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Global Manufacturer and Distributor of  Ceramic Crucibles and Labwares

Quartz Labware

Thermal Properties

Thermal Conductivity1.38(W/m°K)
Coefficient Of t\Thermal Expansion(0~1000°C)0.55(10-6/°C)
Normal Operating TemperatureContinuous Usage~1050°C
Non Continuous Usage~1250°C
Strain Point~1075°C
Annealing Point~1180°C
Hot Pressing Temperature~1700°C – 2100°C
Devitrification TemperatureStarting at ~1000° C. high temperature accelerates Devitrification, especially with surface contaminants such as alkaline solution, salts and vapors.

Physical Properties

 Units of MeasureValue
Densitygm/cc (lb/ft3)2.2
Tensible Strength106 Pa48.3
Young’s Modulus106 Pa71.7
Thermal ConductivityW/m°K1.38
Coefficient of Thermal Expansion10-6/°C0.55
Specific HeatJ/Kg.°K740
Dieletric StrengthAc-kv/mm (volts/mil)30
Dieletric Constant@1MHz3.82
Index of refraction @ 587.6nm1.4585

Fused Quartz Average Transmission Curve

Includes Surface Reflection Losses