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YSZ Yttria Stabilized Zirconia

Yttria (3 mol%) Stabilized Zirconia

Partially stabilized Zirconia(PSZ) is a mixture of zirconia polymorphs, because insufficient cubic phase-forming oxide (Stabilizer) has been added and a cubic plus metastable tetragonal ZrO2 mixture is obtained. The most common and widely used PSZ is 3 mol% of Yttria stabilized Zirconia. It contains 3 mol% Yttria (Y2O3), it’s 5.2 ± 0.2 % in weight.

Item Name: Yttria (3 mol%) Stabilized Zirconia
CAS Number: 1314-23-4
Molecular Formula: ZrO2 + Y2O3, YSZ
Purity: 99.9%
Package: 25kg/bag, 50kg/drum

Yttria (3 mol%) Stabilized Zirconia powder (YSZ powder)

Purity Other Properties
Zr(Hf)O2: 94.5%; Y2O3: 5.2 ± 0.2 % D50 = 0.5-0.8 µm; Specific Surface Area ~ 15 m2/gm
Zr(Hf)O2: 94.5%; Y2O3: 5.2 ± 0.2 % D50 < 1.0 µm; Specific Surface Area 7~9 m 2/gm

Yttria (3 mol%) Stabilized Zirconia Part

Product Name Product Name
Zirconia Mortar & Pestle Zirconia Plate
Zirconia Crucible Zirconia Cutting Blade
Zirconia Tube Zirconia Plunger
Zirconia Pot/Jar Zirconia Ring
Zirconia Rod Zirconia Ball Valve

Specification of Yttria (3 mol%) Stabilized Zirconia

Composition wt% 94.5%ZrO2, 5.2 ± 0.2 %Y2O3
Specific density g/cm3 ≥5.95
Hardness(HV) GPa >12
Thermal expansion coefficient(20~400℃) X10-6/k 11
Elastic modulus GPa 205
Fracture toughness MPa·m1/2 >9
Bending strength MPa >1150
Grain size μm <0.5
Thermal conductivity w/(m·k) 3
Features of Yttria (3 mol%) Stabilized Zirconia (YSZ Product) Applications of Yttria (3 mol%) Stabilized Zirconia (YSZ Product)
- Super hardness 
- High density 
- High bending strength and breaking tenacity 
- Low thermal conductivity (20% that of alumina) 
- Good chemical stability 
- Resistance to molten metals 
- High wear-resisting 
- High fracture toughness 
- Good corrosion resistance 
- High temperature tolerance 
- Good insulation 
- High mechanical strength 
- Good polishing surface 
- Precision tolerance
- Insulating rings in thermal processes
- Precision shafts and axles in high wear environments
- Wear resistance pads
- Thermocouple protection tubes
- Sandblasting nozzles
- Refractory material
- Extrusion dies
- Bushings and caps
- Fiber optic ferrules and sleeves
- Knives and blades
- Fuel cell parts
- Bearings & rollers
- Welding nozzles & pins
- Laser parts
- Gas igniters
- Electric insulator
- Ceramic guiders
- Oxygen sensors
- Medical and surgical component
- Mechanical seals

Package of our Yttria Stabilized Zirconia (YSZ):

Double layer plastic bags, 25kg/bag, 50kg/drum, or according to customer’s package requirement for powder. Wooden crate or carton box for zirconia parts.



EdgeTech Industries LLC16518 SW 36th St, Miramar, FL 33027sales@edge-techind.com