316 stainless steel is more challenging to mill than 304 due to its higher molybdenum content. It requires aggressive chip loads, rigid setups, and premium tooling to prevent work-hardening and achieve good results.
| Parameter | Value |
|---|---|
| Achievable Tolerances | ±0.01 mm (±0.0004") |
| Surface Finish | Ra 0.8-3.2 μm |
| Cutting Speed | 40-80 m/min (SFM 130-260) |
| Feed Rate | 0.05-0.10 mm/tooth |
| Tooling Recommendations | Premium carbide with AlTiN or nanocomposite coatings. 4-5 flute end mills with variable helix. |
Use even more aggressive feeds than 304 to stay ahead of work-hardening
High-pressure coolant is essential
Reduce depth of cut rather than feed rate
Program constant engagement toolpaths
Avoid dwelling in corners
Marine valve bodies
Surgical instrument components
Pharmaceutical mixers
Chemical pump housings
Offshore fasteners
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