VT machining offers CNC Milling for 310S Stainless Steel (UNS S31008 / 1.4845), typically supplied annealed. Low-carbon 310 for welded high-temperature parts.
CNC Milling Notes for 310S Stainless Steel
310S 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 310S Stainless Steel weighs about 0.79 kg.
Starting Parameters for CNC Milling 310S 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 310S Stainless Steel, Annealed; optimised on the first article.
310S Stainless Steel Data Relevant to CNC Milling
| Equivalent designations | UNS S31008 / 1.4845 |
|---|---|
| Key composition | Cr 24-26%, Ni 19-22%, C ≤0.08% |
| 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 310S Stainless Steel Differs
Low-carbon 310 for welded high-temperature parts.
Typical applications: Heat exchangers, furnace fixtures.
310S Stainless Steel vs Similar Grades
| 310S Stainless Steel | 310 Stainless Steel | 316 Stainless Steel | 309S Stainless Steel | |
|---|---|---|---|---|
| Key composition | Cr 24-26%, Ni 19-22%, C ≤0.08% | Cr 24-26%, Ni 19-22% | Cr 16-18%, Ni 10-14%, Mo 2-3% | Cr 22-24%, Ni 12-15%, C ≤0.08% |
| Hardness | ≤95 HRB | ≤95 HRB | ≤95 HRB | ≤95 HRB |
| Tensile (MPa) | ≥515 | ≥515 | ≥515 | ≥515 |
| Machinability % | 36 | 36 | 36 | 40 |
| Typical use | Heat exchangers, furnace fixtures | Furnace components, radiant tubes | Marine hardware, pump and valve parts, medical | Kiln fixtures, heat-treat baskets |
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 310S Stainless Steel
Send a STEP/IGES model or PDF drawing, confirm 310S Stainless Steel and its condition (we usually see it supplied annealed), the quantity, critical tolerances and any finish or certificate requirements.
310S Stainless Steel in Other Processes
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Send the drawing, the 310S 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 Milling 310S Stainless Steel require dedicated tooling?
Most 310S Stainless Steel machining work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
Which industries use CNC Milling 310S Stainless Steel parts?
CNC Milling 310S Stainless Steel parts are used across aerospace, medical, automotive, electronics, semiconductor and general industrial sectors — anywhere precise 310S Stainless Steel components are required.
Why is 310S Stainless Steel a good choice for CNC Milling?
310S 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 310S Stainless Steel machining part meets your dimensional and functional requirements.
What tolerances can you hold for CNC Milling 310S Stainless Steel?
Achievable tolerances for 310S 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.