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High-frequency porcelain 95% al2o3 alumina welding ceramic nozzle for sandblasting
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US$ 1
≥10 Pieces
Quick Details
Material:
Alumina Ceramic
Place of Origin:
Hunan, China
Model Number:
QY23101701
Brand Name:
QY
Product Details
High-frequency porcelain 95% al2o3 alumina welding ceramic nozzle for sandblasting
Product Description
| Test item | alumina | |||
| index | unit | AL997 | AL99 | AL95 |
| Principal component content | N/A | 99.70% | 99% | 95% |
| Color | N/A | ivory white | ivory yellow | White |
| Gas permeability | N/A | airtight | airtight | airtight |
| density | g/cm3 | 3.9 | 3.8 | 3.7 |
| hardness | Moh's hardness | 9 | 9 | 8.8 |
| Water Absorption | N/A | ≤0.2 | ≤0.2 | ≤0.2 |
| Bending strength (20°C) | Mpa | 375 | 340 | 304 |
| Compressive Strength (20°C) | Mpa | 2300 | 2210 | 1910 |
| Coefficient of thermal expansion (25°C to 800° C) | 10X6/° C | 7.6 | 7.6 | 7.6 |
| Insulation strength (5mm thickness) | AC-kv/mm | 10 | 10 | 10 |
| Dielectric loss 25°C lMHz | N/A | v0.0001 | 0.0006 | 0.0004 |
| dielectric constant 25°C MHz | N/A | 9.8 | 9.5 | 9.2 |
| Volume resistivity (20°C) (300°C) (500 °C) | Ω.cm3 | >1014 | >1014 | >1014 |
| 2X1012 | 4X10" | 2X10" | ||
| N/A | N/A | N/A | ||
| Long-term service temperature | ℃ | 1700 | 1600 | 1400 |
| Thermal conductivity (25° C) | W/m/K | 35 | 34 | 20 |
Material Properties
- Excellent electrical insulation properties
- High hardness and mechanical strength
- Wear and abrasion resistant
- High thermal conductivity and thermal shock resistance
- Low density
- Resistant to strong acid and alkali attack at high temperatures
- Transparent to microwave radio frequencies
- High compressive and dielectric strength
- Very specific thermal conductive and thermal expansion rates
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