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Ultra-high-strength tool steel — hardens after ageing with low distortion.
Maraging steel 3D printing at KAD3D — Ultra-high-strength tool steel — hardens after ageing with low distortion.
18Ni300 maraging steel (EOS MS1) is a high-strength tooling steel printed by laser powder-bed fusion. It prints tough and machinable, then a simple ageing treatment takes it to roughly 2000 MPa and ~54 HRC with minimal distortion — ideal for tooling, inserts and high-load parts.
Maraging tool steel is used for high-strength tooling — injection-mould inserts with conformal cooling, dies and jigs — where hardness and dimensional stability under load are critical.
Typical applications include Injection-mould inserts, conformal-cooled tooling, high-load fixtures, and dies.
Produced with SLM, Maraging steel 3D printing typically offers a tensile strength around 2000 MPa, elongation at break near 4%, a density of 8 g/cm³, a hardness of ~54 HRC (aged) and water absorption around 0%. Full technical data is listed in the table below.
For dimensional work, Maraging Steel 18Ni300 supports a typical layer height or tolerance of ±0.10–0.20 mm or ±0.2% (pre-machining).
This makes Maraging Steel 18Ni300 a strong choice for parts that need metal, end-use production, heat over 100 °c and fatigue-resistant.
Finishing options for Maraging Steel 18Ni300 include Heat Treatment, Machining and Polishing.
Standard turnaround for Maraging Steel 18Ni300 is 20 business days, with an express option in 8–10 business days, from order confirmation and delivered Australia-wide.
Often chosen by Melbourne and Geelong tooling shops for conformal-cooled mould inserts and high-load tooling, where printed maraging steel shortens tooling lead times.
Raw metallic as-built; machine before ageing, then polish critical faces. Not corrosion-resistant — protect for wet service. The most popular finish is Machine in the as-built state, then age-harden to reach ~2000 MPa and ~54 HRC. Natural metal finish; machine and polish. Maximum build size is up to 1100 × 625 × 625 mm.
SLM (selective laser melting) fully melts fine metal powder layer by layer to build dense, functional metal parts. You can read more about the SLM process on Wikipedia.
To get the best results with Maraging Steel 18Ni300, send your part as an STL, STEP or 3MF file and tell us the intended use, the tolerances that matter and any cosmetic finish you need. Our team confirms the ideal build orientation, wall thickness and infill, and flags anything that could affect strength, accuracy or surface quality before printing begins.
KAD3D is a Melbourne-based 3D printing service offering Maraging steel 3D printing with free instant online quoting, careful finishing and delivery Australia-wide. Every part is checked before it ships, and our team can advise on the right material and process for your application. 8–10 business days express is available on this material.
Indicative pricing for Maraging Steel 18Ni300 starts around $364.84 AUD for small parts. Every job is quoted exactly on geometry and quantity — instant online quotes are free.
Standard turnaround for Maraging Steel 18Ni300 is 20 business days from order confirmation, with a 8–10 business days express option, delivered Australia-wide.
Printed Maraging Steel 18Ni300 offers a tensile strength around 2000 MPa. The full technical profile, including the figures that matter for your part, is in the table on this page.
The maximum build size for Maraging Steel 18Ni300 is 1100 × 625 × 625 mm. Larger parts can often be printed in sections and joined — ask when you quote.
Yes — Maraging Steel 18Ni300 takes primer and paint well. The most common finishing routes for this material are listed above, and our team can recommend the right one for your part.
Typical layer height or tolerance for Maraging Steel 18Ni300 is ±0.10–0.20 mm or ±0.2% (pre-machining). If a feature needs to be tighter, flag it when you quote and we will confirm what is achievable.
Compare Maraging Steel 18Ni300 with Stainless Steel 316L, Titanium Ti6Al4V, Aluminium AlSi10Mg, or browse the full materials hub.
Ready to start? Upload your file for a free instant quote on Maraging steel 3D printing at KAD3D.
Raw metallic as-built; machine before ageing, then polish critical faces. Not corrosion-resistant — protect for wet service.
Natural metal finish; machine and polish.
Lead times are indicative and start from order confirmation. Actual turnaround varies model by model, depending on part geometry, print time, quantity and shipping location. Express service incurs an additional charge. Express availability is subject to current machine capacity — please confirm when ordering.
Contact us| Price | $364.84 |
| Tensile strength | 2000 MPa |
| Elongation at break | 4 % |
| Hardness | ~54 HRC (aged) |
| Density | 8 g/cm³ |
| Water absorption (24 h) | 0 % |
| Layer / tolerance | ±0.10–0.20 mm or ±0.2% (pre-machining) |
Parts printed in Maraging Steel 18Ni300 in SLM can be finished a number of ways at KAD3D, from a clean functional surface to a fully painted, display-ready result. The treatments below are the ones we most often apply to this material.
Most popular finish: Machine in the as-built state, then age-harden to reach ~2000 MPa and ~54 HRC.
To make material costs easy to compare, KAD3D prints the same standard model — the #3DBenchy — in every material. The price shown is what that identical benchmark part costs in Maraging Steel 18Ni300, so you can weigh materials against each other on a genuine like-for-like basis before uploading your own file.
Benchmark price is a guide for comparison only; your part is quoted on its own size, geometry and finishing. Upload your model for an exact price.
These prices were taken on 1 July 2026 and are still in place.
Printed in-house by KAD3D. Upload your part for an instant quote.
Get instant quote Made in Melbourne · delivered Australia-wide.Material data on these pages was compiled with the assistance of online research tools, in good faith, and may contain inaccuracies. Values are indicative only and intended to give a closer idea of each material's behaviour. For accurate, batch-specific TDS or SDS documentation, please contact KAD3D directly. KAD3D accepts no liability for any reliance on this information.