Jinghui Industry Limited
Jinghui Industry Limited
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Features of alumina ceramic eyelet guide:
1. Exceptional hardness, bending strength, toughness
2. Good insulation, anti-magnetic, free static electricity
3. Corrosion resistance in harsh working conditions
4. Excellent thermal shock resistance and good thermal stability
5. Nox-toxic, healthy material, eco-friendly material
6. Meet with RoHS, REACH regulation completely
Specification of alumina ceramic eyelet guide:
1. Raw material: 95% alumina, 99% alumina, zirconium oxide, titania
2. Dimensions: min. diameter can be 2mm, max. diameter can be 50mm
3. Shape: Single flanged, double flanged, slotted, grooved, tubed and so on
4. Tolerance: general tolerance ± 1% of the dimensions, or better via a precision process
5. Surface finish: mirror surface, to be Ra0.3 ~ 0.4 for 95% alumina ceramic eye, to be Ra 0.2 ~0.3 for 99% alumina ceramic eye
Description of alumina ceramic eyelet guide
Alumina ceramic eyes are extremely versatile parts in wire, thread, cable, fiber passaging applications because the material is very hard, wear-resistant, and chemical resistant, and the working surface can be polished to a smooth finish. Our facility provides ceramic eyes in a wide range of standard sizes and configurations to meet your needs. We also offer custom ceramic eyelets, ceramic eyes designed and manufactured to match your exact requirements, including different materials, special shapes.
| Property | Units | 95% alumina | 99% alumina | 99.5% alumina | Zirconia | Titania |
| Color | White, pink | White, pink, ivory | Pink, ivory, white | White, Yellow | Black, Gray, Yellow | |
| Density | g/cm3 | ≥3.60 | ≥3.80 | ≥3.85 | ≥6.0 | ≥4.0 |
| Water absorption | % | 0 | 0 | 0 | 0 | 0 |
| Hardness | HV | 1500 | 1700 | 1700 | 1300 | 800 |
| Flexural strength | Mpa | ≥320 | ≥338 | ≥379 | ≥1200 | ≥158 |
| Compressive strength | Mpa | ≥2000 | ≥2240 | ≥2240 | ≥1990 | |
| Fracture toughness | Mpa m1/2 | 3-4 | 4-5 | 4-5 | 6.5-8 | 3.2 |
| Thermal Expansion Coefficient(20-800℃) | 1×10 -6 /℃ | 5.0~8.0 | 6.2~8.0 | 6.5~8.0 | 8.0~9.5 | 8.8 |
| Thermal conductivity | W/m.k (25℃) | ≥220 | ≥200 | ≥250 | ≥300 | ≥330 |
| Max. service temperature | ℃ | 1500 | 1600 | 1675 | 1000 | 1000 |
| Insulation strength | KV/mm | 18 | 18 | 19 | 17 | 3.93 |
| Dielectric constant (1Mhz) | (E) | 9.5 | 9.5 | 9.7 | 29 | 85 |