High Precision Machining Wearable 99.5% Al2O3 Alumina Ceramic Bar for Industrial
Main characteristics of the alumina ceramic bar
1. Great mechanical properties, hardness, compressive and flexural strength are much higher stainless steel
2. High precision dimensional tolerance with diamond polished surface quality
3. Extreme wear and abrasion resistance., over 276 times in comparison with stainless steel
4. Extraordinary electrical insulation, it always us in many high voltage, high-current application
5. Chemical corrosion resistance under high temperature, even if with strong acid or alkali
6. Protective atmospheres or high vacuum at high-temperature to eliminate contamination or impurity.
7. Extreme high-temperature stability under reducing, inert, and high-vacuum conditions under high temperature up to 1800°C.
8. Low material cost in high-level applications than other technical ceramics
Specification and production capability of ceramic bar
| Material | alumina, zirconia, silicon nitride, steatite optional |
| Side-length | 50mm x 50mm |
| Length | 10~ 800mm |
| Flatness | 0.001mm | Parallelism | To be 0.001mm |
| Surface treatment | Polished |
| Cosmetic | Smooth surface without no contamination, deformation, and crack |
Description of alumina ceramic bar
We provide many selections of different raw material ceramic bars, including high purity alumina ceramic bar, zirconia ceramic bar, silicon carbide ceramic bar, silicon nitride ceramic bar and so on.
All these ceramic bars could offer high accuracy dimensions via fine grinding, CNC machining.
Datasheet of technical ceramic materials
| Property | Units | Materials |
| 99.5%Al2O3 | 99%Al2O3 | 95%Al2O3 | ZrO2 | Si3N4 |
| Density | g/cm3 | ≥3.85 | ≥3.80 | ≥3.60 | ≥6.0 | ≥3.2 |
| Water absorption | % | 0 | 0 | 0 | 0 | 0 |
| Hardness | HV | 1700 | 1700 | 1500 | 1300 | 1550 |
| Flexural strength | Mpa | ≥379 | ≥338 | ≥320 | ≥1200 | ≥600 |
| Compressive strength | Mpa | ≥2240 | ≥2240 | ≥2000 | ≥1990 | ≥2500 |
| Fracture toughness | Mpa m1/2 | 4-5 | 4-5 | 3-4 | 6.5-8 | 6 |
| Max. service temperature (Non-loading) | ℃ | 1675 | 1600 | 1500 | 1000 | 1200 |
| CTE (20-800℃) | 1×10 -6 /℃ | 6.5~8.0 | 6.2~8.0 | 5.0~8.0 | 8.0~9.5 | 3.1 |
| Thermal shock | T(℃) | ≥250 | ≥200 | ≥220 | ≥300 | ≤1000 |
| Thermal conductivity(25℃) | W/m.k | 30 | 29 | 24 | 3 | 15~20 |
| Volume resistivity (25℃ ) | ohm.cm | ＞1 x 10 14 | ＞1 x 10 14 | ＞1 x 10 14 | ＞1 x 10 11 | ＞1 x 10 12 |
| Insulation strength | KV/mm | 19 | 18 | 18 | 17 | |
| Dielectric constant(1Mhz) | (E) | 9.7 | 9.5 | 9.5 | 29 | |
Packaging proposal and transportation solutions
1. We will keep the ceramic parts inside the inner package to be fixed without moving, then it will prevent them from collsion 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.
Why choose us?
★ 10+ Years of manufacturing experience in OEM, ODM ★ Powerful R&D, mass production capability
★ In-house comprehensive manufacturing types of equipment ★ Rigorous quality control system and processes
★ Surpassing pre-sales and after-sales service ★ Abide all orders as the first priority
FAQs (Frequently Asked Questions)
Q1. Are you a factory or trading company?
A: We are a manufacturer. You are welcome to visit our factory.
Q2: Do you send a sample to check?
A: Sure, the sample is free and freight collect.
Q3: When will you ship it?
A: If the products are in storage, we'll ship within 48 hours
Q4: When can I get the price?
A: We regularly quote within 24 hours after we get your inquiry. If you are in urgent need of getting the price.
Please call us or tell us in your email so that we will proceed with your inquiry as a priority.
Q5: Is it available to provide customized products?
A: We always support custom-made demand as per different materials, dimensions, and designs.
Q6: How to ensure quality?
A: The dimension out of any batch will be carried out sampling inspection per international AQL standard. A 100% cosmetic inspection will be done.
Q7: What other products are you dealing with?
A: We focus on a variety of ceramic tubes, ceramic substrates, ceramic sheets, textile ceramics besides metalized ceramics.
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Machining Wearable Ceramic Bar High Precision Diamond Polished Surface Images
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