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Momentive Performance Materials Type 254 Fused Quartz Tubing

Category Ceramic , Glass , Oxide , Silicon Oxide
Manufacturer Momentive Performance Materials (Former GE Quartz)
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Momentive Performance Materials Type 254 Fused Quartz Tubing.pdf
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Material Notes:
A doped quartz material that blocks virtually all UV-B and UV-C radiation. Ideal for lamps requiring maximum visible transmittance with nearly complete UV protection. Including some quartz halogen and metal halide lamps and other UV sources. Softening point 1615°C. Annealing point 1163°C. Strain point 1066°C.Data provided by GE Quartz.GE Quartz became a part of Momentive Performance Materials in 2006.
Physical Properties Metric English Comments
Density 2.21 g/cc
0.0798 lb/in³
Viscosity 1.30e+14 cP

@Temperature 1100 °C
 1.30e+14 cP

@Temperature 2010 °F
Mechanical Properties Metric English Comments
Knoop Microhardness 570
570
kg/mm²
Hardness, Mohs 5.5 - 6.5
5.5 - 6.5
(Type 214)
Modulus of Elasticity 70.0 GPa
10200 ksi
Young's Modulus
Compressive Strength 55.0 MPa
7980 psi
design compressive strength
Thermal Properties Metric English Comments
CTE, linear 0.400 µm/m-°C

@Temperature 20.0 °C
 0.222 µin/in-°F

@Temperature 68.0 °F
0.450 µm/m-°C

@Temperature 1000 °C
 0.250 µin/in-°F

@Temperature 1830 °F
0.600 µm/m-°C

@Temperature 500 °C
 0.333 µin/in-°F

@Temperature 932 °F
0.700 µm/m-°C

@Temperature 250 °C
 0.389 µin/in-°F

@Temperature 482 °F
Specific Heat Capacity 0.690 J/g-°C

@Temperature 0.000 - 50.0 °C
 0.165 BTU/lb-°F

@Temperature 32.0 - 122 °F
Thermal Conductivity 1.40 W/m-K
9.72 BTU-in/hr-ft²-°F
Softening Point 1615 °C
2939 °F
Annealing Point 1163 °C
2125 °F
Strain Point 1066 °C
1951 °F
Optical Properties Metric English Comments
Refractive Index 1.46
1.46
Transmission, Visible 92 %

@Thickness 1.00 mm
 92 %

@Thickness 0.0394 in
 (includes surface reflection losses)
IR Transmittance 93 %

@Wavelength 1000 - 3000 nm,
Thickness 1.00 mm
 93 %

@Wavelength 1000 - 3000 nm,
Thickness 0.0394 in
 Cutoff is at 5000 nm; (includes surface reflection losses).
UV Transmittance 0.00 %

@Wavelength <=230 nm,
Thickness 1.00 mm
 0.00 %

@Wavelength <=230 nm,
Thickness 0.0394 in
 Wavelength dependent - cutoff below 230 nm; less than 5% above 230 nm; (includes surface reflection losses)
Electrical Properties Metric English Comments
Electrical Resistivity 5.00e+10 ohm-cm

@Temperature 350 °C
 5.00e+10 ohm-cm

@Temperature 662 °F
Dielectric Constant 6.0

@Frequency 1e+6 Hz
 6.0

@Frequency 1e+6 Hz
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