Basalt fiber

Fiber melt-spun from volcanic rock; between E-glass and S-glass in properties, good thermal resistance.

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PropertyValueSourceMethodConditionsNote
Density2.67 g/cm³Fiore et al., Composites Part B 74 (2015) — basalt fibre review23 °C, dry
Young's modulus E89 GPaFiore et al., Composites Part B 74 (2015) — basalt fibre review23 °C, dryliterature range ~85–110 GPa
Tensile strength2900 MPaFiore et al., Composites Part B 74 (2015) — basalt fibre review23 °C, drywide scatter across producers
  • Fiore et al., Composites Part B 74 (2015) — basalt fibre review

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.