Custom Tighten Tolerance 99.5% Al2O3 Alumina Ceramic Body for
Industrial
Specification of the ceramic body:
| Material options | 95~99.8% alumina(Al2O3), Zirconia (ZrO2), Silicon carbide (SiC),
Silicon nitride (Si3N4) |
| Forming methods | Dry pressed, Ceramic injection molding, ISO pressed and Hot
pressed, Extrusion |
| Typical types | Ceramic tube, ceramic ring, ceramic rod, ceramic housing, ceramic
cap, ceramic frame |
| Specification | Available outer from 1mm to 500mm, available length from 10mm to
1000mm |
| Tolerance | Dimensions less than 100mm with 0.005mm, greater than 100mm with
0.01mm |
| Surface treatment | Polishing to be diamond-like surface, glazing, metallizing for
ceramic to metal bonding |
Prime features of the ceramic body :
1. Wear & abrasion resistance: Alumina is extreme hard technical
ceramic with superb wear resistance
2. High-temperature ability: withstand up to 1650°C in oxidizing
and reducing atmospheres
3. Chemical inertness, resistant most of the strong acid and
alkali, and does not rust forever
4. Electrical insulation: The insulation breakdown is up to 18KV at
least
5. Great mechanical properties, hardness, compressive and flexural
strength are much higher stainless steel
6. Chemical corrosion resistance under high temperature, even if
with strong acid or alkali
7. Protective atmospheres or high vacuum at high-temperature to
eliminate contamination or impurity.
8. Low material cost in high-level applications than other
technical ceramics
Description of high precision alumina ceramic body:
As the sintering process will cause around 13% to 20% shrinkage for
alumina ceramic parts, that means there is around 13% to 20% change
in dimensions between green alumina ceramic body and sintered ones.
In order to achieve precision fitting in the specific application,
sometimes, fired alumina ceramic parts need to be machined to reach
high accuracy size and tight tolerance by diamond tools. Our facility offers a selection of precision process, including
fine grinding, lapping, CNC machining, laser cutting and so on.
We offer a selection of purities ranging from 95 – 99.8%. Our
factory has access to many different types of shaping methods,
including dry pressing, hot pressing, ceramic injection molding,
ISO pressing, tape casting, and extruded.
Alumina ceramic is characterized by high hardness, wear resistance,
low erosion levels, high-temperature resistance, corrosion
resistance, and chemical stability. Furthermore, it can be highly
polished making it a mirror surface to reduce friction at the
fitting, working status. So alumina ceramic parts are extensively
used in medical, electronic, electrical, machinery, chemistry, new
energy, military, aerospace and so on.
The application of alumina ceramic parts:
Due to high purity alumina versatile characteristics, high
precision alumina ceramic parts are widely used as ceramic mechanical seals, ceramic semiconductor parts, ceramic
machine components, electrical ceramic insulators, ceramic
waveguides, ceramic measuring components, fiber optical
application.
Gallery of alumina ceramic parts
We produce various different grade alumina ceramic parts with
complicated design.
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 |
Manufacturing flow chart of technical ceramic parts
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.
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 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.
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.
