Copper yana da kyakkyawan juriya na lalatawa a cikin busassun muhalli, amma yana da wuyar samar da patina a cikin babban{0}}humi ko sulfur{1}mai ɗauke da muhallin iskar gas, yana haifar da haɓaka juriya. Fuskar aluminum yana da haɗari don samar da fim din oxide mai yawa, wanda zai iya hana ƙarin lalata. Koyaya, juriya na fim ɗin oxide (kimanin 10⁻⁶Ω · cm²) ya fi na jan ƙarfe (10⁻⁶Ω · cm²), kuma yana buƙatar inganta shi ta hanyar plating tin, plating nickel ko maganin iskar shaka.
Dangane da tasirin zafin jiki akan haɓakar wutar lantarki, ƙimar juriya na jan ƙarfe (0.0043 / digiri) yana ƙasa da na aluminum (0.0041 / digiri), amma ƙimar haɓakar haɓakar thermal na aluminum (23.6 × 10⁻⁻ / digiri) shine sau 1.4 na jan karfe (16.5 × 10⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻ A cikin al'amuran da ke da mahimmin sauyin zafin jiki, haɓakar zafi da ƙanƙantar sandunan aluminium sun fi fitowa fili, wanda zai iya haifar da sassautawa a wuraren haɗin. Ana iya rage wannan ta hanyar ƙira (kamar tanadin gibin faɗaɗawa) ko ta amfani da masu haɗawa masu sassauƙa.