Authors:
Linus Lidman (1), Ralf Carlström (1), Joakim Lundh (1)
1-Höganäs AB, Sweden
Abstract:
17-4PH is the most used alloy in the metal injection molding (MIM) industry due to its high strength and hardness combined with modest corrosion resistance. Particle size distribution (PSD) of the powder used in a feedstock is key in how the end product will perform mechanically, feedstock processability and the appearance of the final components produced. Therefore, choosing a relevant powder fraction for a certain application becomes vital. This work focused on a special water atomized powder lot of the alloy 17-4PH sieved in different size fractions. A catalytic feedstock with identical powder loading was used for all grades. Properties evaluated were Sintered Density (SD), Melt Flow Index (MFI) and surface roughness. A simple way to boost the ductility and the repeatability in static properties of hydrogen sintered 17-4PH was successfully implemented.
DOI:
https://doi.org/10.59499/EP235765406