Fireplace glass Features: Our flat borosilicate 3.3 float glass sheet is equivalent with schott's borofloat series. Mechanical performance Density 2.23+/-0.02g/cm3 Thermodynamic performance Thermal expansion coefficient (0-300) 3.3+/-0.1x10-6k-1 Softening point 820+/-10 Strain point 516+/-10 Caloricity (20-100) 0.82kj x (kgxk)-1 Thermal coefficient 1.2wxmxk-1 Thermal shock resistance 180k Strengthening type 300k Identical temperature difference 100k Strengthening type 300 k Maximum working temperature short time(10h): 450 Chemical performance Water resistance iso719/din12111 hgb1/iso720 hga1 Acid resistance iso1776/din12116 1 Alkali resistance iso695/din52322 a2 Optical property Refractive index nd: 1.47384 Transmittance spectrum curve Electrical property Specific resistance lg 8.0+xcm at 250 Dielectric dissipation fraction tan = (1 megacycle at 20): 38x10-4 Dielectric constant s=4.7 Available thickness (mm): 1.50+/-0.20 4.00 +/-0.15 2.00+/-0.20 5.00+/-0.15 2.25+/-0.20 5.50+/-0.15 2.75+/-0.20 6.00 +/-0.15 3.0+/-0.20 6.50+/-0.20 3.30+/-0.20 7.50+/-0.30 3.80+/-0.15 8.00+/-0.30 We also do the follows to customers' requirements: Cutting Round corner Round edge Surface fine polishing Hole drilling Coating Surface printing and sand blasting Thermal bending Wooden crate package