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Name: borosilicate glass
Chemical composition :
SIO2
80.1
B2O3 12.5
AL2O3 2.3-2.5
Na2O K2O 4.3
Thermal propties:
expansion 32.0 /-1 x 10-7 celsius
density at 20 C : 2.23 G/cm3
softening point: 820 celsius
Size errors :
diameter tolerance: /- 1mm
wall thickness tolerance: /-0.2mm
bend degree:4/1000
Chemical composition:
A1 Fe K Na Li Cu Mn
30 2 0.5 0.6 1 1.5 1
Physical Properties:
Density 2.2 X 10-3kg/m2
Soften Point 1500/1670 Degree Celsius
Annealing Point 1163/1215 Degree Celsius
Expansion 5.5 X 10-7 cm/cm.
Tolerance:
Dia 40mm - Dia 40mm
Outer Diameter /-0.5 /- 2
Wall thickness /-0.3 /-0.6
