storage - stable metal - fueled pyrotechnics and methods for manufacturing such compositions are provided . these are manufactured by granulating a mixture of liquid cyclohexane , powdered metal fuel , optional teflon ® powder , and at least one ethylene and vinyl acetate co - polymer , together to form a storage stable powdered metal fuel effectively coated with ethylene and vinyl acetate co - polymer . this provides pyrotechnics with superior resistance to degradation induced by atmospheric moisture , and having other improved properties . the powdered metal fuel includes , for example , powdered magnesium .