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Glass Corning EAGLE XG

PROPERTIES


Where applicable, units are stated in Metric and English

MECHANICAL

 

Metric

English

Density (20oC, 68oF)

2.38 g/cc

148.5 lb/ft3

Young’s Modulus

73.6 GPa

10.7 x 106 psi

Shear Modulus

30.1 GPa

4.4 x 106 psi

Poisson’s Ratio

0.23

Vickers Hardness 640 (200 gm load, 25 sec dwell)

640

THERMAL EXPANSION

0 — 300 oC

31.7 x 10-7/oC

(0 - 300oC)

17.7 x 10-7/oF

(32 - 572oF)

Room Temperature

35.5 x 10-7/oC

19.7 x 10-7/oF

To Setting Point

(25 - 675oC)

(77 - 1247oF)

THERMAL CONDUCTIVITY


Thermal Conductivity is a calculated value, and is equal to the product of the Thermal diffusivity multiplied by Specific Heat multiplied by Density of the glass.

Temp (oC)

Specific Heat

(J/gm-oK)

Thermal Diffusivity

(cm2/sec)

Thermal Conductivity

(W/cm-oK)

23

0.768

0.00601

0.0109

100

0.896

0.00572

0.0122

100

0.998

0.00546

0.0129

100

1.067

0.00530

0.0134

100

1.110

0.00522

0.0137

100

1.154

0.00518

0.0142

VISCOSITY

Working Point (104 poises)

1293

Softening Point (107.6 poises)

971

Annealing Point (1013 poises)

722

Strain Point (1014.5 poises)

669

ELECTRICAL

Log10Volume Resistivity (ohm-cm):

12.9 (250oC, 482oF)

  8.8 (500oC, 932oF)

 

Dielectric Constant: 5.27
(20oC/68oF – 1 kHz)

 

Loss Tangent: 0.30%
(20oC/68oF – 1 kHz)

CHEMICAL

Weathering: 1
Weathering is defined as corrosion by atmospheric-borne gases and vapor such as water and carbon dioxide. Glasses rated 1
will almost never show weathering effects, those rated 2 will occasionally be troublesome, particularly if weathering
products cannot be removed, those rated 3 require more careful consideration.

Durability:
Durability is measured via weight loss per surface
area after immersion. Values are highly dependent upon actual
testing conditions. Unless otherwise noted, concentrations
refer to weight percent.

 Reagent

 Time

 Temp

 Weight Loss (mg/cm2)

 HCl – 5%

 24 hrs

 95oC

 0.79

 HNO3 – 1M

 24 hrs

 95oC

 0.49

 HF – 10%

 20 min

 20oC

 5.18

 HF – 10%

 20 min

 20oC

 0.84

 1HF:10HNO3

 3 min

 20oC

 1.48

 1HF:100HNO3

 3 min

 20oC

 0.16

 DI H2O

 24 hrs

95oC

 0.00

 Na2CO3 – 0.02N

 6 hrs

 95oC

 0.16

 NaOH – 5%

 6 hrs

 95oC

 1.83

Total alkali content is approximately: 0.1 wt% (Typical < 0.05 wt%)

 Optical Wavelength  Refractive Index
 435.8 nm  1.5198
 467.8 nm  1.5169
 480 nm  1.5160
 508.6 nm  1.5141
 546.1 nm  1.5119
 589.3 nm  1.5099
 643.8 nm  1.5078
 

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Material Information .

Product Information.