Products View: 1.Alumina crucibles Alumina Crucibles are manufactured for more than 20 years and have a skill production technology in different shapes and range of sizes from few milliliters to several liters, these fully dense, high purity an high temperature use,fine grain products find use in a range of high temperature applications such as metal processing / molten glass, rapid thermal cycling, gemstone purification for jewelry industry etc. Majodrity of applications require the ceramic to be impervious, porous forms can also be made on order. Property: Purity:≥99.7% Density:3.85g/cm3 Compressive Strength:2500Mpa Flexural Strength: 360Mpa Thermal Shock : good Max service temperature: 1800℃ High Form Crucibles -(99.7%)   Type Capacity (ml) Top Out Diameter Bottom Out Diameter Out Height AY-A1-6 6  in mm in mm in mm 0.98 25 0.59 15 1.10 28 AY-A1-11 11 in mm in mm in mm 1.14 29 0.71 18 1.34 34 AY-A1-20 20 in mm in mm in mm 1.42 36 0.91 23 1.61 41 AY-A1-30 30 in mm in mm In mm 1.50 38 0.98 25 1.77 45 AY-A1-50 50 in mm in mm in mm 1.89 48 1.18 30 2.05 54 AY-A1-100 100 in mm in mm in mm 2.28 58 1.38 35 2.68 68 AY-A1-150 150 in mm in mm in mm 2.6 68 1.57 40 3.15 80 AY-A1-200 200 in mm in mm in mm 2.87 73 1.73 44 3.38 86 AY-A1-250 250 in mm in mm in mm 3.11 75 1.65 46 3.66 95 AY-A1-300 300 in mm in mm in mm 3.27 83 1.97 50 4.17 106 AY-A1-350 350 in mm in mm in mm  3.34 85  2.16 55  4.33 110 AY-A1-400 400 In mm in mm in mm 3.58 91 2.20 56 4.25 108 AY-A1-500 500 In mm in mm in mm 3.89 99 2.55 65 4.52 115 AY-A1-750 750 in mm in mm in mm 3.89 99 2.55 65 5.35 136 AY-A1-1000 1000 in mm in mm in mm 4.92 125 3.23 82 5.83 148 AY-A1-2000 2000 in mm in mm in mm 6.26 159 3.54 90 6.89 175     Cylindrical Crucibles - (99.7%)   Type Capacity (ml) Diameter Height AY-A2-6 6  in mm in mm 0.748 19 1.02 26 AY-A2-11 11 in mm in mm 0.98 25 0.98 25 AY-A2-15 15 in mm in mm  0.87 22 1.30 33 AY-A2-50 50 in mm in mm 1.77 45 1.38 35 AY-A2-100 100 in mm in mm 1.575 40 3.74 95 AY-A2-200 200 in mm In mm 3.35 85 1.97 50 AY-A2-250 250 in mm in mm 2.32 60 3.94 100 AY-A2-400 400 in mm in mm 2.95 75 3.94 100 AY-A2-500 500 in mm in mm 2.84 72 5.83 148 AY-A2-750 750 in mm in mm 3.31 84 6.3 160 AY-A2-900 900 in mm in mm 3.54 90 6.50 165 AY-A2-2200 2200 in mm In mm 5.91 150 5.91 150 AY-A2-2700 2700 in mm in mm 6.30 160 6.30 160 AY-A2-5200 5200 In mm In mm 7.87 200 7.87 200   Rectangular boats- (99.7%)   Type  Capacity (ml) Length Width Height AY-A3-30 30  in mm in mm in mm 2.13 54 1.50 38 0.79 20 AY-A3-60 60 in mm in mm in mm 3.23 82 1.65 42 0.91 23 AY-A3-100 100 in mm in mm in mm 2.56 65 2.56 65 1.18 30 AY-A3-150 150 in mm in mm in mm 3.54 90 2.56 65 1.18 30 AY-A3-800 800 in mm in mm in mm 95 202 4.21 107 1.97 50   Note:Other specifications can be customized according to drawing. TYPICAL PHYSICAL PROPERTIES AL2O3      %Composition 60 75 80 85 92 95 99 99.8 Density（g/cm3） 3.0 3.1 3.3 3.4 3.6 3.7 3.81 3.91 Flexural Strength(MPa) 205 280 215.7 230 312 304 340 370 Thermal Expansion (×10-6/℃) （25-800℃） 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℃ ＞1014 ＞1014 ＞1014 ＞1014 ＞1014 ＞1014 ＞1014 ＞1014 300℃ ＞1013 ＞1013 ＞1013 ＞1013 ＞1013 ＞1012 ＞1010 ＞1010 Max Service Temp. 1350℃ 1100℃ 1300℃ 1350℃ 1500℃ 1600℃ 1700℃ 1800℃ 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