Aluminium Oxide (Alumina) 99.5% vs Zirconium Oxide (Zirconia) Y-TZP: 0% composition overlap. Significantly different materials serving different application areas.
Aluminium Oxide (Alumina) 99.5% vs Zirconium Oxide (Zirconia) Y-TZP
Side-by-side chemical composition and mechanical property comparison.
Overview
Aluminium Oxide (Alumina) 99.5%
The most widely used engineering ceramic. Alpha-phase alumina (99.5% Al2O3) offers exceptional hardness (1440 HV), excellent dielectric properties, high compressive strength (2600 MPa), good thermal conductivity (35 W/m·K), and outstanding chemical resistance. Usable to 1750°C. Applications include wear pads, seal rings, substrates, thread guides, grinding media, furnace tubes, ballistic armor, and high-voltage insulators. Available in purities from 94% to 99.8%.
Zirconium Oxide (Zirconia) Y-TZP
Yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP). The toughest engineering ceramic with transformation toughening mechanism. Exceptional flexural strength (900–1200 MPa), high fracture toughness (5–10 MPa·m½), density 6.05 g/cm³, elastic modulus ~200 GPa. Low thermal conductivity (2–3 W/m·K) makes it a good thermal insulator. Applications: precision bearings, cutting blades, dental implants, fuel cell components, wear-resistant parts, thread guides.
| Aluminium Oxide (Alumina) 99.5% | Zirconium Oxide (Zirconia) Y-TZP | |
|---|---|---|
| Material Number | — | — |
| Category | ceramic | ceramic |
| Standard | — | — |
Chemical composition (wt%)
| Element | Aluminium Oxide (Alumina) 99.5% | Zirconium Oxide (Zirconia) Y-TZP | Overlap |
|---|---|---|---|
| Al2O3 | ≥ 99.5% | ≤ 0.25% | No overlap |
| SiO2 | ≤ 0.2% | — | — |
| MgO | ≤ 0.1% | — | — |
| Na2O | ≤ 0.1% | — | — |
Mechanical properties
| Property | Aluminium Oxide (Alumina) 99.5% | Zirconium Oxide (Zirconia) Y-TZP | Unit |
|---|---|---|---|
| density | ≥ 3.89 | 6–6.05 | g/cm3 |
| flexural_strength | ≥ 379 | 900–1200 | MPa |
| compressive_strength | ≥ 2600 | ≥ 2000 | MPa |
Compatibility Assessment
Aluminium Oxide (Alumina) 99.5% and Zirconium Oxide (Zirconia) Y-TZP have significantly different compositions (0% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is Aluminium Oxide (Alumina) 99.5% the same as Zirconium Oxide (Zirconia) Y-TZP?
Aluminium Oxide (Alumina) 99.5% and Zirconium Oxide (Zirconia) Y-TZP have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace Aluminium Oxide (Alumina) 99.5% with Zirconium Oxide (Zirconia) Y-TZP?
Generally not recommended. The compositions differ significantly (0% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between Aluminium Oxide (Alumina) 99.5% and Zirconium Oxide (Zirconia) Y-TZP?
The main differences are in the following elements: Al2O3. Aluminium Oxide (Alumina) 99.5% is a ceramic grade, while Zirconium Oxide (Zirconia) Y-TZP is a ceramic grade.
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Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.