S-Glass and High-Strength Glass Fibre Variants
topic
S-glass contains 65 percent silica, 25 percent alumina, and 10 percent magnesia, achieving tensile strength of 4.9 gigapascals and elastic modulus of 87 gigapascals at 40 percent higher cost than E-glass; R-glass and HS4 variants provide intermediate high-strength performance with improved fatigue resistance for aerospace, ballistic armour, and pressure vessel composite reinforcement applications.
Role
Delivers superior specific strength and stiffness performance over E-glass for weight-critical aerospace structural composites, ballistic protection panels, and high-performance marine hulls where the premium material cost is justified by the mechanical performance advantage enabling lighter and more damage-tolerant composite structures.
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