Andy Company

Alumina Tubes

Alumina Tube Standard Purity 95%、99.35%、99.5%，99.7% Catalog # Outside Dia Inside Dia. AY- 5  5mm  3mm AY- 6  6mm  4mm AY- 8  8mm  5mm AY-10 10mm  7mm AY-12 12mm  8mm AY-14 14mm 10mm AY-16 16mm 12mm AY-20 20mm 14mm AY-25 25mm 19mm AY-30 30mm 25mm AY-40 40mm 34mm AY-50 50mm 44mm AY-60 60mm 53mm AY-70 70mm 63mm AY-80 80mm 70mm AY-85 85mm 75mm AY-90 90mm 80mm AY-100 100mm 90mm AY-110 110mm 100mm AY-120 120mm 110mm AY-130 130mm 120mm AY-140 140mm 130mm AY-150 150mm 140mm AY-160 160mm 150mm AY-170 170mm 160mm AY-180 180mm 170mm AY-190 190mm 180mm AY-200 200mm 190mm AY-210 210mm 200mm Andy Company Offers High Purity Alumina Tubes. Both Metric and American sizes are available. These alumina tubes offer: Extreme high temperature stability under reducing, inert and high vacuum condition under high temperature up to 1800C. Extreme wear and abrasion resistance. Chemical corrosion resistance under high temperature. High dielectric properties. Gas tight for many applications to provide protective atmospheres or high vacuum at high temperature to eliminate contamination or impurity. Low material cost and custom size available. TYPICAL PHYSICAL PROPERTIES AL2O3      %Composition 60 75 80 85 92 95 99 99.7 Density（g/cm3） 3.0 3.1 3.3 3.4 3.6 3.7 3.81 3.85 Flexural Strength(MPa) 205 280 215.7 230 312 304 340 370 Thermal Expansion (?0-6/°C) （25-800°C） 7.1 7.6 7.6 7.6 7.5 7.3 7.6 7.6 Thermal Conductivity [w/(m.R)] 16 17 17 17 18 20 34 35 Dielectric Strength  (KV/mm) 10 10 10 10 10 10 10 10 Resistivity (Ω.cm) 20°C ＞1014 ＞1014 ＞1014 ＞1014 ＞1014 ＞1014 ＞1014 ＞1014 300°C ＞1013 ＞1013 ＞1013 ＞1013 ＞1013 ＞1012 ＞1010 ＞1010 Working Temp. 1350°C 1000°C 1250°C 1290°C 1390°C 1480°C 1600°C 1700°C Hardness (Moh'sscale) 7.5 7.5 7.5 7.5 8.5 8.8 9 9 耐火度 1800 1700 1800 1850 1920 2000 2030 2040