@spot_material
hello@spotmaterial.com
High modulus glass fibre
5-10 usd/kg
Circularity potential
Low
Strength
Extreme
Production energy
Medium
Stiffness
High
Embodied CO2
Medium
Density
High
High modulus glass fibre, used in the production of high strength laminated composites, is produced from aluminosilicate glass. It provides superior properties compared to borosilicate E-glass. Used in demanding applications, such as wind turbine blades, aerospace and military, these fibres are also known as boron-free, to distinguish them from E-glass.
Sustainability concerns
Non-renewable ingredients
Raw material generates polluting by-products
Low circularity potential
R-glass is a reinforcement fibre made with calcium aluminosilicate. It has good mechanical properties and is used in application that demand high acid corrosion resistance. It is typically only sized for use with thermosetting resin systems and so limited to pultrusion, filament winding, laminating and resin infusion. It is used in the production of wind turbine blades, for example.
Design properties
Cost
usd/kg
5-10
Embodied energy
MJ/kg
25-35
Carbon footprint
kgCO2e/kg
2-2.5
Density
kg/m3
2520-2580
Tensile modulus
GPa
86-89
Tensile strength
MPa
2700-4500
Hardness
Mohs
7
Poissons ratio
0.21-0.24
Thermal expansion
(µm/m)/ºC
4.2-8.8
Melt temperature
ºC
1400
Thermal conductivity
W/mK
0.95
Temperature
min-max °C
-40 to 500
Thermal
insulator
Electrical
insulator
