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Table 5 The specifications of glass fiber

From: R&D on glass fiber reinforced epoxy resin composites for superconducting Tokamak

Specification Virgin fiber tensile strength (MPa) Modulus of elasticity (GPa) Density (g/cm3) Elongation (%) Impregnated strand tensile strength (MPa) Softening point temperature (°C)
E-Glass 3140 73 2.54 4.8 1860 850
R-Glass 3000–3400 80–83 2.65 895