Heat resistant 3.3 glass borosilicate colored tube

Heat resistant 3.3 glass borosilicate colored tube
 Density
 2.23 g/cm3
 Hardness
 >7
 Modulus of elasticity
 63·103N·mm-2
 Poisson's ratio 0.18
 Tensile strength
 4.8x107pa(N/M2)
 Compressive strength
 (0-300) 3.3±0.1×10-6K-1
 Poisson's ratio
 0.18
 Coefficient of thermal expansion
 (0-300) 3.3±0.1×10-6K-1
 Thermal conductivity
 1.2W·m-1·k-1
 Softening point
 820±10°C
 Annealing point
 560°C 
 Strain point
 516±10°C
 Electrical resistivity
 >1018 Ωm
 Dielectric constant
 4.6 1 MHz, 25

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Glass tube 11

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