Beijing Kaixingda Industrial Technology Development Co., Ltd.
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Specifications Borosilicate glass rod 3.3
1.Sample is available
2,Borosilicate glass rods for lighting and artistic glass
3,Heat-resistant
Borosilicate glass rod 3.3 Diameter:3mm-80mm colored and clear glass rod 3.3
Main composition:
1) SiO2: 80±0.5%
2) B2O3: 13±0.2%
3) Al2O3: 2.4±0.2%
4) Na2O(+K2O): 4.3±0.2% Chemical properties:
1) Coefficient of mean linear thermal expansion (20°C/300°C):
3.3±0.1 (10-6K-1)
2) Transformation temperature: 525±15°C
3) Working point: 1,260±20°C
4) Softening point: 820±10°C