Alumina Crucible / Alumina Boat

High Purity Alumina Crucible/Boat, 99.6% Al2O3 Alumina Ceramic Crucible/Boat

High purity alumina products can withstand very high temperatures under reducing, inert or high vacuum conditions. They remain good chemical resistance under high temperature and have excellent wear and abrasion resistance. Alumina products can withstand up to 1800℃.

 

Feature
●  Alumina purity: 99.6%
●  Color: Ivory
●  Sintering temperature: 1810℃
●  Max. working temperature: 1800℃
●  Sag Temp. Unsupported Tube: 1600℃

Chemical Composition (%)Al2O3>99.6
SiO2<0.1
Fe2O3<0.05
R2O<0.1

 

Standard size:

Alumina crucible

Capacity (ml)Specification (mm)Capacity (ml)Specification (mm)
5Dia20x25x2250Dia65x80x3
10Dia29x33x2.5280Dia65x105x3
20Dia34x38x2.5300Dia85x60x3
30Dia38x44x2.5320Dia70x100x3
40Dia42x45x2.5400Dia90x90x4
50Dia45x48x2.5450Dia80x115x3.5
60Dia47x47x2.5600Dia85x130x3.5
70Dia50x55x2.5750Dia91x140x3.5
80Dia50x56x2.5800Dia95x135x4
100Dia52x60x2.5900Dia95x160x5
120Dia45x120x2.5950Dia100x150x4
130Dia57x66x2.51200Dia120x120x5
150Dia50x100x2.51250Dia100x200x5
170Dia50x120x2.52000Dia120x260x5
  2500Dia155x150x5mm

 

Alumina Boat (semi-circle type or rectangle type )

Capacity (ml)Specification (mm)
1570x20x15mm
2065x30x17mm
20100x12x15mm
150120x60x25mm
200100x100x27mm

Other sizes can be produced according to your requirement.

Note: Alumina products are sensitive to thermal shock. Try to warm up the furnace chamber slowly. A heating rate between 150℃~300℃/hour is recommended for the first 1-1.5hours so that the alumina products can be evenly heated to reduce the impact of thermal shock.