ʻO ka mea metala me ka mea keleawe kiʻekiʻe loa i kapa ʻia he keleawe maʻemaʻe. Ua ʻike nui ʻia ʻo iaʻulaʻula keleawe no kona ili puka maiʻulaʻula-ʻulaʻula. Loaʻa i ke keleawe ke kūlana kiʻekiʻe o ka maʻalahi a me ka ductility.
ʻO ke keleawe he huila keleawe a me ka zinc, i kapa ʻia he keleawe ma muli o kona kala melemele gula. ʻO ka zinc i loko o ke keleawe ka mea i ʻoi aku ka paʻakikī a ʻoi aku ke kūpaʻa i ka abrasion, ʻoiai ʻo ka mea i loaʻa ka ikaika tensile maikaʻi.
ʻO Bronze kahi mea hao i hana ʻia ma ka hoʻoheheʻe ʻana i ke keleawe me kekahi mau metala makamae ʻē aʻe. ʻO nā hui like ʻole o nā mea hoʻohui i loaʻa nā ʻano kino like ʻole anā noi.
ʻO ka Beryllium Copper Foil kekahi ʻano o ka supersaturated solid solution copper alloy i hui pū me ka mechanical, physical, kemikala waiwai a me ka corrosion resistance.
ʻO ke keleawe-nickel alloy mea maʻamau i kapa ʻia he keleawe keʻokeʻo ma muli o kona ʻili keʻokeʻo kālā.keleawe-nickel huikauhe mea hao hao me ka resistivity kiʻekiʻe a hoʻohana mau ʻia ma ke ʻano he mea impedance. He haʻahaʻa haʻahaʻa resistivity mahana coefficient a me ka waena resistivity (resistivity o 0.48μΩ·m).