VT machining offers CNC Turning for 201 Stainless Steel (UNS S20100 / 1.4372 / SUS201), typically supplied annealed. Low-nickel substitute for 304; manganese raises strength but lowers corrosion resistance and work-hardens faster.
CNC Turning Notes for 201 Stainless Steel
On the lathe 201 Stainless Steel needs chip-breaker inserts and constant chip load to avoid long, stringy swarf.
For estimating, a 100 × 100 × 10 mm block of 201 Stainless Steel weighs about 0.78 kg.
Starting Parameters for CNC Turning 201 Stainless Steel
| Cutting speed (carbide) | 105-195 m/min |
|---|---|
| Feed | 0.08-0.25 mm/rev |
| Spindle speed, Ø25 mm bar | 1340-2480 rpm |
| Insert / tool class | ISO M — positive-rake PVD/CVD carbide |
| Coolant | Flood emulsion (8-10%) or high-pressure coolant |
Starting values for 201 Stainless Steel, Annealed; optimised on the first article.
201 Stainless Steel Data Relevant to CNC Turning
| Equivalent designations | UNS S20100 / 1.4372 / SUS201 |
|---|---|
| Key composition | Cr 16-18%, Ni 3.5-5.5%, Mn 5.5-7.5% |
| Typical supply condition | Annealed |
| Hardness (typical) | ≤95 HRB |
| Machinability rating | 40% (AISI B1112 = 100%) |
Typical values; we work to your drawing and mill certificate.
How 201 Stainless Steel Differs
Low-nickel substitute for 304; manganese raises strength but lowers corrosion resistance and work-hardens faster.
Typical applications: Appliance trim, sinks, cookware, decorative hardware.
201 Stainless Steel vs Similar Grades
| 201 Stainless Steel | 202 Stainless Steel | 301 Stainless Steel | T301 Stainless Steel | |
|---|---|---|---|---|
| Key composition | Cr 16-18%, Ni 3.5-5.5%, Mn 5.5-7.5% | Cr 17-19%, Ni 4-6%, Mn 7.5-10% | Cr 16-18%, Ni 6-8% | Cr 16-18%, Ni 6-8% |
| Hardness | ≤95 HRB | ≤95 HRB | Up to ~45 HRC (full hard) | ~40-50 HRC by temper |
| Tensile (MPa) | ≥515 | ≥620 | 515-1300 by temper | 930-1800 |
| Machinability % | 40 | 40 | 40 | 35 |
| Typical use | Appliance trim, sinks, cookware, decorative hardware | Kitchen equipment, automotive trim | Springs, clips, stamped brackets, conveyor belts | Precision springs, shims, etched flat 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 201 Stainless Steel
Send a STEP/IGES model or PDF drawing, confirm 201 Stainless Steel and its condition (we usually see it supplied annealed), the quantity, critical tolerances and any finish or certificate requirements.
201 Stainless Steel in Other Processes
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Send the drawing, the 201 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 201 Stainless Steel with CNC Turning?
Surface finish on 201 Stainless Steel is controlled to your specification; we confirm the achievable Ra against your callout.
What material thickness or size range suits CNC Turning 201 Stainless Steel?
Turned 201 Stainless Steel parts are produced from bar or chuck stock across a wide diameter range.
Which industries use CNC Turning 201 Stainless Steel parts?
CNC Turning 201 Stainless Steel parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise 201 Stainless Steel components are required.
Does CNC Turning 201 Stainless Steel require dedicated tooling?
Most 201 Stainless Steel turning work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
What is the typical lead time and minimum order for CNC Turning 201 Stainless Steel?
CNC Turning prototypes for 201 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.
What tolerances can you hold for CNC Turning 201 Stainless Steel?
Achievable tolerances for 201 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.