As a basic material, basalt is a black, alkaline extrusive rock.
With only 5 % higher density than the conventional E glass fibre, basalt fibre offers in comparison with it a
15 % higher tensile strength, higher compressive strength and rigidity (modulus of elasticity). The thermal stability
is extremely high, the fibres themselves only begin to melt at 1450 °C. Thechemical endurance,
especially against strong acids, lyes and solvents, is very good.
Comparision of the technical data of Basalt fibre and (E-glass fibre):
Density (g/cm³): 2,75 (2,60)
Tensile strength (MPa): 4840 (3450)
Compressive strength (MPa): 3792 (3033)
Modulus of elasticity (MPa): 89000 (77000)
Elongation at break (%): 3,15 (4,70)
Order no. 205 130-X
Applications, which, with regard to rigidity and strength, fall between E glass
and HT carbon fibre, e.g. spars, force transfer points, wound components, profiles
etc. in automotive engineering, the construction of sports equipment, model making,
aviation industry and production of receptacles. Suitable for epoxy, vinyl ester
and polyester resins.