Clear Technical Product Data 

 
PRODUCT DESCRIPTION
Clear glass by Vitro Architectural Glass is a soda-lime float glass product with a slightly green inherent color that
deepens as thickness increases. Its relatively high visible light transmittance (89% at 6mm) and its greenish edge are
two characteristics. Clear glass mechanical and physical properties are similar to other soda-lime float glass products.

APPROXIMATE WEIGHTS MECHANICAL PROPERTIES

Per m2 Per ft2 Knoop Hardness Number (indentation hardness)
470 kgf/mm2
indenter load--500 gm
thickness weight thickness weight
Poisson's Ratio 0.22
2.5 mm 6.9 3⁄ 1.3 lbs
32
Modulus of Elasticity (Young’s) 73.1 GPa 10,600,000 psi
3.0 mm 8.2 kg ⅛ 1.5 lbs
Tensile Strength (Determined as Modulus of Rupture,
4.0 mm 9.9 kg 5⁄ 2.0 lbs 41.4 MPa 6,000 psi
32 ultimate)
5.0 mm 11.9 kg 3⁄ 2.4 lbs Density at 21°C ( 70°F) 2.51 g/cm 3 157 lb/ft3
16

6.0 mm 14.2 kg ¼ 2.9 lbs

8.0 mm 19.8 kg 5⁄
16 4.0 lbs THERMAL PROPERTIES
10.0 mm 23.8 kg ⅜ 4.9 lbs Hemispherical Emissivity at -18 to 66 °C (0 to 150°F))
0.84 / 0.14
glass / coating
12.0 mm 31.8 kg ½ 6.4 llbs
Expansion Coefficient (linear) 20 to 300°C (68 to 572°F) 8.6*10-6/ °C 4.8*10-6/ °F
16.0 mm 41.0 kg ⅝ 8.0 ilbs
Specific heat at 0 to 100°C ( 32 to 212°F) 858 J/kg-K 0.205 Btu/lb-°F
19.0 mm 50.9 kg ¾ 10.0 lbs
Thermal Conductivity (k) at 50°C (122°F) 0.937 W/m-K 0.542 Btu/hr-ft-°F

COLOR Softening Point 723°C 1333°F

6.0mm Annealing Point 544°C 1011°F
Strain Point 504°C 939°F
Transmitted Color: D65, 10° L* 95.4
a* -1.8
b* 0.1
SUSTAINABILITY
To provide architects with the assurance and documentation they need to meet and verify their
Hue Angle (°) 176
sustainability goals, Vitro Architectural Glass participates in a range of programs and initiatives.
Dominant wavelength: C, 2° 496 nm Resources available include, but are not limited to:
Type III Environmental Product Declarations
Cradle to Cradle Certifiied™ Bronze with associated Gold Material Health Certificate
LEED® and Living Building Challenge documentation
CHEMICAL COMPOSITION Material Ingredient Disclosure and Safety Data Sheets
SiO2 73% Annual Corporate Sustainability Report
Na2O 14% Further information is available through VitroGlazings.com or by calling 855-887-6457 (VTRO GLS)

CaO 9%
MgO and Trace elements 4%

SOLAR PERFORMANCE VALUES [1]

Glass Thickness Transmittance Reflactance

inches mm Ultra-violet (%) Visible (%) Infrared (%) Total Solar (%) Visible (%) Total Solar (%)

⅛ 3.0 73 90 78 83 9 8
5⁄ 4.0 71 90 75 81 9 7
32
3⁄ 5.0 69 89 72 79 9 7
16
¼ 6.0 66 89 69 77 8 8
5⁄ 8.0 61 88 62 72 8 7
16
⅜ 10.0 58 87 56 69 8 7
½ 12.0 53 85 48 64 8 6
⅝ 16.0 40 82 41 59 8 6
¾ 19.0 38 81 38 57 8 6

Figures may vary due to manufacturing tolerances. All tabulated solar performance data are based on the methodology prescribed in ISO 9050, 2003 except Infrared, which is based on the
[1]

solar irradiance data prescribed by ISO 9050, 2003 from 780 to2500 nm. Slight changes in transmitted optical properties may occur on exposure to sunlight.

  Vitro Architectural Glass VitroGlazings.com 1.855.887.6457 / 1.855.VTRO.GLS April 2019

Glass Technology Center archservices@vitroglazings.com
400 Guys Run Rd.Pittsburgh, PA 15024 Page 1 of 2
 Clear Technical Product Data 
 
Transmittance (% at 6 mm/0.223”)
Wavelength Clear Wavelength Clear Wavelength Clear Wavelength Clear Wavelength Clear
(nm) Glass %T (nm) Glass %T (nm) Glass %T (nm) Glass %T (nm) Glass %T
300 0.0 430 87.7 660 83.5 890 67.1 1600 76.5
305 0.0 440 87.8 670 82.8 900 66.8 1650 77.2
310 0.1 450 88.3 680 81.9 910 66.4 1700 77.5
315 0.7 460 89.0 690 81.2 920 66.1 1750 77.5
320 3.5 470 89.3 700 80.2 930 65.8 1800 77.2
325 10.7 480 89.4 710 79.4 940 65.6 1850 76.9
330 22.8 490 89.6 720 78.6 950 65.4 1900 76.7
335 37.5 500 89.7 730 77.7 960 65.1 1950 76.7
340 51.5 510 89.8 740 77.0 970 65.0 2000 76.6
345 63.2 520 89.8 750 76.2 980 64.8 2050 76.7
350 71.8 530 89.7 760 75.2 990 64.6 2100 76.8
355 77.8 540 89.5 770 74.4 1000 64.5 2150 76.4
360 81.7 550 89.3 780 73.6 1050 64.1 2200 74.0
365 83.8 560 89.0 790 72.9 1100 64.1 2250 74.3
370 84.4 570 88.7 800 72.2 1150 64.3 2300 75.2
375 83.0 580 88.3 810 71.5 1200 64.8 2350 74.9
380 82.4 590 87.9 820 70.9 1250 65.6 2400 75.2
385 84.2 600 87.3 830 70.1 1300 66.8 2450 73.8
390 86.2 610 86.8 840 69.7 1350 68.2 2500 72.7
395 87.2 620 86.2 850 68.8 1400 69.7
400 87.7 630 85.5 860 68.6 1450 71.7
410 87.7 640 84.9 870 68.0 1500 73.7
420 87.6 650 84.2 880 67.5 1550 75.3

ADDITIONAL INFORMATION/DOCUMENTS
The following documents can be referenced for additional information regarding Clear glass;
Clear Performance Data, Vitro Float Glass Warranty, Vitro Float Glass SDS, C2C Material Health Certificate, Vitro Float Glass EPD

  Vitro Architectural Glass VitroGlazings.com 1.855.887.6457 / 1.855.VTRO.GLS April 2019

Glass Technology Center archservices@vitroglazings.com
400 Guys Run Rd.Pittsburgh, PA 15024 Page 2 of 2