Resources　utilization　of　a　variety　of　industrial　solid　wastes　including　steel　slag　(SS)　and　carbide　slag　(CS)　is　an　effective　measure　that　reduces　environmental　destruction　and　greenhouse　gas　emissions.　In　this　work,　seven　shape-stable　phase　change　materials　(SSPCMs)　with　different　mass　fractions　were　prepared　by　cold　compression-hot　sintering　(CCHS)　method　utilizing　SS　and　CS　as　the　skeleton　material　(SM)　and　NaNO3　as　the　phase　change　material　(PCM).　Research　on　critical　properties　of　SSPCMs　including　thermal　energy　storage　properties,　microscopic　morphology,　mechanical　properties,　chemical　compatibility,　and　economic　properties　was　undertaken.　Results　indicated　that　various　properties　were　optimized　when　the　mass　ratio　of　SS,　CS,　and　NaNO3　was　2.5:2.5:5　(SC4).　The　mechanical　strength　of　sample　SC4　was　131.2　MPa,　and　the　optimum　thermal　energy　storage　(TES)　density　in　the　temperature　range　of　100　°C–400　°C　was　371.1　J/g.　The　maximum　thermal　conductivity　of　sample　SC4　was　1.263　W/(m·K)　after　1307　heating　and　cooling　cycles.　The　sample　SC4　exhibited　favorable　chemical　compatibility　and　the　elements　were　uniformly　distributed　in　the　sample　SC4.　©　2023　Elsevier　Ltd