Custom Shapes Wear Resistant 99 Alumina Ceramic Parts

﹡Product Overview

Our 99% pure alumina (Al₂O₃) ceramic parts are precision-engineered for extreme wear resistance, high temperature stability, and chemical inertness. Custom geometries and complex shapes available for OEM applications with tight tolerances.

﹡Key Technical Specifications

✅ Material Composition: 99% Alumina – <0.1% impurities

✅ Density: 3.9 g/cm³ – Fully dense structure

✅ Hardness: 1,500 HV (Mohs 9) – 3× harder than tool steel

✅ Flexural Strength: 350-400 MPa

✅ Thermal Stability: 1,600°C continuous service

✅ Thermal Shock Resistance: ΔT >500°C

✅ Surface Finish Options:

As-fired: Ra 0.5-0.8µm

Precision ground: Ra 0.2µm (±0.02µm)

Mirror polished: Ra <0.05µm

✅ Standard Tolerances: ±0.01mm (critical dimensions)

﹡Industry-Specific Applications

1. Mining & Mineral Processing

Slurry pump liners – Withstand 30% solid content abrasion

Classifier wheels – 10× lifespan vs. tungsten carbide

2. Semiconductor Manufacturing

Plasma etch components – Non-contaminating, RF-transparent

Wafer handling arms – Particle-free operation

3. Chemical Processing

Valve seats & seals – Resistant to 50% H₂SO₄, 30% NaOH

Reactor internals – Zero corrosion in HCl environments

4. Mechanical Engineering

Precision guides & bearings – Maintenance-free operation

Textile machine components – Fiber abrasion resistance

5. Food & Pharmaceutical

GMP-compliant wear parts – FDA/EC1935 certified

Sterilizable processing components – ISO 6474 compliant

﹡Competitive Advantages

✔ Industry-Leading Wear Resistance – 0.1mm/year wear rate in abrasive slurries

✔ Zero Maintenance – Eliminates lubrication requirements

✔ Rapid Prototyping – 10-15 day lead time for samples

✔ Cost Efficiency – 5-8 year service life in harsh conditions

﹡Production process

1. Grind and crush the raw materials to be slurry or powder

2. se-different method to making the slurry or powder into semi-finished products

3. Put the semi-finished products into the kiln for dewaxing and sintering;

4. After forming and sintering, Ceramic Sleeves products can also be processed by subsequent CNC precision machining according to the drawing requirements. Then Q/C test.

5. Finally package Ceramic Sleeves by bubble paper or cartons and place it on tray for delivery

﹡Certifications

﹡Company

Yixing Shengda Refractory Ceramic Co, Ltd. was established in Yixing City, China in 1995, witha production area of over 10,000m2. lt is an enterprise specializing in the production of aluminaceramic,zirconia ceramic,slicon nitride, silicon carbide and other precision ceramic products. 

And we also produce ceramic band heaters, ceramic terminal block, cordierite and mullite ceramic parts an other ceramic products.

﹡Ceramic Properties