QUARTZ TUBE

Product Description

Quartz tube cap Inner diameter (D inner): min. 30, max. 31 mm

Thickness (d): 2.0 mm ± 0.5 mm

Height (H): min. 7 mm

Quartz tube 

Outer diameter (D outer): min. 27 mm, max. 28 mm

Inner diameter (Dinner): min. 25 mm, max. 26 mm

Thickness (d): 2.0 mm ± 0.2mm

Reference standard FDG600
Uv transmittance 190nm >=40
Uv transmittance 254nm >=87
Al 23.2ppm
Fe 4.8ppm
Ca 3.1ppm
Mg 2.5ppm
Li 2.0ppm
K 5.4ppm
Na 6.1ppm

Typical Physical Properties
Soften Point 1680°C
Back light 1210°C
Strain point 1120°C
Density 2.2g/m³
Hardness 5.5-6.5Mohs'
Tensile strength 4.8 *10 TN/m2
compressive strength 1.1*109N/m2
Coefficient of thermal expansion (20-230°C) 5.7*10-Tcm/cm.°C
Heat conductivity(20°C) 1.4w /m ℃
specific heat 670J/kg.°C
electrical resistivity 7*10-Tohm.cm
dielectric constant 3.75
insulating strength 5*107v/m