Below is a list of various facts, resources and links to third party sources that may be useful for your glass manufacturing projects. We are also pleased to answer any questions you may have, or direct you to additional useful information. Please feel free to contact us to speak to a glass manufacturing professional, or to make an appointment to stop by for a site tour or personal consultation.

Glass Properties for Various Glass Compositions
Glass Properties Borosilicate Clear Fused Quartz
Thermal Expansion Coefficient
(10-7 cm/cm/C°
32.5 5.5
Temperature Strain Point 510 1120
Temperature Softening (°C) 821 1,683
Refractive Index (589.3 mm) 1,474 1,459
Hardness (KNH100) 418 605