316L Marine & Medical Stainless Steel Machining Guide
316L is a low-carbon austenitic stainless steel enhanced with molybdenum, providing superior resistance to chlorides, pitting, and marine/medical corrosion.
Engineering Specifications & Parameters
Density
8.00 g/cm³
Hardness
79 Rockwell B (HRB)
Cutting Speed
80 - 140 m/min
Machinability
40% (Tough)
Yield Strength
220 MPa (32,000 psi)
Overview & Applications
316L is standard for medical implants, marine hardware, and chemical processing equipment. Its low carbon content prevents sensitization during welding.
Machining Recommendations
Rigidity: Ensure high machine and fixture rigidity to suppress chatter.
Tool Coatings: AlTiN or TiSiN multi-layer coatings for high thermal stability.
Coolant: High-lubricity water-soluble oil at 8-12% concentration.
Frequently Asked Questions
What makes 316L better than 304 for medical components?
The addition of 2-3% molybdenum significantly increases resistance to pitting and crevice corrosion in saline and biological environments.
