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Material Properties for Quartz Glass

Physical Properties

Properties

Value

Mechanical   Properties

Density

2.203g/cm3

Compressive Strength

1100Mpa

Bending Strength

67Mpa

Tensile Strength

48.3Mpa

Poisson's Ratio

0.140.17

Young’s Modulus

72000Mpa

Rigidity Modulus

31000Mpa

Mohs Hardness

5.56.5

Thermal Properties

Deformation Point

1280

Softening Point

1680

Annealing Point

1210

Specific Heat (20350)

670J/kg.

Thermal Conductivity (20)

1.4W/m.

Coefficient of thermal expansion

5.5×10-7cm/cm.

Hot Work Temperature

17002000

Short-term Use Temperature

1300

Long-term Use Temperature

1100

Electrical   Properties

Resistivity

7×107Ω.cm

Dielectric Strength

250400Kv/cm

ε/ Dielectric Constant

3.73.9

Dielectric absorption coefficient

<4×104

Dielectric loss coefficient

<1×104

 

Chemical Properties

Solution

Treatment condition

Corrosion capacity

H2O

95 45Hours

1~2×10-7  g/cm2

98%H2SO4

20 2Hours

1.4×10-8  g/cm2

60%HNO3

20 2Hours

5.0×10-8  g/cm2

36%HCl

20 2Hours

15×10-8   g/cm2

5%NaOH

100 10Hours

1.35×10-3  g/cm2

1%KOH

98 2Hours

68×10-6   g/cm2

 

Purity

 

Name

Impurities ppm

Synthetic

CVDJGSI

Oxy-hyd melting

JGS2

Electrical melting

JGS3

Al

0.16

17.00

14.44

Fe

0.01

0.36

1.46

Ca

0.31

1.30

2.45

Mg

0.65

0.22

0.46

Ti

0.08

1.3

4.84

Cu

0.01

0.04

0.16

Ni

0.01

0.01

0.04

Co

0.04

0.01

0.02

Mn

0.01

0.03

0.08

K

0.34

0.63

2.16

Na

0.06

1.11

1.33

Li

0.01

0.63

0.81

B

/

0.08

0.05

OH

1100~1300

150~250

1~120

SiO2

>99.999%

99.99%

99.92%

 

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