A manufacturing process derived from paper technology can be used to produce a flat porous metallic material. To this end, organic fibers, fillers and additives are mixed with metal powder and the pulp is subsequently processed on a paper making machine (Fig. 1). The so-called green paper is then subjected to a heat treatment where the organic components are removed. After that, the remaining sheets are sintered at temperatures close to the melting point of the metal powder, resulting in a purely metallic porous material, the so-called sinter paper. This approach has been used for the development of different porous materials such as nickel, copper and stainless steel 316L. Using a lab scale paper making machine, coiled green paper with a length of 10 m and a width of 0.4 m has been produced. After the heat treatment, the thickness of the purely metallic porous sheets ranges typically from 200 to several hundred microns with porosities anywhere between 40 and 60 %. The pore sizes are typically in the range of several µm up to approximately 25 µm, depending on the manufacturing parameters. This contribution gives examples of different material types including some morphological data. The morphological characterization was carried out based on high-resolution µCT scans which were analyzed via the software package GeoDict (Fig. 2). Measured and calculated values of the electrical conductivity have been compared and the permeability was calculated from the µCT data. While current work focuses on applications in hydrogen technology, the newly developed material seems also to be well suited for filtration purposes and membrane support applications i. e. in CO₂ capture and utilization.