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Comparison of Alumina, Mullite, and Quartz Tube of Properties

Chemistry

Max. Working Temperature (no load)

Thermo-conductivity

Thermo-expansion

Flexural Strength

Alumina  (99.8%)

1800 oC

8.2 W/m*oC

8.4 x 10^-6/oC

380 Mpa

Mullite   (60% Al2O3+ 38%SiO2)

1500 oC

3.6 W/m*oC

5.4 x 10^-6/oC

180 Mpa

Quartz (99.9% SiO2)

 1200 oC

1.4 W/m * oC

5.5 x 10^-7/oC

48 MPa

Please click to see detailed Typical Physical Properties of Fused Quartz Glass

1" & 1.57" ( 25  - 40 mm ) Quartz Tubes
1
2" & 2.75" (50 - 70mm) Quartz Tubes
2
3", 3.14", 3.5"  ( 75 - 80- 90 mm) Quartz Tube
3

4", 4.37" & 4.5" Quartz Tubes
4

 5" & 6" Quartz Tubes
6
1/8“,1/4", 1/2” & 3/4“  Quartz Tube
 for Vacuum Ampule &  fusion sealer

Vacuum Flanges for Tube Sealing (1" - 11")
Stainless Steel Sealing Flange Assembly for 1
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