Sunmax by AGC-Solar is extra clear float glass for solar mirrors, thermal collectors and photovoltaic modules.

Sunmax™

Extra clear float glass for solar mirrors, thermal collectors and photovoltaic modules.

Type

 

 

Extra clear float glass.

 

Applications

 

 

Cover glass for photovoltaic modules

(crystalline, CIGS)

Cover glass for thermal collector

Front glass for thin film Si and CdTe

Substrate for solar mirrors

SUNMAX is an extra clear float glass especially optimized for solar applications. Combined with the excellent durability of glass, SUNMAX is the product of choice for photovoltaic modules, thermal collectors and solar mirrors. 

SUNMAX conforms to EN572 and can be delivered fully tempered as per EN12150.

MAIN CHARACTERISTICS

Light Transmission (%)

1mm - 1/25”: 91.7

Illuminant D65 at 2° (acc. +/- 0.2%)

 

3.2mm - 1/8”: 91.6

Illuminant D65 at 2° (acc. +/- 0.2%)

 

4mm - 5/32”: 91.5

Illuminant D65 at 2° (acc. +/- 0.2%)

Energy Transmission (%)

1mm - 1/25”: 91.6

ISO9050

 

3.2mm - 1/8”: 90.7

ISO9050

 

4mm - 5/32”: 90.4

ISO9050

    Certification

3.2mm - 1/8"

SPF measurement, labelled U1

4mm - 5/32"

SPF measurement, labelled U2

Specific weight (kg/m²)

1mm - 1/25”: 2.5

 

 

3.2mm - 1/8”: 8

 

 

4mm - 5/32”: 10

 

Processing conditions and dimensions depending on the applications.

AGC can help evaluating these values according to other standards and/or to the specificities of the final application.

 

MECHANICAL CHARACTERISTICS

Mechanical strength (MPa)

45

Annealed

 

70

Toughened

 

120

Tempered, EN12150

Young modulus (GPa)

70

EN572

Poisson ratio

0.2

EN572

Hardness

Mohs (scratch hardness)

6

 

 

Knoop (identation hardness)

470

Indenter load 500g

Density (kg/m³)

2500

EN572, at 18°C

 

THERMAL CHARACTERISTICS

Hemispherical emissivity (corrected)

0.84

Between -18°C and 66°C

Expansion coefficient (10-6 1/K)

9

EN572, between 20°C and 300°C

Specific heat (J/kg/K)

720

EN572

Thermal conductivity (W/m/K)

1

EN572

Softening point (°C)

722

 

Annealing point (°C)

552

 

Strain point (°C)

500

 

 

CHEMICAL COMPOSITION

Silicon dioxide (SiO2, %)

69 to 74

EN572

Sodium oxide (Na2O, %)

10 to 16

EN572

Calcium oxide (CaO, %)

5 to 14

EN572

Magnesium oxide (MgO, %)

0 to 6

EN572

Aluminum oxide (Al2O3, %)

0 to 3

EN572

Trace elements (FeO, etc., %)

< 5