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1.Normal size(OD*W (mm))
For light wall :
10*1.5, 12*2.2, 13*1.8, 16*1.2, 19*2.4,
7.0*1.5, 8*1.5, 9*2.0, 10*1.5,
12*2.0, 12*2.2, 18*1.8, 9*2.0
2.Main Composition
a) SiO2: 80±0.5%
b) B2O3:13±0.2%
c) Al2O3:2.4±0.2%
d) Na2O(+K2O):4.3±0.2%
3.Physical and Chemical Properties
a) Coefficient of mean linear thermal expansion(20/300℃):3.3±0.1(10-6K-1)
b) Transformation temperature: 525±15℃
c) Melting point::1,260±20℃
d) Softening point:820±10℃
e) Density at 20℃:2.23g/cm2
f) Hydrolytic resistance at 98℃: ISO719-HGB1
g) Hydrolytic resistance at 121℃: ISO720-HGA1
h) Acid resistance class:ISO1776-1
i) Alkali resistance class:ISO695-A2 |
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