Zopangira zamkuwa ndi zopangira zamkuwa zonse ndizitsulo zopangidwa ndi mkuwa zomwe zimatha kuponyedwakuponya mchengandi njira zopangira ndalama. Brass ndi aloyi wopangidwa ndi mkuwa ndi zinc. Mkuwa wopangidwa ndi mkuwa ndi nthaka umatchedwa mkuwa wamba. Ngati ndi mitundu yosiyanasiyana ya aloyi wopangidwa ndi zinthu zoposa ziwiri, amatchedwa mkuwa wapadera. Brass ndi aloyi yamkuwa yokhala ndi zinc monga chinthu chachikulu. Pamene nthaka zili kuwonjezeka, mphamvu ndi plasticity aloyi kuchuluka kwambiri, koma mawotchi katundu adzachepa kwambiri pambuyo kuposa 47%, kotero nthaka zili mkuwa ndi zosakwana 47%. Kuphatikiza pa nthaka, mkuwa wonyezimira nthawi zambiri umakhala ndi zinthu monga silicon, manganese, aluminium, ndi lead.
Zomwe Brass ndi Bronze Timaponya
• China Standard: H96, H85, H65, HPb63-3, HPb59-1, QSn6.5-0.1, QSn7-0.2
• USA Standard: C21000, C23000, C27000, C34500, C37710, C86500, C87600, C87400, C87800, C52100, C51100
• European Standard: CuZn5, CuZn15, CuZn35, CuZn36Pb3, CuZn40Pb2, CuSn10P1, CuSn5ZnPb, CuSn5Zn5Pb5
| Aloyi | Kupanga Kwamankhwala (%) | Mapulogalamu | |||
| Mkuwa | Tini | Zinc | Ena | ||
| Gun Metal | 88 | 10 | 2 | / | Ma Bearings, Masamba |
| Bronze | 89 | 11 | / | / | Ma Bearings |
| Phosphor mkuwa | 89.5 | 10 | / | P=0.5 | Bearings, Springs |
| Bell bronze | 75-80 | 20-25 | / | / | Mabelu |
| Admiralty mkuwa | 70 | 1 | 29 | / | Kutentha Kutentha |
| Kuyika zitsulo | 85 | / | 15 | / | Ndalama zachitsulo |
| Naval mkuwa | 60 | 1 | 39 | / | Marine Applications |
| Cartridge yamkuwa | 70 | / | 30 | / | Kujambula mozama |
| Wotchi yamkuwa | 58-60 | / | 38-40 | Pb=1.5-2.5 | Zigawo za wotchi ndi zojambula |
| Aluminium mkuwa | 76 | / | 22 | Al=2 | Marine Applications |
Cast brass ili ndi makina apamwamba kuposa amkuwa, 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 ili ndi kukana kolimba kovala. Nthawi zambiri mkuwa umagwiritsidwa ntchito popanga ma valve, mapaipi amadzi, mapaipi olumikizira amkati ndi kunja kwa mpweya, ndi ma radiator.
Mawonekedwe a Bronze Castings ndi Brass Casting:
• Good fluidity, shrinkage lalikulu, yaing'ono crystallization kutentha osiyanasiyana
• Amakonda kuchepa kwambiri
• Kuponyedwa kwa mkuwa ndi mkuwa kumakhala ndi kukana kovala bwino komanso kukana dzimbiri
• Makhalidwe apangidwe azitsulo zamkuwa ndi zamkuwa ndizofanana ndi kuponyedwa kwachitsulo
