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  • Ultra Clear Glass
  • Ultra Clear Glass

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Ultra Clear Glass
Ultra clear glass is low iron float glass, also called extra clear glass, a kind of float glass with low iron content and with light transmittance 91% or more.
Product description
Parameters

Ultra clear glass is low iron float glass, also called extra clear glass, a kind of float glass with low iron content and with light transmittance 91% or more. The superior light transmission, clarity and distinctive edge is achieved through the use of sand with much lower iron oxide content being used in the batch mix when the glass is manufactured on a float line.

Ultra clear glass has the characteristics of low spontaneous breakages, high purity, more beautiful especially the jewel-like blue edge. is perfect for applications with exposed edges, particularly when thicker sheets are specified.

Ultra clear glass is increasingly specified for decorative features, partitions, stairs and handrails,balustrades,furniture, shower and bath enclosures, kitchens and backsplashes, showcases cases and displays, entrances and storefronts. Ultra clear glass supports virtually limitless decorative treatments, such as: Dichroic Glass, Digital Ceramic Printing, Acid-Etched Glass, Ceramic Frit and other applications

Greentec Glass offers ultra clear glass from 3mm to 22mm, with super jumbo sizes to 18000x3600mm. 

Optical Parameters

Ultra Clear Low Iron Glass
thickLT of Visible Reflectance of Visible LightLT of SunlightShading CoefficientU valueAcousticUV transmittance



Direct PenetrationreflectionabsorptionTotal PenetrationShort WaveLong WaveTotal（W/m2K)Rm (dB)Rw (dB)Solar SeriesBuilding Series
2mm91.5％8％91％8％1％91％1.080.011.055.8252989％80％
3mm91.5 ％8％90％8％1％91％1.050.011.055.8263088％79％
3.2mm91.45％ 8％90％8％2％91％1.030.011.055.8263088％79％
4mm91.38％ 8％90％8％2％91％1.030.011.055.8273087.5％78％
5mm91.3％ 8％90％8％2％90％1.030.011.035.8293287％76％
6mm91.08％ 8％89％8％3％90％1.020.011.035.7293286.5％75％
8mm90.89％ 8％88％8％4％89％1.010.011.025.7313485.4％73％
10mm90.62％ 8％88％8％4％89％1.010.021.025.6333684％70％
12mm90.44％ 8％87％8％5％88％10.021.015.5343782.5％69％
15mm90.09％8％86％8％6％87％0.990.0215.5353881％67％
19mm89.73％ 8％84％8％7％86％0.970.020.995.5374080％65％
22mm89.6％ 8％82％8％9％85％0.950.020.975.5384380％64％
25mm89％8％81％8％9％84％0.930.020.955.5394579％62％

Mechanical Characteristics

Elasticity Modulus 73.1Gpa
Break Modulus（final anti-tension strength）41.4 Mpa
Rigidity456kgf/mm2

Physical Characteristics

Density2.5076 g/cm3
Linear Expansion Coefficient     40-300℃   9.28×10-6/℃
40-450℃9.75×10-6/℃
Transforming Temperature556℃
Softening Temperature or Bending Point 606℃
Softening Point710℃
Annealing Point547℃
Stress Point513℃
High-Temperature Viscosity log2    1392℃
log3    1152℃
log4    996℃
Liquid Phase Temperature         1008℃