S-2 glass fiber

High-strength glass fiber; ~40% stronger and stiffer than E-glass — ballistic panels, pressure vessels, aerospace.

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PropertyValueSourceMethodConditionsNote
Density2.46 g/cm³AGY S-2 Glass product datasheet23 °C, dry
Young's modulus E86.9 GPaAGY S-2 Glass product datasheet23 °C, dryisotropic
Tensile strength4890 MPaAGY S-2 Glass product datasheet23 °C, dryvirgin filament; in-composite strength lower
  • AGY S-2 Glass product datasheet

Typical room-temperature values for learning and preliminary design; grades vary. Always confirm against the supplier datasheet before design work. Data policy: docs/DATA-SOURCES.md in the repository.