Materials reference
Maraging Steel MS1
What is it?
Maraging Steel MS1 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 | 18Ni-250 class W.Nr 1.2709 family (EOS sells separate ToolSteel 1.2709; EN X3NiCoMoTi 18 9 5) - exact equivalence to the listed designation not independently verifiedOEM ↗ · 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
Two-step: solution anneal + age harden 490C/914F 6 h in vacuum/inert gas (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
| Referenced platform | Evidence scope |
|---|---|
| EOS LPBF line | Portfolio evidence only; exact machine, parameters and qualification must be confirmedOEM ↗ · Source reviewed |
Manufacturing considerations
- embrittlement if aging overdone
- Ti/Co burn-off requires powder-refresh discipline
- Hardness designation not independently verified.