling
| 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 Milling Stainless Steel
Finishing options, quality documentation and general cnc milling guidance for all stainless steel grades are on our CNC Milling Stainless Steel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Milling 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
Which industries use CNC Milling 416 Stainless Steel parts?
CNC Milling 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 surface finish is achievable on 416 Stainless Steel with CNC Milling?
Surface finish on 416 Stainless Steel is controlled to your specification; we confirm the achievable Ra against your callout.
Can VT machining make custom 416 Stainless Steel parts to my drawing?
Yes. 416 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.
Why is 416 Stainless Steel a good choice for CNC Milling?
416 Stainless Steel is corrosion resistant, strong and hygienic, which makes it well suited to CNC Milling. We tune the process to the alloy so the finished 416 Stainless Steel machining part meets your dimensional and functional requirements.
What tolerances can you hold for CNC Milling 416 Stainless Steel?
Achievable tolerances for 416 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 Milling 416 Stainless Steel and how is it done?
CNC Milling 416 Stainless Steel refers to multi-axis milling cutters remove material to produce prismatic features, pockets, slots and contoured 3D surfaces. 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.