The performance properties (mechanical, electrical, chemical, and optical) of a glass fiber product can be influenced through three main factors: glass composition, sizing, and product form. AGY maintains an active R&D and Innovation effort focused on advancing the technology in all three of these factors of differentiation.

Glass Composition
The recipe of oxide components comprising the glass composition has the greatest influence on the fundamental properties of the glass fiber. AGY has a staff of glass scientists and laboratory facilities to explore and develop new glass compositions with performance tailored to specific customer needs. In addition to our longstanding E-glass and S-2 Glass® high strength products, AGY has recently introduced several new glass compositions: L-Glass® and S-3 HDI® fibers for high performance electronics; and S-1 HM® and S-3 UHM fibers for high modulus industrial applications.

All glass fibers are coated with a chemical sizing that facilitates customer processing, and in many cases provides a direct compatibility to the resin system being used in the composite system. AGY has a staff of sizing chemists and laboratory facilities to develop tailored sizing systems for specific resin systems and customer processes. Recent developments include a range of sizings for thermoplastic systems, and direct sizes for higher performance woven fabric systems.

Product Form
Glass fiber products take many forms, determined by the number and diameter of the filaments in the fiber bundle, whether the fibers have been twisted (“yarn”), pulled together in parallel (“roving”), or cut into discrete lengths (“chop”). AGY has a staff of engineers dedicated to developing the technology to fiberize, gather, and further process glass fibers into many different product forms. Recent developments include chopped S-2 Glass® fibers for thermoplastic injection molding and ultrafine (4 micron) fiber products for high performance electronics.