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Borosilicate Glass

For Price Order(Bag): Negotiable

Category:
Special Glass/High Borosilicate Glass
Price:
Negotiate
Sample:
Yes
Trade Terms:
FOB,EXW,CFR,CIF,Others
Payment Terms:
L/C,T/T,Western Union,Others
Package:
Wooden case
Post Date:
2020/04/15

Product Details

Mohs rating

37
OEM

47

Ultra clear Borosilicate Sight Glass

Specifications
1. Excellent visual effect
2. Powerful effect on Fire, hydrolysis and Chemical Resistance
3. High resistance to thermal shock.
NOVAL BOROSILICATE FLOAT GLASS DESCRIPTION
NOVAL GLASS Borosilicate glass has a very low thermal expansion coefficient, about one-third that of ordinary glass. This reduces material stresses caused by temperature gradients, thus making it more resistant to breaking. This makes it a popular material for objects like telescope mirrors, where it is essential to have very little deviation in shape. It is also used in the processing of high-level nuclear waste, where the waste is immobilised in the glass through a process known as vitrification (contrast with Synroc).

Mechanical properties
Density (g/cm3) (at 25°C)	2.23±0.02
Knoop hardness	480
Flexure strength	24Mpa
Thermodynamic properties
Coefficient of thermal expansion (α) (0-300°C)	3.3±0.1×10-6
Softening point (°C)	830±10
Strain point (°C)	521±10
Specific heat capacity	(2-100°C)0.83KJ×(kg×K)-1
Thermal conductivity	1.2W×(m×k)-1
Thermal shock resistance(K)	300
Temperature performance(K)	200
Maximum working temperature	(>10h, 600°C), (>10h, 550°C)
Chemical properties
Water resistence	ISO719/DIN12111, HGB1 ISO720, HGA1
Acid resistance	ISO1776/DIN12116, 1
Alkali resistance	ISO695/DIN52322, A2
Optical properties
Refractive index	Nd: 1.47379
Transmittance (5mm)	>92%
Electrical properties
Specific resistance 1g	250°C, 8.0Ω×cm
Dielectric loss	Tan , 38×(10)-4
Dielectric Constant	4.7
Chemical component
SiO2	79-82%
B2O3	8-14%
Na2O	2-4%
Al2O3	1-6%

BOROSILICATE FLOAT GLASS 3.3
1. Household electrical appliance (panel for oven and fireplace, microwave tray etc. );
2. Environmental engineering and chemical engineering (Lining layer of repellence, autoclave of chemical reaction and safety spectacles);
3. Lighting (spotlight and protective glass for jumbo power of floodlight);
4. Power regeneration by solar energy (solar cell base plate);
5. Fine instruments (optical filter);
6. Semi-conductor technology (LCD disc, display glass);
7. Iatrology and bio-engineering;