Kulimba kwa mkuwa ndikokulirapo kuposa ma Aluminiyamu aloyi koma kucheperako kuposa chitsulo chopangidwa ndi chitsulo chosungunuka. Chifukwa chake ndikosavuta kumamatira zida zodulira panthawi yopanga makina. Kawirikawiri mkulu kuuma aloyi zitsulo angagwiritsidwe ntchito ngati zipangizo kudula zida Machining mkuwa. Kuponyera mkuwa kumakhala ndi makina apamwamba kuposa bronze, koma mtengo wake ndi wotsika kuposa bronze. Cast brass nthawi zambiri imagwiritsidwa ntchito ponyamula tchire, tchire, magiya ndi zida zina zolimbana ndi dzimbiri ndi ma valve ndi zina zolimbana ndi dzimbiri. Brass ali ndi mphamvu yolimbana ndi kuvala. Nthawi zambiri mkuwa umagwiritsidwa ntchito popanga ma valve, mapaipi amadzi, mapaipi olumikizira amkati ndi kunja kwa mpweya, ndi ma radiator.