Ce-TZP 12CE
Grade · default condition
12CE = 12Ce-TZP
Standard commercial Ce-TZP: best balance of ~550 MPa strength and 10–14 MPa·√m toughness with good phase stability.
Values for the 12CE condition
Other Ce-TZP tempers and conditions
Ce-TZP is listed in 4 conditions; see the grade overview at Ce-TZP.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
10Ce-TZP | Pick when peak fracture toughness / damage tolerance matters more than strength or hardness; more transformable, so watch stability near room temperature. | — | 280 | 0.2 | 950 HV | 2 W/m·K |
Hot isostatic pressed | Choose for the highest strength and finest surface finish in Ce-TZP (wire-drawing dies, precision wear parts) where porosity-initiated failure must be eliminated. | — | 430 | 0.2 | 1,130 HV | 3 W/m·K |
12CEDefaultThis page 12Ce-TZP | Standard commercial Ce-TZP: best balance of ~550 MPa strength and 10–14 MPa·√m toughness with good phase stability. | — | — | — | 1,030 HV | 3 W/m·K |
Ce-TZP/Al2O3 nanocomposite | Alumina-dispersed Ce-TZP: restores hardness and doubles strength while keeping very high toughness — the grade used for hip joint heads and heavily loaded tooling. | — | — | — | 1,200 HV | 6 W/m·K |
What is Ce-TZP 12CE?
Ce-TZP 12CE is Ce-TZP in the 12CE grade — standard commercial Ce-TZP: best balance of ~550 MPa strength and 10–14 MPa·√m toughness with good phase stability. Ce-TZP 12CE has a tensile strength of 330 MPa (47.9 ksi), stronger than 68% of ceramic grades. The elastic modulus is 205 GPa (29.7 Msi). Ce-TZP 12CE has a density of 6.2 g/cm³ (0.224 lb/in³), heavier than 68% of ceramic grades. It melts at 2,650°C (4,802 °F).
Advantages
- Tough — resists crack growth — 12 MPa·√m (10.9 ksi·√in), better than 93% of ceramic grades
- Good corrosion resistance — 92/100, better than 88% of ceramic grades
Limitations
- Poor heat conductor — 2.5 W/m·K (1.44 BTU/hr·ft·°F), worse than 83% of ceramic grades
Ce-TZP 12CE properties
Typical room-temperature values for Ce-TZP 12CE; 10 are specific to this condition. Other listed values are Ce-TZP reference data and may not represent this condition. Bars are the position among ceramic grades.
Physical4
Ce-TZP 12CE has a density of 6.2 g/cm³ (0.224 lb/in³), heavier than 68% of ceramic grades. It melts at 2,650°C (4,802 °F).
Mechanical11
Ce-TZP 12CE has a tensile strength of 330 MPa (47.9 ksi), stronger than 68% of ceramic grades. The elastic modulus is 205 GPa (29.7 Msi).
Thermal5
Ce-TZP 12CE is rated for continuous service to 1,000°C (1,832 °F). It conducts heat at 2.5 W/m·K (1.44 BTU/hr·ft·°F), worse than 83% of ceramic grades. Thermal expansion is 10.5 µm/m·K (5.83 µin/in·°F).
Electrical5
Ce-TZP 12CE is an electrical insulator with a dielectric strength of 12 kV/mm (304.8 V/mil) and a resistivity of 1×10⁸ Ω·m.
Chemical & Environmental2
Corrosion resistance is excellent (92/100), better than 88% of ceramic grades.
Sustainability4
Producing a kilogram of Ce-TZP 12CE takes about 110 MJ of energy and emits 7.5 kg of CO₂ — less than 52% of ceramic grades. Typical recycled content is 0%.
Manufacturability3
Ce-TZP 12CE's machinability is not recommended (4/100, worse than 85% of ceramic grades).
Common Calculations4
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Ce-TZP 12CE
Is Ce-TZP easy to machine?
Green/bisque machine wherever possible; after sintering only diamond grinding, lapping or laser/ultrasonic machining — but Ce-TZP tolerates grinding far better than Y-TZP thanks to its high toughness.
Can Ce-TZP be welded?
Not weldable; join by active-metal brazing (Ti-containing AgCu), glass sealing or mechanical/shrink fits, allowing for the ~10.5 µm/m·K CTE mismatch with steels.
Can Ce-TZP be formed, bent or molded?
Formed by uniaxial/CIP pressing, slip or injection molding of granulate, then sintering at 1450–1550 °C in air; avoid reducing atmospheres and vacuum sintering, which reduce ceria and darken/destabilize the body.
What surface finishes work on Ce-TZP?
Diamond lapping and polishing to Ra <0.05 µm; grinding-induced compressive surface stress from t→m transformation actually raises strength, and no LTD annealing is needed as with Y-TZP.
Ce-TZP chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| CeO2≈10–12 mol% CeO2 expressed in wt% | 13 – 17 | 16 |
| Al2O3sintering aid in monolithic grades; 20–30 vol% in Ce-TZP/A composite | 0 – 0.5 | 0.25 |
| HfO2naturally present with zirconia | 1 – 2.5 | 1.8 |
| SiO2impurity | 0 – 0.1 | 0.02 |
| Fe2O3impurity | 0 – 0.05 | 0.01 |
| Na2Oimpurity | 0 – 0.05 | 0.01 |
| ZrO2balance, tetragonal phase | balance | — |
Ce-TZP 12CE — frequently asked
What is Ce-TZP 12CE used for?
Ce-TZP 12CE is typically used for biomedical implants, impact-resistant components and layered ZTA/Ce-TZP composites. In short: highest-toughness zirconia; no hydrothermal ageing; damage-tolerant Y-TZP substitute.
What is the tensile strength of Ce-TZP 12CE?
Ce-TZP 12CE has a typical tensile strength of 330 MPa (47.9 ksi) — stronger than 68% of ceramic grades. Strength varies by condition: see the 4 listed tempers.
Is Ce-TZP 12CE easy to machine?
Not especially — machinability is rated not recommended (4/100, worse than 85% of ceramic grades). Green/bisque machine wherever possible; after sintering only diamond grinding, lapping or laser/ultrasonic machining — but Ce-TZP tolerates grinding far better than Y-TZP thanks to its high toughness.
Can Ce-TZP 12CE be welded?
Not weldable; join by active-metal brazing (Ti-containing AgCu), glass sealing or mechanical/shrink fits, allowing for the ~10.5 µm/m·K CTE mismatch with steels.
What surface finishes work on Ce-TZP 12CE?
Diamond lapping and polishing to Ra <0.05 µm; grinding-induced compressive surface stress from t→m transformation actually raises strength, and no LTD annealing is needed as with Y-TZP.
Can Ce-TZP 12CE be formed, bent or molded?
Formed by uniaxial/CIP pressing, slip or injection molding of granulate, then sintering at 1450–1550 °C in air; avoid reducing atmospheres and vacuum sintering, which reduce ceria and darken/destabilize the body.
What is the maximum service temperature of Ce-TZP 12CE?
Ce-TZP 12CE is rated for continuous use to about 1,000°C (1,832 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- CEZ series ceria-stabilized zirconia powder data — Tosoh (2022)
- ASM Engineered Materials Handbook Vol.4: Ceramics and Glasses — ASM International (1991)
- Transformation toughening in Ce-TZP and Ce-TZP/Al2O3 composites (review chapters) — Journal of the American Ceramic Society / Elsevier (2010)
- Zirconia ceramic material properties (TZP grades) — CoorsTek / Kyocera (2023)
- ISO 13356 — Implants for surgery: ceramic materials based on yttria-stabilized tetragonal zirconia (reference for TZP test methods) — ISO (2015)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.