Zirconia Ceramic

It has extremely high hardness and strength, and good corrosion resistance

As one of the representative materials of advanced ceramics, zirconium oxide is divided into yttria stabilized zirconia and magnetium stabilized zirconia. Both grades have excellent performance.

Zirconia Advantages

Mohs hardness is 8.5
Possessing ultra-high fracture toughness
Excellent wear resistance
Resistant to chemicals
Able to withstand high temperature environments
With low thermal conductivity
Melting point up to 2715°C

Zirconia Applications

Bearings and plungers
Medical implants
Petrochemical pump sleeves and liners
Optical communication fiber optic V-grooves
Seals
Electric vacuum devices
Oxygen sensors
Spacecraft structural parts
Engine components
Water treatment valves and pump components
Optical windows and mirrors

Material Properties

Mechanical Properties	Unit	Zirconia
Density	g/cm³	6.02
Vickers Hardness	GPa	13
Bending Strength	MPa	900
Compressive Strength	MPa	2400
Elastic Modulus	GPa	210
Toughness	MPa·m¹ᐟ²	7
Poisson’s Ratio	–	0.31
Young’s Modulus	GPa	200

Thermal Properties	Unit	Zirconia
Thermal Conductivity	W/mK	3
Melting Point	°C	2700
Maximum Operating Temperature	°C	1000
Linear Expansion Coefficient	10⁻⁶/K	10

Electrical Properties	Unit	Silicon Carbide
Dielectric Constant (1 MHz)	–	30
Breakdown Voltage	V/cm	1000
Dielectric Loss (1 MHz)	–	< 0.001
Resistivity	Ω·cm	> 10¹²

Note: This value is for reference only and may vary slightly depending on the batch conditions.

Zirconia Ceramic Machining

We have advanced 5-axis machining equipment and years of experience in zirconia ceramic machining. Our zirconia components achieve flatness up to 0.003 mm, surface roughness Ra 0.01 μm, and machining accuracy of 0.001 mm, ensuring superior performance in the most demanding applications.

Whether you need zirconia plates, rods, tubes, or custom-machined parts, we are your trusted partner for high-precision Zirconia Ceramic Machining.

Need custom zirconia components?
Contact us today to speak with our materials experts and create a tailored solution that exceeds your expectations.

Zirconia Ceramic Prototypes Machining

Our latest video documents the process of CNC machining of zirconia ceramics

Frequently Asked Questions

What is zirconia ceramic?

Zirconia (ZrO₂) is an advanced ceramic known for its high fracture toughness, excellent wear resistance, and low thermal conductivity. Stabilized zirconia, such as 3Y-TZP and Y-PSZ, exhibits superior strength and is widely used in structural components and precision parts.

How is zirconia used in medical devices?

Zirconia is widely used in the medical field due to its excellent biocompatibility, corrosion resistance, and enamel-like aesthetics. Typical applications include dental crowns/implants, surgical instrument components, endoscope components, pumps and valves, and wear-resistant liners.

Is zirconia ceramic difficult to machine?

Yes. Zirconia has an extremely high hardness (up to HV 1200–1300), making it difficult to machine in its sintered state. Ultra-precision grinding and diamond tools are required. Jundro Ceramics offers precision machining services with multi-axis CNC machine tools and diamond grinding capabilities, achieving tolerances as low as ±0.001 mm.

Zirconia vs. Alumina — which is more wear-resistant?

Zirconia typically exhibits better wear resistance due to its higher fracture toughness and flexural strength; while alumina excels in high-temperature stability and cost-effectiveness. For dynamic friction, impact, or sealed environments, zirconia is generally the superior choice.

Who are the suppliers of zirconia ceramic?

Common suppliers include manufacturers specializing in technical ceramics. Dongguan Junde Ceramics Co., Ltd. (Dongguan, China) provides ISO 9001/14001 certified manufacturing, precision machining of zirconia (3Y, 5Y, Y-PSZ), custom components, and engineering support for the semiconductor, medical, and automation industries.

What is the maximum size for zirconia ceramic structural parts?

The largest size we can currently provide is 400*800mm.