Osprey® MAR-50 Co-free maraging steel

Osprey® MAR-50 Co-free is a maraging steel free of cobalt, with reduced amount of nickel and an addition of chromium, to obtain a nearly fully martensitic microstructure already in the Laser - Powder Bed Fusion (L-PBF) as-built condition.

This alloy has been developed using the latest metallurgical modelling systems. It can be directly aged to achieve levels of material performances including strength, hardness and toughness comparable to the conventional 18Ni300 maraging steel.

Osprey® MAR-50 Co-free is typically used for conformal-cooled mould tooling and rubber-tyre mould (sipes) applications.

Chemical composition (nominal), %
Fe C Cr Ni Mo Co Ti Al Mn Si P S
Bal. ≤0.06 4.0 9.5 4.5 <0.1 <1.0 <0.3 ≤0.5 ≤0.5 ≤0.03 ≤0.03

Disclaimer: Data and recommendations are provided for information and guidance only, and the performance or suitability of the material for specific applications are not warranted or guaranteed. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Sandvik materials.