Borosilicate galasindi mtundu wa zinthu zamagalasi zomwe zili ndi boron yapamwamba, yoyimiridwa ndi zinthu zosiyanasiyana zochokera kwa opanga osiyanasiyana.Pakati pawo, Schott Glass's Borofloat33® ndi galasi lodziwika bwino la silika, lomwe lili ndi pafupifupi 80% silicon dioxide ndi 13% boron oxide.Kupatula Schott's Borofloat33®, pali zinthu zina zamagalasi zomwe zili ndi boron pamsika, monga Corning's Pyrex (7740), mndandanda wa Eagle, Duran®, AF32, ndi zina.
Kutengera ma oxides osiyanasiyana achitsulo,galasi la silika lapamwamba kwambiriakhoza kugawidwa m'magulu awiri: alkali-containing high-borate silica (mwachitsanzo, Pyrex, Borofloat33®, Supremax®, Duran®) ndi silika wopanda alkali high-borate (kuphatikizapo Eagle series, AF32).Malingana ndi ma coefficients osiyanasiyana a kukula kwa matenthedwe, galasi la silika lokhala ndi alkali lalitali likhoza kugawidwa m'magulu atatu: 2.6, 3.3, ndi 4.0.Pakati pawo, galasi lokhala ndi mphamvu yowonjezera kutentha kwa 2.6 imakhala ndi coefficient yotsika komanso kukana kutentha kwabwino, zomwe zimapangitsa kuti zikhale zoyenera m'malo mwa pang'ono.galasi la borosilicate.Kumbali ina, galasi lokhala ndi mphamvu yowonjezera kutentha kwa 4.0 limagwiritsidwa ntchito kwambiri polimbana ndi moto ndipo lili ndi zinthu zabwino zosagwira moto pambuyo polimba.Mtundu wogwiritsidwa ntchito kwambiri ndi womwe uli ndi coefficient yowonjezera kutentha kwa 3.3.
| Parameter | 3.3 Galasi la Borosilicate | Soda Laimu Galasi |
| Zinthu za silicon | 80% kapena kuposa | 70% |
| Strain Point | 520 ℃ | 280 ℃ |
| Annealing Point | 560 ℃ | 500 ℃ |
| Kufewetsa Point | 820 ℃ | 580 ℃ |
| Refractive Index | 1.47 | 1.5 |
| Kuwonekera (2mm) | 92% | 90% |
| Elastic Modulus | 76 KNmm^-2 | 72 KNmm^-2 |
| Stress-Optical Coefficient | 2.99*10^-7 cm^2/kgf | 2.44*10^-7 cm^2/kgf |
| Kutentha Kwambiri (104dpas) | 1220 ℃ | 680 ℃ |
| Linear Expansion Coefficient (20-300 ℃) | (3.3-3.5) × 10^-6 K^-1 | (7.6～9.0) × 10^-6 K^-1 |
| Kachulukidwe (20 ℃) | 2.23 g•cm^-3 | 2.51 g•cm^-3 |
| Thermal Conductivity | 1.256 W/(m•K) | 0.963 W/(m•K) |
| Kukaniza kwa Madzi (ISO 719) | Gulu 1 | Gulu 2 |
| Kukaniza kwa Acid (ISO 195) | Gulu 1 | Gulu 2 |
| Kukaniza kwa Alkali (ISO 695) | Gulu 2 | Gulu 2 |
Mwachidule, poyerekeza ndi galasi la soda,boroslicate galasiali bwino matenthedwe bata, mankhwala bata, kuwala transmittance, ndi mphamvu zamagetsi.Zotsatira zake, ili ndi zabwino monga kukana kukokoloka kwa mankhwala, kugwedezeka kwamafuta, magwiridwe antchito abwino kwambiri, kutentha kwambiri, komanso kuuma kwakukulu.Choncho, amadziwikanso kutigalasi yosagwira kutentha, galasi losagwira kutentha, galasi losatentha kwambiri, ndipo nthawi zambiri amagwiritsidwa ntchito ngati galasi lapadera lopanda moto.Amagwiritsidwa ntchito kwambiri m'mafakitale monga mphamvu yadzuwa, mankhwala, zopaka zamankhwala, optoelectronics, ndi zaluso zokongoletsa.