S2-Glass is manufactured by AGY in the USA. The fiber has been designed to increase compressive strength, tensile strength, impact resistance and temperature resistances.
This site focuses on S2-Glass and it compares it with close alternatives.
Click below links for general information
AGY_Technical_Product_Guide-Revised
Advanced_Materials_Brochure-Technical
SynergisticRolesofHighStrengthGlass-Technical
Mechanical_Properties_of_Polymeric_Composites-Technical
High_Strength_Glass_Fibers-Technical