• Low expansion with high thermal shock resistance with excellent dimensional stability. 

• Glassco Quartzware shows no visible surface change in prolonged exposure gases,\n ozone, water, nitrogen oxide and other contaminants.

Coefficient of Linear Expansion : 0°C to 800°C -7 5.5 x 10 cm/°c

Strains Point : 1120°C 

Annealing Point : 1200°C 

Softening Point : 1685°C 

Electrical Conductivity (at 350°C) 7x10 ohm cm