• Laiyang Zhong Cheng Quartz Glass Co., Ltd

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Quartz parts, through the CNC machining center, realize the precise and difficult machining of the curved surface, the inclined surface, the groove area, the spherical surface, the cylindrical surface, the aperture, and the cone angle of the product. The minimum aperture can reach 0.8 mm, and the minimum geometric tolerance can reach ±0.02 mm. The finish, surface shape, roughness and raw materials can be customized according to customer requirements. High product accuracy and long service life.

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

0.14～0.17

Young’s Modulus

72000Mpa

Rigidity Modulus

31000Mpa

Mohs Hardness

5.5～6.5

Thermal Properties

Deformation Point

1280℃

Softening Point

1680℃

Annealing Point

1210℃

Specific Heat (20～350℃)

670J/kg.℃

Thermal Conductivity (20℃)

1.4W/m.℃

Coefficient of thermal expansion

5.5×10-7cm/cm.℃

Hot Work Temperature

1700～2000℃

Short-term Use Temperature

1300℃

Long-term Use Temperature

1100℃

Electrical   Properties

Resistivity

7×107Ω.cm

Dielectric Strength

250～400Kv/cm

ε/ Dielectric Constant

3.7～3.9

Dielectric absorption coefficient

<4×104

Dielectric loss coefficient

<1×104

 

Chemical Properties

Solution

Treatment condition

Corrosion capacity

H2O

95℃ 45（Hours）

1~2×10-7  g/cm2

98%H2SO4

20℃ 2（Hours）

1.4×10-8  g/cm2

60%HNO3

20℃ 2（Hours）

5.0×10-8  g/cm2

36%HCl

20℃ 2（Hours）

15×10-8   g/cm2

5%NaOH

100℃ 10（Hours）

1.35×10-3  g/cm2

1%KOH

98℃ 2（Hours）

68×10-6   g/cm2

 

Purity

 

Name

Impurities ppm

Synthetic

（CVD）JGSI

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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