heat resistant borosilicate 3.3 glass tubing

Product Overview

Description

borosilicate 3.3 glass tubing

Borosilicate 3.3 glass tube are of good quality such as

High Resistance to Thermal Shock

High Hydrolytic Resistance

High Chemical Resistance

 

 Physical performance

Coefficient of mean linear thermal expansion(20,300)    3.3±0.1 10^-6K^-1

Transformation temperature                                         525±15

Softening point                                                           820±10

Working point                                                            1260±20

Density at 20                                                             2.23±0.02g/cm³

Mean thermal conductivity(20-100)                              1.2w/m²k

Refractive index                                                          0.92

 

Main Composition

SiO_{2                      81}

B₂O_{3                     13}

Na₂O+K₂O        4

Al₂O_{3                     2}

 

Chemical Property

Hydrolytic resistance at 98          ISO719-HGB 1

Hydrolytic resistance at 121        ISO720-HGA 1

Acid resistance Class                 ISO1776-First Class