|Unprocessed PYREX® borosilicate glass comes in unpolished large glass blocks or as rolled glass. It can be sawn, ground, polished and shaped according to customer-specific requirements.|
PYREX® 7740 borosilicate glass is a technical glass composition from Corning with excellent thermal properties. The material is an industry standard since a long time, used for the manufacturing of glass wafers and temperature resistant optics. A low coefficient of expansion which is nearly only one third of what ordinary soda lime glass can offer, allows a good heat shock resistance and facilitates to use of PYREX® glass at a high operating temperature. Glass Wafers made of PYREX 7740 borosilicate glass have been used in semiconductor industry for a long time and were a good solution for anodic bonding processes, because the thermal coefficient of expansion is close to silicon. A high chemical resistance, which is much better than the one of soda lime glass, and an excellent optical transmission over a wide wavelength range, make PYREX® borosilicate glass a versatile option for many special glass and optics applications that are not possible with soda lime glass materials. PYREX® glass can be ground, polished, shaped and coated according to custom specific requirements.
In order to request a quotation for windows, substrates or other optics made of PYREX® borosilicate glass with individual dimensions, please use the button below:
Availability note: The production of PYREX® 7740 brand borosilicate glass has been discontinued by Corning many years ago. There is no remaining stock existing, so based on this glass quotes aren't possible anymore. Nevertheless, we have equivalent, superior quality borosilicate glass materials that feature an almost identical glass composition and nearly identical or better specifications. For high temperature requirements, please take a look on our quartz glass and fused silica page. Please browse our web site and send us your inquiry. We will be pleased to assist you in the selection of the perfect replacement glass material for PYREX® 7740 borosilicate glass that fits your individual application.
Show transmission curve of PYREX®
Further detailed glass specifications on request.
All given details and specifications are mean reference values and are not guaranteed. In addition, please consider our "Notes on technical specifications"