Hydrogen production by ammonia cracking is a sustainable method of industrial energy conversion. The high process temperatures place high demands on the various material systems. Metallic materials must be resistant to creep and hydrogen embrittlement over a long service life. Suitable materials include alloyed steels (e.g. AISI 316 Ti and Crofer 22 H) and Ni-based alloys (e.g. Alloy 625). Ceramic materials are used to coat the metallic structure. These act as carriers for active catalysts for the cracking of the ammonia and must therefore achieve a sufficient bond to the metallic component. The focused ceramics can be classified into the groups of SiO2 and Al2O3 powder materials. This article discusses the suitability of different material systems in the operational scope of additive manufacturing under the prevailing technical challenges. Emphasis is placed on evaluating the resistance to hydrogen embrittlement and ensuring the adhesive strength between the metallic and ceramic bond.