Clear Float Solar Glass
Clear Float Solar Glass Thickness: 2.8mm, 3.2mm, 4.0mmApplications：Cover glass for solar thermal collector Glass backsheet for glass-glass photovoltaic modules Greenhouse roof and wallGLASS DESCRIPTION●MIGO Clear Float Solar Glass is produced by processing high quality clear float glass in continuous tempering furnace. After tempering treatment, it is 4-5 times stronger than ordinary annealed float glass and, if broken, disintegrates into small fragments with dulled edges that are unlikely to cause serious injury. ●Light transmittance is a bit lower than ultra clear low iron glass, but cost is also lower. It is suitable for area having sufficient sun light.MAIN CHARACTERISTICSLight Transmittance3.2mm (1/8"): 90.17%; 4.0mm ( 5/32"): 89.82%Solar Transmittance 3.2mm (1/8"): 84.67%; 4.0mm ( 5/32"): 83.04%Certification EN12150, EN12600, CCC, SGS, SPFSpecific weight (kg/m²)3.2mm (1/8"): 8 ; 4.0mm ( 5/32"): 10Thickness tolerance ±0.2mmDimension tolerance±1.0mmDiagonal difference ≤0.1-0.2%Overall Bow/warp ﹤0.2%Local warp ≤ 0.3mm / 300mmFragmentation Test ≥ 40 particles in 25cm² EN12150-1MECHANICAL CHARACTERISTICSMechanical strength (N/mm²) ≥45 Annealed≥120 Tempered, EN12150-1Young modulus (GPa) 73.1 Poisson ratio 0.2 Knoop Hardness (kgf/mm²) 470Density (kg/m³) 2500 THERMAL CHARACTERISTICSHemispherical emissivity (corrected)0.84 Between -18℃and 66℃Expansion coefficient (/℃) 8.6×10﹣6 Between 25℃and 300℃Specific heat0.205 Between 0℃ and 100℃Thermal conductivity (W/m/K) 1 Softening point (℃) 723Annealing point (℃) 544Strain point (℃) 504
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