According to Owens Corning, numerous bare-glass corrosion studies have compared various glass compositions, but do not necessarily reflect composite corrosion performance. ASTM C581 composite corrosion performance testing shows composite performance in a 'no-stress' testing methodology, and thus is really a resin test rather than a test of a composite system under load.
The focus of this study from Owens Corning is to show the mechanism by which corrosion occurs over time in stressed laminates using SEM (scanning electron microscopy) and EDX (energy dispersive X-ray) spectrometry.
The outcome of the study provides a compelling reason for using boron-free Advantex® E-CR glass fibre reinforcements throughout the entire composite structure.