1. Low thermal conductivity, less than 3 W/m.k at room temperature
2. Chemical inertness, not interact with almost all strong acid and alkali
3. Higher density than most of technical ceramics, over than 6 g/cm3
4. High hardness, over than 1300 MPa for Vicker
5. Can withstand higher temperatures up to 2400°
6. Exceptional fracture toughness reaches up to 8 Mpa m1/2
7. Resistance to molten metals due to an extraordinary melting point
8. Good Wear resistance, over 276 times than stainless steel
We have been making a great many ceramic rods/bars, including zirconia(ZrO2), alumina(Al2O3), silica carbide (SiO2) and so on. There are a selection of over 100 different specifications in different diameters
Zirconia ceramic rods/bars have the advantages of super hardness, high wear-resisting, high-temperature tolerance, good corrosion resistance, very low friction coefficient, high strength, high mechanical strength, good chemical stability, polishing surface and so on. All these ceramic components can offer high dimensional accuracy, mirror surface, and stringent straightness via fine grinding and diamond polishing.
We have been supplying with many selections of regular diameters with custom lengths, also we are capable of producing various of special shapes, customized diameters in specific materials.
Zirconia ceramic rod/bar is used in the shaft, plunger, automobile Industrial, sealing structure, oil drilling equipment, Insulation parts in electrical equipment, electronic engineering, industrial machinery, and ceramic hair clipper spare parts, with high density, bending strength and breaking tenacity.
We produce various zirconia ceramic rods in different configurations with special design, like square bar, oval rod and so on.
Datasheet of Technical ceramics
Property | Units | Material | ||||
99.5% alumina | 99%alumina | 95% alumina | ZrO2 (Y-TZP) | ZrO2 (TTZ) | ||
Density | g/cm3 | ≥3.85 | ≥3.80 | ≥3.60 | ≥5.95 | ≥5.72 |
Water absorption | % | 0 | 0 | 0 | 0 | 0 |
Hardness | HV | 1700 | 1700 | 1500 | 1300 | 900 |
Flexural strength | Mpa | ≥379 | ≥338 | ≥320 | ≥1200 | ≥1200 |
Compressive strength | Mpa | ≥2240 | ≥2240 | ≥2000 | ≥1990 | 1750 |
Fracture toughness | Mpa m1/2 | 4-5 | 4-5 | 3-4 | 6.5-8 | 11 |
Max. service temperature | ℃ | 1675 | 1600 | 1450 | 1000 | |
CTE | 1×10 -6 /℃ | 6.5~8.0 | 6.2~8.0 | 5.0~8.0 | 8.0~9.5 | 10.2 |
Thermal shock | T(℃) | ≥250 | ≥200 | ≥220 | ≥300 | 350 |
Thermal conductivity(25℃) | W/m.k | 30 | 29 | 24 | 3 | 3 |
Volume resistivity | ohm.cm | |||||
25℃ | >1 x 10 14 | >1 x 10 14 | >1 x 10 14 | >1 x 10 11 | >1 x 10 11 | |
300℃ | 1 x 10 12 | 8 x 10 11 | 10 12 -10 13 | 1 x 10 10 | 1 x 10 10 | |
500℃ | 5 x 10 10 | 2 x 10 9 | 1 x 10 9 | 1 x 10 6 | 1 x 10 6 | |
Insulation strength | KV/mm | 19 | 18 | 18 | 17 | 20 |
Dielectric constant(1Mhz) | (E) | 9.7 | 9.5 | 9.5 | 29 | 28 |
We have in-housing comprehensive manufacturing types of equipment, including forming, sintering, CNC machining,
precision grinding, laser cutting and so on, it helps us to control the quality very well, also it greatly benefits cost control.
1. We will keep the ceramic parts inside the inner package to be fixed without moving, then it will prevent them from collision each other,
to avoid any cause any chippings during transportation.
2. In addition, the inside of the outer carton will be filled with sufficient protective kinds of stuff.