VT machining offers CNC Milling for 316L Stainless Steel (UNS S31603 / 1.4404), typically supplied annealed. Low-carbon 316 for welded and implant-grade parts.
CNC Milling Notes for 316L Stainless Steel
316L 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 316L Stainless Steel weighs about 0.80 kg.
Starting Parameters for CNC Milling 316L Stainless Steel
| Cutting speed (carbide) | 80-150 m/min |
|---|---|
| Feed per tooth | 0.028-0.088 mm |
| Spindle speed, Ø10 mm end mill | 2550-4770 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 | 16.5 µm (CTE 16.5 µm/m·K) |
Starting values for 316L Stainless Steel, Annealed; optimised on the first article.
316L Stainless Steel Data Relevant to CNC Milling
| Equivalent designations | UNS S31603 / 1.4404 |
|---|---|
| Key composition | Cr 16-18%, Ni 10-14%, Mo 2-3%, C ≤0.03% |
| Typical supply condition | Annealed |
| Hardness (typical) | ≤95 HRB |
| Machinability rating | 36% (AISI B1112 = 100%) |
Typical values; we work to your drawing and mill certificate.
How 316L Stainless Steel Differs
Low-carbon 316 for welded and implant-grade parts.
Typical applications: Medical devices, pharma fittings, marine welds.
316L Stainless Steel vs Similar Grades
| 316L Stainless Steel | 316 Stainless Steel | 317L Stainless Steel | 310S Stainless Steel | |
|---|---|---|---|---|
| Key composition | Cr 16-18%, Ni 10-14%, Mo 2-3%, C ≤0.03% | Cr 16-18%, Ni 10-14%, Mo 2-3% | Cr 18-20%, Ni 11-15%, Mo 3-4% | Cr 24-26%, Ni 19-22%, C ≤0.08% |
| Hardness | ≤95 HRB | ≤95 HRB | ≤95 HRB | ≤95 HRB |
| Tensile (MPa) | ≥485 | ≥515 | ≥515 | ≥515 |
| Machinability % | 36 | 36 | 32 | 36 |
| Typical use | Medical devices, pharma fittings, marine welds | Marine hardware, pump and valve parts, medical | Chemical process equipment, flue-gas parts | Heat exchangers, furnace fixtures |
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 316L Stainless Steel
Send a STEP/IGES model or PDF drawing, confirm 316L Stainless Steel and its condition (we usually see it supplied annealed), the quantity, critical tolerances and any finish or certificate requirements.
316L Stainless Steel in Other Processes
Related
Send the drawing, the 316L 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 CNC Milling 316L Stainless Steel and how is it done?
CNC Milling 316L Stainless Steel refers to multi-axis milling cutters remove material to produce prismatic features, pockets, slots and contoured 3D surfaces. Applied to 316L 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.
Can VT machining make custom 316L Stainless Steel parts to my drawing?
Yes. 316L 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 the typical lead time and minimum order for CNC Milling 316L Stainless Steel?
CNC Milling prototypes for 316L 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 Milling 316L Stainless Steel?
Achievable tolerances for 316L 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.
Why is 316L Stainless Steel a good choice for CNC Milling?
316L 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 316L Stainless Steel machining part meets your dimensional and functional requirements.