Examples of Ceramic Materials: 20 Types With Real Uses
Updated: Aug 21
Written by: Gulzar Hussain & Reviewed by Mark Ma Estimated Reading Time: 15 minutes
Quick Answer: 20 Ceramic Materials
# | Material | Category | Used for |
1 | Alumina (Al₂O₃) | Advanced oxide | Spark plug insulators, substrates, wear plates, chamber parts |
2 | Zirconia (ZrO₂) | Advanced oxide | Dental crowns, valve components, oxygen sensors, cutting blades |
3 | Silicon carbide (SiC) | Advanced non-oxide | Abrasives, kiln furniture, seal faces, power semiconductors |
4 | Silicon nitride (Si₃N₄) | Advanced non-oxide | Bearings, glow plugs, turbocharger rotors, molten metal handling |
5 | Aluminium nitride (AlN) | Advanced non-oxide | Power electronics substrates, heat spreaders |
6 | Boron carbide (B₄C) | Advanced non-oxide | Body armour, blast nozzles, neutron absorbers |
7 | Boron nitride (BN) | Advanced non-oxide | Crucibles, release coatings, machinable insulators |
8 | Tungsten carbide (WC) | Cermet/carbide | Cutting tools, dies, wear parts |
9 | Magnesia (MgO) | Refractory oxide | Furnace linings, steelmaking refractories |
10 | Porcelain | Traditional | Tableware, electrical insulators, sanitary ware |
11 | Earthenware | Traditional | Pottery, tiles, decorative ware |
12 | Stoneware | Traditional | Cookware, floor tile, chemical stoneware |
13 | Fired brick | Traditional | Construction |
14 | Cordierite | Technical/traditional | Catalytic converter substrates, kiln shelves |
15 | Steatite | Technical | Low-cost electrical insulators |
16 | Soda-lime glass | Glass | Windows, containers |
17 | Fused silica | Glass | Optics, semiconductor process ware, crucibles |
18 | Lithium-aluminosilicate glass-ceramic | Glass-ceramic | Cooktops, telescope mirror blanks |
19 | Barium titanate (BaTiO₃) | Functional | Multilayer ceramic capacitors |
20 | Lead zirconate titanate (PZT) | Functional | Piezoelectric sensors, actuators, sonar, fuel injectors |
The rest of this page explains what each one is actually good at — and, where it matters, what it is not.
Traditional Ceramics
Clay-based, silicate-bonded, fired below about 1,400 °C, produced in enormous volume at very low cost. Flexural strength 50–100 MPa, porosity 10–20%.
Fired brick. Clay and shale, fired to partial vitrification. The oldest continuously manufactured engineered material.
Earthenware. Porous, fired at 1,000–1,150 °C, glazed for water resistance. Terracotta, decorative pottery, wall tile.
Stoneware. Fired 1,200–1,300 °C to near-vitrification. Non-porous without glaze, considerably stronger than earthenware. Cookware, floor tile, and chemical stoneware for corrosive service.
Porcelain. Kaolin, feldspar, and quartz fired 1,300–1,400 °C. Dense, vitrified, translucent in thin section. Tableware and — more importantly by tonnage — high-voltage electrical insulators, where its dielectric strength and weather resistance are still competitive with modern alternatives.
Sanitary ware and wall tile. Vitreous china and porcelain bodies, chosen for hygiene, water resistance and cost rather than strength.
Advanced Oxide Ceramics
Alumina (Al₂O₃) — the most widely used technical ceramic by a wide margin. Supplied at 85% to 99.99% purity, and purity changes the material: higher purity means less glassy grain-boundary phase, which raises strength, thermal conductivity, dielectric strength and plasma resistance. Density 3.9 g/cm³, hardness 1,400–1,600 HV at 99.5%, usable to 1,700 °C.
Used in spark plug insulators (one of the highest-volume technical ceramic applications in existence), electronic substrates, semiconductor chamber components, wear plates, seal faces, furnace tubes and orthopaedic bearing surfaces. If a technical ceramic application does not have a specific reason to use something else, it uses alumina. Alumina components →
Zirconia (ZrO₂) — the toughest oxide ceramic available, at 900–1,200 MPa flexural strength and 8–10 MPa·m^0.5 fracture toughness. Always stabilised with yttria, magnesia or ceria, because pure zirconia's phase transformation destroys the part on cooling.
Used in dental crowns and implant abutments, valve plugs and seats, oxygen sensors, fuel cell electrolytes, cutting blades, and precision fixtures. Limited to about 1,000 °C, and susceptible to surface degradation in humid service between 150–400 °C. Zirconia components →
Zirconia-toughened alumina (ZTA) — fine zirconia particles dispersed through an alumina matrix. Delivers 500–600 MPa flexural strength and 5–6 MPa·m^0.5 toughness at closer to alumina's price. Wear plates, cutting tools, biomedical bearings.
Magnesia (MgO) — rock-salt structure, melting at 2,852 °C. Almost entirely a refractory: steelmaking linings, crucibles, and the insulating filler in mineral-insulated heating cable.
Titania (TiO₂) and spinel (MgAl₂O₄) — the former in dielectric and pigment applications, the latter as a transparent ceramic for armour and infrared windows.
Advanced Non-Oxide Ceramics
Silicon carbide (SiC) — 2,400–2,800 HV, 120–150 W/m·K, thermal expansion 4.0 ×10⁻⁶/K, usable to 1,600 °C. Chemically inert to almost everything.
The abrasive that made the category: SiC has been ground into things since 1893. Modern uses run from kiln furniture and mechanical seal faces to armour plate and, most significantly, power semiconductors — SiC devices are now standard in EV traction inverters. Not an electrical insulator. SiC components →
Silicon nitride (Si₃N₄) — 700–900 MPa flexural, 6–7 MPa·m^0.5 toughness, and the lowest thermal expansion of the common technical ceramics at 3.2 ×10⁻⁶/K. Its interlocking needle-like β-grain microstructure resists cracking, and unlike zirconia's toughening mechanism it does not fade with temperature.
The standard answer for thermal shock: hybrid bearing balls, diesel glow plugs, turbocharger rotors, molten aluminium handling, and increasingly power electronics substrates where the substrate is also structural. Si₃N₄ components →
Aluminium nitride (AlN) — 170–200 W/m·K thermal conductivity with volume resistivity above 10¹⁴ Ω·cm, and thermal expansion of 4.5 ×10⁻⁶/K that closely matches silicon. It exists to move heat out of electronics without letting current follow. Not a structural material — 300–350 MPa flexural, 2.6 MPa·m^0.5 toughness — and it oxidises above about 900 °C. AlN components →
Boron carbide (B₄C) — third-hardest known material at 2,900–3,300 HV, and the lightest ceramic here at 2.52 g/cm³. That combination is why it is in body armour and blast nozzles. It is also fragile at 2.9–3.7 MPa·m^0.5, oxidises above 800 °C, and is expensive to densify and machine. Boron's high neutron capture cross-section adds a second use: control rods and neutron shielding. B₄C components →
Boron nitride (BN) — hexagonal BN is the odd one out: soft, machinable with conventional tooling, lubricious like graphite, and an excellent dielectric at 35–40 kV/mm. Used for crucibles, release coatings, break rings and machinable insulators. The cubic form (cBN) is the opposite — second only to diamond in hardness, and used as a superabrasive.
Tungsten carbide (WC) — usually cobalt-bonded, making it strictly a cermet rather than a pure ceramic. 1,800–2,200 HV, very dense at 14.9–15.6 g/cm³. Cutting tool inserts, drawing dies, wear parts, mining tooling.
Glass and Glass-Ceramics
Soda-lime glass — 74% silica with soda and lime as fluxes. Windows, bottles, containers. Around 90% of all glass produced.
Borosilicate glass — boron oxide lowers thermal expansion to about 3.3 ×10⁻⁶/K, giving thermal shock resistance. Laboratory glassware, cookware.
Fused silica — pure SiO₂, expansion of just 0.55 ×10⁻⁶/K, exceptional UV transmission and chemical purity. Semiconductor process ware, precision optics, crucibles for silicon crystal growth.
Lithium-aluminosilicate glass-ceramics — formed as glass, then heat-treated to precipitate crystals with negative thermal expansion that offset the glass phase's positive expansion, yielding near-zero net expansion. Induction cooktops and telescope mirror blanks.
Machinable glass-ceramic (Macor) — fluorophlogopite mica crystals in a borosilicate matrix. Machinable with ordinary carbide tooling to tight tolerances with no post-fire firing, which makes it invaluable for prototypes and one-offs. Limited to 800 °C and only 94 MPa flexural strength. Macor vs alumina →
Functional and Electronic Ceramics
Barium titanate (BaTiO₃) — perovskite structure with very high dielectric permittivity. The dielectric in multilayer ceramic capacitors, which are produced in higher unit volumes than every other advanced ceramic combined.
Lead zirconate titanate (PZT) — the dominant piezoelectric ceramic. Converts mechanical stress to charge and back. Ultrasonic transducers, sonar, precision actuators, diesel fuel injectors, ultrasound imaging.
Yttria-stabilised zirconia (YSZ) as an ionic conductor — above ~300 °C, the oxygen vacancies created by yttria doping let oxygen ions move through the lattice. This is what makes solid oxide fuel cells and automotive lambda sensors work.
Ferrites — iron oxide compounds with magnetic behaviour and high electrical resistivity, which suppresses eddy current losses. Transformer cores, inductors, EMI suppression beads.
Cuprate superconductors — YBCO and related compounds, superconducting above liquid nitrogen temperature. MRI magnets, research magnets, fault current limiters.
Refractory Ceramics
Designed to hold structure above 1,500 °C, usually with deliberately coarse grain and moderate porosity — porosity lowers thermal conductivity and improves thermal shock tolerance at the cost of strength these applications do not need.
Fireclay refractories — alumina-silica, the workhorse of general furnace lining. High-alumina refractories — 50–99% Al₂O₃ for more severe duty. Magnesia and dolomite — basic refractories for steelmaking, chemically compatible with basic slags. Silicon carbide refractories — kiln furniture and crucibles, chosen for thermal conductivity and shock resistance. Zirconia refractories — glass tank components and very high-temperature insulation. Cordierite — very low thermal expansion, in kiln shelves and catalytic converter substrates.
Bioceramics
Alumina — the first ceramic used in load-bearing orthopaedic implants; femoral heads and acetabular liners under ISO 6474.
Zirconia — dental crowns, implant abutments, and orthopaedic bearing surfaces under ISO 13356. Toughness and tooth-like translucency made it standard in restorative dentistry.
Hydroxyapatite — chemically similar to the mineral phase of bone. Bioactive rather than inert: bone bonds to it directly. Used as a coating on metal implants and as a bone graft substitute.
Bioglass — a silicate glass that forms a hydroxyapatite layer in body fluid and bonds to bone. Bone regeneration and dental applications.
Everyday Objects That Are Ceramic
Worth listing, because the category is broader than most people assume:
Bathroom tile · toilets and basins · dinner plates and mugs · the white insulator on a spark plug · window glass · the cooktop on an induction hob · a knife with a white blade · the substrate inside a catalytic converter · brake discs on high-performance cars · the scratch-resistant back of a phone · watch bezels · dental crowns · abrasive paper and grinding wheels · the ferrite bead on a laptop charger cable · the capacitors on every circuit board you own.
Property Comparison of the Main Examples
Typical values for standard grades.
Material | Density (g/cm³) | Hardness (HV) | Flexural strength (MPa) | Max temp, air (°C) | Thermal conductivity (W/m·K) |
Alumina 99.5% | 3.90 | 1,400–1,600 | 380 | 1,700 | 30 |
Zirconia 3Y-TZP | 6.05 | 1,200–1,300 | 900–1,200 | 1,000 | 2–3 |
ZTA | 4.10–4.30 | 1,400–1,500 | 500–600 | 1,500 | 20–25 |
Silicon carbide | 3.10–3.15 | 2,400–2,800 | 400–450 | 1,600 | 120–150 |
Silicon nitride | 3.20–3.25 | 1,400–1,600 | 700–900 | 1,200 | 25–30 |
Aluminium nitride | 3.26 | 1,100–1,200 | 300–350 | 900 | 170–200 |
Boron carbide | 2.52 | 2,900–3,300 | 350–400 | 800 | 30–40 |
Boron nitride (h) | 1.90–2.10 | ~50 | 50–100 | 900 (air) | 25–60 |
Tungsten carbide | 14.9–15.6 | 1,800–2,200 | 1,500–2,500 | 500 (air) | 80–100 |
Fused silica | 2.20 | ~600 | 50–70 | 1,100 | 1.4 |
Macor | 2.52 | ~250 | 94 | 800 | 1.5 |
Porcelain | 2.30–2.50 | ~700 | 50–100 | 1,000 | 1.5 |
Full selection guidance: technical ceramic comparison chart →
Frequently Asked Questions
What are the most common examples of ceramic materials? By volume: brick, tile, porcelain, glass and cement-related materials. By technical importance: alumina, zirconia, silicon carbide, silicon nitride, aluminium nitride and boron carbide.
What are five examples of ceramics? Alumina, zirconia, silicon carbide, porcelain and glass — one from each major family: advanced oxide, toughened oxide, advanced non-oxide, traditional and amorphous.
Is glass a ceramic? Yes, in the broad sense — it is an inorganic non-metallic solid. It differs structurally: glass is amorphous, with no long-range atomic order, while most ceramics are crystalline.
Is concrete a ceramic? Usually classified separately as a cementitious composite. It is inorganic and non-metallic, but it sets by hydration at ambient temperature rather than being fired, so it falls outside the standard ceramic definition.
What are examples of advanced ceramics? Alumina, zirconia, silicon carbide, silicon nitride, aluminium nitride, boron carbide, boron nitride, ZTA, and functional materials such as PZT and barium titanate.
Which ceramic material is used most in industry? Alumina, by a wide margin among technical ceramics. It offers the best combination of properties per unit cost and is available in a wide range of purities and forms.
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