ʻO ka ikaika tensile o nā koʻokoʻo keleawe ma waena o 300 a me 500MPa (ma muli o ka zinc content), ʻoi aku ka kiʻekiʻe ma mua o ke keleawe maʻemaʻe ma 200 a 300 mpa, ʻoiai e mālama ana i ka plasticity maikaʻi (elongation 15% a 40%). ʻO kēia hiʻohiʻona o ka "hoʻohui ʻana i ka ikaika a me ka plasticity" hiki iā ia ke kū i nā ukana ikaika (e like me ka vibration a me ka hopena), a e hoʻokō pū i ke ʻano paʻakikī i hana ʻia ma o ka hana anuanu (stamping, bending) a i ʻole ka hana wela (extrusion, casting). No ka laʻana, hoʻohana nui ʻia ka keleawe H62 me 30% zinc (62% copper a me 38% zinc) i nā ʻāpana kaʻa. Loaʻa iā ia ka ikaika tensile o 370MPa a me ka elongation o 25%, ke kaulike maikaʻi i ka ikaika a me ke kaʻina hana.
