borosilicate glass sheet

High borosilicate glass sheet Thickness:1mm-22mm It can be cut small pieces according to the requirements of customers. 1. Mechanical properties 2.23g/cm2 2. Thermodynamic properties Coefficient of mean linear thermal expansion (20°C/300°C):3.3±0.1 (10-6K-1) Thermal shock T 230 Heat capacity (0-100 ) 0.195cal / g Thermal Conductivity cal / cm s 0.0028 Maximum working temperature of short-term (<10h) 500 long-term (> 10h) 450 Softening point 820 ± 10 3. Chemical properties Water resistance ISO719/DIN12111 HGB1 ISO720 HGA1 Acid resistance ISO1776/DIN12116 1 4. Electrical properties Resistivity lgρ (25 ) 15 Dielectric constant ε4.9 Working field : widely used in high-temperature observation windows, lighting (high-power lighting panel), appliances, laboratory containers, solar, lighting and other fields.