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| Thermal
& Optical Properties |
| Glass
Fiber is an inorganic fiber
completely incombustible. |
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| Coefficient
of Linear-Thermal
Expansion |
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4.8x10-6cm/cm/°C |
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| Specific
Heat |
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0.19 cal/g°C |
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| Heat
Conductivity
(Bulk Glass) |
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0.86Kcal/m.h°C |
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| Softening
Temperature
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850°C |
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| Index
of Refraction
at 25°C
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1.55 |
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| Mechanical
Properties
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| Glass
Fiber has a high tensile
strength in relation to
weight and dimensional stability.
It does not stretch nor
shrink |
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| Tensile
Strength |
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350 kgf/mm2(Mpa) |
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| Elastic
Modulus |
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7,300 kg/mm2 |
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| Elongation
at 25°C |
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4.8% |
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| Electrical
Insulation Properties |
| Glass
Fiber has excellent electrical
insulation properties. |
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| Dielectric
Constant(ε)
at 25°C |
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102Hz-6.43
104Hz-6.32
1010Hz-6.11 |
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| Loss
Tangent(tgδ)
at 25°C |
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102Hz-0.0042
1010Hz-0.006
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| Volume
Resistance |
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1010Ω
cm |
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| Corrosion |
Glass
Fiber does not absorb water,
rot, mildew, deteriorate
or decay. |
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| Cost |
Glass
Fiber is excellent in Reinforcing
Plastics, which offers
strength to the product
at competitively low cost.
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| Gravity
& Density |
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| Specific
Gravity |
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2.53~2.60 |
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| Density |
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2.53~2.60 g/cm3 |
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