Papa kēpau, he pā i hana ʻia me ke kēpau i ʻōwili ʻia. ʻO ka umekaumaha kikoʻī he 11.345g/cm3. Loaʻa iā ia ke kūpaʻa corrosion ikaika, ka waikawa a me ka pale alkali. ʻO ia kekahi ʻano mea ʻoi aku ka maikaʻi o ka pale ʻana i ka radiation i loko o ke kūkulu ʻana i ka waika-kūpaʻa i ke kaiapuni, ka pale ʻana i ka lāʻau lapaʻau, X-ray, ka pale ʻana o ka lumi lumi CT, ke kaumaha, ke kani ʻana a me nā ʻano ʻē aʻe he nui.
I kēia manawa, ʻo ka mānoanoa o ka home maʻamau 0.5-500 mm, hoʻohana maʻamau i nā kikoʻī no 1000 * 2000 MM, hiki i ka mīkini home maikaʻi ke hana i ka 2000MM ākea loa, ʻo ka 30000 MM lōʻihi loa, ka hapa nui o ka hoʻohana ʻana i ka 1 # electrolytic alakaʻi i ka hana, kekahi o ia. hana ʻia mai ke kēpau i hana hou ʻia. ʻOi aku ka maikaʻi o ka maikaʻi, a ʻokoʻa iki ke kumukūʻai.
Hoʻohana nui ʻia ia no ka hana ʻana i nā pākaukau lead-acid, me ka hoʻohana ʻanapepa alakaia me nā paipu ma ke ʻano he mea pale pale i loko o nā ʻoihana hana waika a me nā metallurgical, a me ka hoʻohana ʻana i ke alakaʻi ma ke ʻano he kaula kaula a fuse i ka ʻoihana uila. Hoʻohana ʻia nā ʻāpana kēpau i loaʻa i ka tin a me ka antimony no ka paʻi ʻana i ke ʻano movable, Lead-Tin Alloys no ka hana ʻana i nā electrodes fusible lead, nā pepa alakaʻi a me nā ʻāpana kila i uhi ʻia no ka ʻoihana kūkulu. He maikaʻi ko ke alakaʻi i ka X-ray a me ka gamma-ray a hoʻohana nui ʻia ma ke ʻano he mea pale no nā mīkini X-ray a me nā mea mana atomic.
