Overview
Schott Glass, produced by SCHOTT AG since 1884, represents a benchmark in specialty glass technology. Originally developed for laboratory and industrial use, its product range now includes borosilicate glass, glass-ceramics, and precision optics. The material is engineered for extreme conditions, combining optical performance with mechanical strength. SCHOTT’s innovations, such as BOROFLOAT® (a floated borosilicate glass), are widely adopted in high-tech industries. The company holds over 15,000 patents globally, underscoring its role as a leader in glass science. Products are manufactured in ISO-certified facilities with strict quality control.
Physical and Chemical Properties
Schott borosilicate glass exhibits a coefficient of thermal expansion (CTE) of ~3.25 × 10⁻⁶/K, making it resistant to thermal shock. Its transmission range spans 185–2,100 nm in UV-Vis-NIR spectra, ideal for optical applications. The material maintains stability in temperatures up to 500°C and demonstrates high chemical resistance to acids (except hydrofluoric acid) and alkalis. Mechanical properties include a Knoop hardness of 480–520 and modulus of rupture of 50–70 MPa. Electrical resistivity exceeds 10¹⁰ Ω·cm at 250°C, suitable for electronic encapsulations. Density varies slightly by composition but typically falls within 2.2–2.5 g/cm³.
Main Applications
In pharmaceuticals, Schott Glass is used for Type I borosilicate vials and ampoules, meeting USP/EP standards for drug stability. The solar industry employs SCHOTT Solar Glass as anti-reflective covers for photovoltaic modules, boosting energy yield by 3–5%. Optical applications include camera lenses (e.g., SCHOTT N-BK7) and augmented reality waveguides. Industrial uses encompass sight glasses for chemical reactors and high-pressure pipelines. Consumer products range from premium cookware (SCHOTT CERAN® cooktops) to smartphone cover glass with enhanced scratch resistance.
Safety and Storage
While non-hazardous per GHS classification, broken glass poses physical risks. Use cut-resistant gloves during handling. Thermal stress fractures can occur if heated/cooled rapidly (>50°C/min); follow manufacturer’s annealing guidelines for processed parts. Store flat glass sheets vertically in A-frame racks with edge protection. Avoid stacking without interleaving material. For long-term storage, maintain relative humidity below 60% to prevent surface leaching. Bulk shipments typically use wooden crates with foam spacers to prevent vibration damage.
B2B Procurement Guide
Key specifications to define include: glass type (e.g., BOROFLOAT 33 for thin-film electronics), dimensions (±0.1 mm tolerance standard), edge work (seamed, ground, or polished), and coatings (AR, conductive ITO). MOQs vary by product; standard sheets start at 1 pallet (~20 m²). Lead times range from 2 weeks for stock items to 8 weeks for custom coatings. Major distributors like Mo-Sci and Corning may carry SCHOTT products, but direct factory purchase ensures full traceability. Request certified test reports for optical/mechanical properties with each batch.