Materials reference
Stainless Steel 316L (EOS 316L-4441/4404)
What is it?
Stainless Steel 316L (EOS 316L-4441/4404) is a metal alloy selected for particular strength, temperature, weight or manufacturing needs.
Why would someone print it?
Printing may help create complex shapes or low-volume parts, but the complete finishing and inspection route still matters.
What should a beginner know?
- Confirm the exact machine, material settings and acceptance requirements.
- A material listing does not by itself qualify a production part.
What happens after printing?
Printed parts may need heat treatment, support removal, machining, finishing and inspection before they are accepted.
What is an alloy?
What does this mean? An alloy is a defined metal composition. Why does it matter? Composition, process settings and post-processing affect the finished part.
New to AM? Start with the 5-minute guide →
Technical material evidence
LPBF
| Property | Evidence |
|---|---|
| Designations | AISI 316L UNS S31603 EN 1.4404 / 1.4441 (EOS sells both; 4441=UNS S31673 per EOS)OEM ↗ · Source reviewed |
| Nominal material density | Density not verified for this alloy |
| Powder price | Current supplier quote required No public powder list price was captured in the supplied source review. Obtain a current supplier quote. |
Post-processing evidence
Stress relief 900C min 2h; solution anneal 1150C (4441) / 1100C (4404) min 1.5h water quench; HT per AMS 2759 optional (EOS data sheet)
OEM ↗ · Source reviewedThis is a research summary, not a production heat-treatment instruction. Use the current OEM material datasheet, qualified parameter set and application-specific acceptance requirements.
Machine and process compatibility
Manufacturing considerations
- as-built corrosion resistance lowered; solution treatment needed for full resistance
- layerwise anisotropy (OEM text)