He thermoplastic nā metala a hiki ke paʻi ʻia ke hoʻomehana ʻia (pono nā metala ʻokoʻa i nā mahana like ʻole). ʻo kēiakapa ʻia ka malleability.
ʻO Malleability ka hiki o kahi mea metala ke hoʻololi i ke ʻano me ka haki ʻole i ka wā e hana ana. Loaʻa iā ia ka hiki ke hana i ka hammer forging, rolling, stretching, extrusion, etc. ma nā mokuʻāina wela a anu. ʻO ka malleability ka mea nui e pili ana i ka hui kemika o ka mea metala.

1. He aha ka hopena o ka titanium i nā waiwai a me ka malleability okila?
Hoʻomaʻemaʻe ka Titanium i ka palaoa o ke kila. E ho'ēmi i ka wela wela o ke kila. ʻAʻole pono ka nui o ka titanium i ke kila, ke ʻoi aku ka nui o ke kalapona ma mua o 4 mau manawa, hiki iā ia ke hoʻemi i ka plasticity kiʻekiʻe o ke kila, ʻaʻole maikaʻi no ka forging.
Loaʻa i ka Titanium ke kūpaʻa ʻino maikaʻi, hoʻohui i ka titanium ikila kohu ʻole(hoʻohui ʻia i ke kila AISI321) hiki ke hoʻopau a hōʻemi paha i ka hanana corrosion intercrystalline.

2. He aha ka hopena o ka vanadium i nā waiwai a me ka malleability o ke kila? Hoʻonui ka Vanadium i ka ikaika, ka paʻakikī a me ka paʻakikī o ke kila.
He mana koʻikoʻi ka Vanadium e hana i nā carbide a me ka hopena ikaika i ka hoʻomaʻemaʻe palaoa. Hiki i ka Vanadium ke hoʻohaʻahaʻa loa i ka naʻau o ke kila, hoʻonui i ka plasticity kiʻekiʻe o ke kila, a pēlā e hoʻomaikaʻi ai i ka malleability o ke kila.
Ua kaupalena ʻia ka Vanadium i ka hao solubility, ʻoi aku ka nui ma mua o ka loaʻa ʻana o ke ʻano kristal coarse, i hiki ai i ka hihia o ka hāʻule ʻana o ka plastic, ua hoʻonui ʻia ke kūpaʻa deformation.

3. He aha ka hopena o ka sulfur i nā waiwai a me ka malleability okila?
He mea ʻino ka Sulfur i ke kila, a ʻo ka pōʻino nui ʻo ka brittleness wela okila. ʻO ka solubility o ka sulfur i loko o ka hopena paʻa heʻuʻuku loa ia, a hui pū me nā mea'ē aʻe e hana i nā mea e like me FeS, MnS, NiS, etc. ʻO FeS ka meaʻino loa, a hanaʻo FeS i nā cokuns me Fe a iʻole FeO, e hoʻoheheʻeʻia ma 910 ~ 985C a puunaue i ka palena o ka palaoa i loko o kahi pūnaewele, e hōʻemi nui ana i ka plasticity o ke kila a hoʻoulu i ka wela.
Hoʻopau ka manganese i ka brittleness wela. Ma muli o ka pilina nui o ka manganese a me ka sulfur, ʻo ka sulfur i loko o ke kila he MnS me kahi helu heheʻe kiʻekiʻe ma kahi o FeS.

4. He aha ka hopena o ka phosphorus i nā waiwai a me ka malleability okila?
ʻO ka Phosphorus kekahi mea ʻino i ke kila. ʻOiai inā he mau tausani wale nō ka nui o ka phosphorus i loko o ke kila, e hoʻonui ʻia ka brittleness o ke kila ma muli o ka ua o ka brittle compound FegP, ʻoi aku hoʻi i ka haʻahaʻa haʻahaʻa, e hopena i ka "brittle anu". No laila e kaupalena i ka nui o ka phosphorus.
Hoʻemi ka Phosphorus i ka weldability okila, a ua maʻalahi ka hana ʻana i nā māwae welding ke hala ka palena. Hiki i ka Phosphorus ke hoʻomaikaʻi i ka hana ʻoki, no laila hiki ke hoʻonui ʻia ka ʻike o ka phosphorus i ke kila ma mua o ka ʻoki maʻalahi.