Ihe nke ọla kọpa ebu tubes kwesịrị ịbụ ndị nwere ezigbo ike ike, ike ike ọgwụgwụ, ike siri ike kwesịrị ekwesị, elongation dị ala na ọnụọgụ conductivity dị elu.N'ihi ya, ihe dị ka phosphorous deoxidize ọla kọpa (DHP), CUAG, CR-ZR-CU na-anabata nke ọma site na ndị ọrụ nke mba niile.Mkpuchi: Ọla kọpa nwere ike ike dị ala nke na-eduga n'ihe na-egbochi ihe mgbochi.Ya mere, ebe dị n'akụkụ ala nke ihe ọkpụkpụ, ebe nrụgide na-abawanye nke ukwuu n'ihi shells, ga-eyi nke ukwuu.Iji mee ka ndụ oge nke ihe ọkpụkpụ ọla kọpa dịkwuo elu, a chọrọ akwa akwa ime akwa na akwa siri ike kwesịrị ekwesị.Ọtụtụ n'ime tubes ọla kọpa maka obere ihe nkedo billet anaghị eji na sistemu nkedo ọ bụla ebe enwere nkwado iyi nkedo siri ike, ya mere ha na-enwe mmetụta nke ukwuu ka a na-eyi.Anyị na-eji plating siri ike chrome na-abawanye ndụ nke tubes ebu.A ga-achịkwa ọkpụrụkpụ nke plasta na nso kacha mma.Banyere mkpuchi nke efere ọla kọpa, dabere na ahụmịhe afọ anyị, anyị nwere ike ịnye mkpuchi mkpuchi Cr, mkpuchi Ni-Cr, mkpuchi Ni-Fe iji gboo mkpa nke ndị ahịa dị iche iche ma n'ụlọ na mba ọzọ.