Enye yezinto ezinamandla kakhulu ezisekelwe ethusi ezitholakala emakethe namuhla i-beryllium yethusi, eyaziwa nangokuthi i-spring copper noma i-beryllium bronze. Amabanga okuhweba e-beryllium yethusi aqukethe i-beryllium engu-0.4 kuya ku-2.0%. Isilinganiso esincane se-beryllium nethusi sakha umndeni wama-alloys ethusi aphezulu anamandla aphakeme njengensimbi ye-alloy. Eyokuqala kwemindeni emibili, i-C17200 ne-C17300, ihlanganisa amandla aphezulu nge-conductivity elinganiselayo, kanti umndeni wesibili, i-C17500 ne-C17510, inikeza ukuqhutshwa okuphezulu ngamandla alinganiselwe. Izici eziyinhloko zalawa ma-alloys ukusabela kwawo okuhle kakhulu ekwelashweni okuqinisa imvula, ukuqhutshwa kwe-thermal okuhle kakhulu, kanye nokumelana nokuphumula kwengcindezi.