 This paper presents a novel composite material consisting of Pettit-PSS coating on top of melamine foam. The material has excellent mechanical properties, thermal insulation, and improved thermal infrared stealth performance. It also demonstrates superior radar stealth performance, with a minimum reflection loss of minus 57.57 dB, an optimum ultra-wideband of 10.52 GHz, and a simulation of radar cross-section reduction of 17.68 dBm2. Additionally, it exhibits an average electromagnetic interference shielding effectiveness of 30.80 dB. This study provides an approach for the design of high-performance stealth materials with infrared radar compatibility. This article was authored by Wei Huagu, Samuel Jun Hong-ong, Yu Hong-shen, and others.