C-210
C-210 is a zircon-based electrical porcelain classified under IEC 60672 as Type C-210 and supplied unglazed, glazed or in a high-density version.
Reference datasheet — C-210 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
C-210 tempers and conditions
C-210 is supplied in one standard condition, HD.
Supply forms, finishes and certifications
Ways C-210 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
GLZ | Glazed | Surface finish |
UNGLDefault | Unglazed | Surface finish |
What is C-210?
C-210 is a zircon-based electrical porcelain classified under IEC 60672 as Type C-210 and supplied unglazed, glazed or in a high-density version. It offers higher mechanical strength, around 70 MPa tensile, and lower dielectric loss than standard steatite and cordierite bodies, and is shaped by pressing, extrusion or slip casting into insulators and insulating hardware. Firing shrinkage of 12–16 % means tight tolerances require post-fire diamond grinding, and machinability of the fired body is very low. Steatite bodies remain cheaper where strength and dielectric loss requirements are moderate. C-210 has a density of 3.6 g/cm³ (0.13 lb/in³), lighter than 64% of ceramic grades. C-210 has a tensile strength of 70 MPa (10.2 ksi), weaker than 60% of ceramic grades. The elastic modulus is 150 GPa (21.8 Msi).
What is C-210 used for?
- high-voltage insulators
- spark plug bodies
- electronic insulating components
Advantages
- Low embodied carbon — 1.8 kg CO₂/kg, better than 95% of ceramic grades
C-210 properties
Typical room-temperature values; bars are the position among ceramic grades.
Physical2
C-210 has a density of 3.6 g/cm³ (0.13 lb/in³), lighter than 64% of ceramic grades.
Mechanical10
C-210 has a tensile strength of 70 MPa (10.2 ksi), weaker than 60% of ceramic grades. The elastic modulus is 150 GPa (21.8 Msi).
Thermal5
C-210 is rated for continuous service to 1,000°C (1,832 °F). It conducts heat at 3.5 W/m·K (2.02 BTU/hr·ft·°F), worse than 74% of ceramic grades. Thermal expansion is 4.5 µm/m·K (2.5 µin/in·°F).
Electrical5
C-210 is an electrical insulator with a dielectric strength of 20 kV/mm (508 V/mil) and a resistivity of 1×10¹² Ω·m.
Chemical & Environmental2
Corrosion resistance is excellent (85/100), better than 69% of ceramic grades.
Sustainability4
Producing a kilogram of C-210 takes about 25 MJ of energy and emits 1.8 kg of CO₂ — less than 96% of ceramic grades. Typical recycled content is 5%.
Manufacturability3
C-210's machinability is not recommended (5/100, worse than 59% of ceramic grades).
Common Calculations4
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the ceramic family
Yield strength against density for every ceramic grade FabDigit runs. C-210 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with C-210
Is C-210 easy to machine?
Green/bisque state can be turned or drilled with carbide; after firing only diamond grinding, lapping and ultrasonic/laser drilling are practical.
Can C-210 be welded?
Not weldable — join by glass frit sealing, active-metal brazing to metallized surfaces, or cemented/mechanical assembly.
Can C-210 be formed, bent or molded?
Dry pressing, isostatic pressing, extrusion or slip casting of the plastic clay-bearing body, then single firing at ~1250–1400 °C with ~12–16 % linear shrinkage.
C-210 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 |
|---|---|---|
| ZrO2 (as ZrSiO4)zircon flour as strengthening/opacifying phase | 20 – 40 | 30 |
| SiO2from zircon, quartz and clay | 35 – 50 | 42 |
| Al2O3from kaolin/clay, mullite forming | 12 – 25 | 18 |
| K2O+Na2Ofeldspar flux, controls glassy phase and loss | 1 – 5 | 3 |
| CaO+MgO+Fe2O3+TiO2minor oxides / impurities | 0 – 4 | 2 |
| glassy silicate bond phasebalance, formed on firing | balance |
What surface finishes work on C-210?
Options are as-fired, ground/lapped surfaces, sealing glaze, or Mo-Mn metallization plus Ni plating for brazed metal-to-ceramic joints.
Equivalent designations
Standards and trade names that resolve to C-210 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Also called
- IEC 60672 C-210
How much does C-210 cost?
C-210 is a premium-cost ceramic ($$$), cheaper than about 51% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
C-210 — frequently asked
What is C-210 used for?
C-210 is typically used for high-voltage insulators, spark plug bodies and electronic insulating components. In short: strongest electrical porcelain; lower loss than steatite; glazable and metallizable.
What is the tensile strength of C-210?
C-210 has a typical tensile strength of 70 MPa (10.2 ksi) — weaker than 60% of ceramic grades.
Is C-210 easy to machine?
Not especially — machinability is rated not recommended (5/100, worse than 59% of ceramic grades). Green/bisque state can be turned or drilled with carbide; after firing only diamond grinding, lapping and ultrasonic/laser drilling are practical.
Can C-210 be welded?
Not weldable — join by glass frit sealing, active-metal brazing to metallized surfaces, or cemented/mechanical assembly.
What surface finishes work on C-210?
Options are as-fired, ground/lapped surfaces, sealing glaze, or Mo-Mn metallization plus Ni plating for brazed metal-to-ceramic joints.
Can C-210 be formed, bent or molded?
Dry pressing, isostatic pressing, extrusion or slip casting of the plastic clay-bearing body, then single firing at ~1250–1400 °C with ~12–16 % linear shrinkage.
What is the maximum service temperature of C-210?
C-210 is rated for continuous use to about 1,000°C (1,832 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does C-210 cost?
C-210 is a premium-cost ceramic ($$$), cheaper than about 51% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- IEC 60672-1 Ceramic and glass insulating materials — Definitions and classification — IEC (1995)
- IEC 60672-3 Ceramic and glass insulating materials — Specifications for individual materials — IEC (1997)
- ASM Engineered Materials Handbook Vol. 4: Ceramics and Glasses — ASM International (1991)
- Technical porcelain / zircon-reinforced silicate ceramic datasheets — CeramTec / Ensinger / Kyocera (2023)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.