Qaab dhismeedka saddex-geesoodka gaarka ah ee saddex-geesoodka ah ee birta xumbodu waxay ka dhigaysaa in ay leedahay sifooyin aad u fiican oo ka duwan qalabka dhaqanka, sida:

1. porosity sare: porosity-ku wuxuu gaari karaa in ka badan 98% qaab dhismeedka ku dhawaad ​​si buuxda u daalacan, sida walxaha shaandhada, hoos u dhigista cadaadiska yar, heerka socodka sare, xajinta heer sare ah.
2. Bag weyn oo gaar ah: oo leh isla dalool la mid ah, waxay leedahay bedka ugu weyn ee gaarka ah marka la barbar dhigo walxaha kale ee daloolsan, ilaa hal mitir oo laba jibbaaran garaam ama ka badan.
3. porosity sare iyo qaab-dhismeedka dalool lebbisan: porosity waa in ka badan 95%, saddex-cabbir ah qaab-dhismeedka dalool iyo dalool, oo uu leeyahay xoog bir wanaagsan, mugga la mid ah, maaddadu waa ka fudud ee miisaanka, iyo sidoo kale waxa uu leeyahay awoodda ugu sareysa, iyo wuxuu leeyahay nuugista dhawaaqa wanaagsan, nuugista tamarta, sifooyinka korantada ee gaashaanka.
4. waxa uu leeyahay sifooyin bir ah: biraha xumbo waxa laga samayn karaa nikkel, copper, iron, ama alloy, substrates kala duwan ayaa leh sifooyin bir ah oo kala duwan, sida dab-damis, aan sun ahayn, hadhaaga aan soo dhicin, dib loo warshadayn karo, kulaylka, iwm, kala duwan ee codsiyada.
5. waa la alxan karaa, la xiiri karaa, la riixi karaa khafiif ah, duuban iyo farsamooyin kale oo farsamaysan, halka walxaha birta ah dib loo warshadayn karaa, taas oo ku haboon ilaalinta deegaanka iyo kharashka kaydka waqti isku mid ah.