Mechanical properties of fused quartz and silica are similar to other glasses. High tensile strenght and high compressive strenght is typical. Note that many properties are temperature dependent and tensile strenght is greatly effected by surface flaws.
Some of the major characteristics are:
Density: 2.203 g/cm3
Hardness: 5.3–6.5 (Mohs
scale) , 8.8 GPa
Tensile strenght: 48.3 MPa
Compressive strenght: >1.1 GPa
Bulk modulus: ~37 GPa
Rigidity modulus: 31 GPa
Young's modulus: 71.7 GPa
Poisson's ratio: 0.17
Lame elastic constant: λ=15.872 GPa, μ=31.261 GPa
