Alumina and Zirconia Ceramic Parts
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Sentro Tech Corp. Provides Engineering solutions to various industries for their corrosion, wear, erosion and electric resistance application even at high temperature. Alumina or Zirconia Ceramic parts provides excellent high temperature resistance, size stability, electric insulation, thermal shock resistance, extremely corrosion and wear resistance.
Sentro Tech Corp. Provides alumina and zirconia ceramic parts for many applications:
- Furnace process tubes
- Steel tube liners
- Coal handling wear resistance pads
- Thermocouple protection tubes
- Sandblasting nozzles
- Wire drawing dies
- Bushings and caps
- Crucibles
- Tool bits
- Saggers
- Kiln furniture
- Mechanical seals
- Fuel cell parts
- Rollers for hearth furnaces
- Welding nozzles
- Laser parts
- Gas igniters
- Electric insulator
- Ceramic guiders
- Ceramic screwdrivers
- Zirconia oxygen Sensors
- Medical and surgical components
What We Do
We specialize on custom alumina and zirconia ceramic parts. Sentro Tech Corp. will work with you and provide solutions to meet your needs. Just simply Email ( info@sentrotech.com ) or fax us ( 1-440-260-0413) the specification sheet and drawing, we will provide the quotation to you.
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TYPICAL PHYSICAL PROPERTIES |
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MATERIAL |
ALUMINA |
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Composition |
99.80% AL2O3 |
99.5% AL2O3 |
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Bulk Specific Gravity (g/cc) |
3.9 |
3.8 |
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Color |
Ivory |
Ivory |
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Impenetrability |
Gas Tight |
Gas Tight |
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Dye Penetration A.S.T.M. |
Tight |
Tight |
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Flexural Strength (psi) |
70,000 |
50,000 |
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Compressive Strength (psi) |
370,000 |
350,000 |
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Tensile Strength (psi) |
43,000 |
33,000 |
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Maximum Working Temperature |
1800 oC |
1750 oC |
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Likely Sag Temp. Unsupported Tube* |
1600 oC |
1600 oC |
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Thermal Conductivity 24oC |
230 |
200 |
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(BTU-in/ft2-hr-oF) 800oC |
60 |
50 |
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Dielectric Strength 24oC V/Mil |
300 |
270 |
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Thermal Expansion (per oC x 10-6) |
8 |
8.4 |
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(24oC-1000 oC) |
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Hardness (Moh's scale) |
9 |
9 |
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*Temperature at which an empty tube, 1 1/4" diameter, suspended across an 18" span, will sag 1/4" in 1 hour. |
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Where sag is not acceptable, tubes must be adequately supported along the full length. |
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