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Silica - Fused Silica (Silicon Dioxide)

Material: Silica - Fused Silica (Silicon Dioxide)
Composition: 99.9% SiO2/.1% H2O
Property Minimum Value (S.I.) Maximum Value (S.I.) Units (S.I.) Minimum Value (Imp.) Maximum Value (Imp.) Units (Imp.)
Atomic Volume (average) 0.009 0.0095 m3/kmol 549.213 579.725 in3/kmol
Density 2.17 2.22 Mg/m3 135.469 138.59 lb/ft3
Energy Content 20 25 MJ/kg 2166.77 2708.47 kcal/lb
Bulk Modulus 34.3 36.1 GPa 4.97479 5.23586 106 psi
Compressive Strength 1522 1678 MPa 220.747 243.373 ksi
Ductility 0 0 0 0 NULL
Elastic Limit 152.2 167.8 MPa 22.0747 24.3373 ksi
Endurance Limit 144.2 159.4 MPa 20.9144 23.119 ksi
Fracture Toughness 0.65 0.67 MPa.m1/2 0.59153 0.609731 ksi.in1/2
Hardness 4571 5040 MPa 662.968 730.991 ksi
Loss Coefficient 8e-006 2e-005 8e-006 2e-005 NULL
Modulus of Rupture 197.9 218.2 MPa 28.703 31.6472 ksi
Poisson's Ratio 0.15 0.16 0.15 0.16 NULL
Shear Modulus 30.8 32.3 GPa 4.46716 4.68472 106 psi
Tensile Strength 152.2 167.8 MPa 22.0747 24.3373 ksi
Young's Modulus 71.2 74.8 GPa 10.3267 10.8488 106 psi
Glass Temperature 1233 1492 K 1759.73 2225.93 °F
Latent Heat of Fusion kJ/kg BTU/lb
Maximum Service Temperature 1173 1373 K 1651.73 2011.73 °F
Melting Point K °F
Minimum Service Temperature 0 K -459.67 °F
Specific Heat 700 750 J/kg.K 0.541701 0.580394 BTU/lb.F
Thermal Conductivity 1 1.5 W/m.K 1.87203 2.80805 BTU.ft/h.ft2.F
Thermal Expansion 0.54 0.57 10-6/K 0.972 1.026 10-6/°F
Breakdown Potential 12 14 MV/m 304.8 355.6 V/mil
Dielectric Constant 3.6 3.9 3.6 3.9 NULL
Resistivity 1e+023 1e+025 10-8 ohm.m 1e+023 1e+025 10-8 ohm.m
Environmental Properties
Resistance Factors
1=Poor 5=Excellent
Flammability 5
Fresh Water 5
Organic Solvents 5
Oxidation at 500C 5
Sea Water 5
Strong Acid 5
Strong Alkalis 4
UV 5
Wear 4
Weak Acid 5
Weak Alkalis 5