MgTiO3
ISO IEC 60672 Type C-320
MgTiO3 (C-320) is a magnesium titanate dielectric ceramic classified to IEC 60672 class C-320, offering high permittivity with low dielectric loss.
Reference datasheet — MgTiO3 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.
MgTiO3 tempers and conditions
MgTiO3 is supplied in 2 conditions, soft to hard.
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
MgTiO3–CaTiO3 temperature-stabilised | Pick when the resonant frequency must not drift: ~5 wt% CaTiO3 offsets the negative τf of MgTiO3, giving εr ≈ 21 and near-zero temperature coefficient for dielectric resonators and GPS/patch antennas. | — | 70 | 0 | 720 HV | 4 W/m·K |
High-purity high-Q microwave grade | Choose for microwave resonators and filters where unloaded Q dominates: high-purity, fully dense MgTiO3 with Q×f up to ~160 000 GHz and τf ≈ −50 ppm/°C. | — | — | — | 750 HV | 6 W/m·K |
Supply forms, finishes and certifications
Ways MgTiO3 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
STDDefault | Standard sintered MgTiO3 | Standard supply |
What is MgTiO3?
MgTiO3 (C-320) is a magnesium titanate dielectric ceramic classified to IEC 60672 class C-320, offering high permittivity with low dielectric loss. It is pressed, extruded or tape cast into discs, tubes, resonator pucks and capacitor bodies for temperature-compensating and microwave use, and is held in STD, MCT-0 and HQ conditions. It is not a structural material: machinability is poor (score 5), thermal conductivity is 4.5 W/m·K and maximum service temperature is 1000 °C, so parts are shaped green with 15–18 % firing shrinkage. Alumina is the choice where low permittivity is wanted. MgTiO3 has a density of 3.8 g/cm³ (0.137 lb/in³), lighter than 61% of ceramic grades. It melts at 1,630°C (2,966 °F). MgTiO3 has a tensile strength of 70 MPa (10.2 ksi), weaker than 60% of ceramic grades. Elongation at break is 0% and the elastic modulus is 150 GPa (21.8 Msi).
What is MgTiO3 used for?
- temperature-compensating capacitors
- microwave resonators
- RF dielectrics
MgTiO3 properties
Typical room-temperature values; bars are the position among ceramic grades.
Physical3
MgTiO3 has a density of 3.8 g/cm³ (0.137 lb/in³), lighter than 61% of ceramic grades. It melts at 1,630°C (2,966 °F).
Mechanical12
MgTiO3 has a tensile strength of 70 MPa (10.2 ksi), weaker than 60% of ceramic grades. Elongation at break is 0% and the elastic modulus is 150 GPa (21.8 Msi).
Thermal5
MgTiO3 is rated for continuous service to 1,000°C (1,832 °F). It conducts heat at 4.5 W/m·K (2.6 BTU/hr·ft·°F), worse than 64% of ceramic grades. Thermal expansion is 7.5 µm/m·K (4.17 µin/in·°F).
Electrical5
MgTiO3 is an electrical insulator with a dielectric strength of 12 kV/mm (304.8 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 MgTiO3 takes about 65 MJ of energy and emits 5.5 kg of CO₂ — less than 74% of ceramic grades. Typical recycled content is 0%.
Manufacturability3
MgTiO3'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. MgTiO3 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with MgTiO3
Is MgTiO3 easy to machine?
Machine in the green or bisque state (turning, drilling, CNC milling) with ~15–18 % firing shrinkage allowance; fired parts require diamond grinding, lapping or laser scribing only.
Can MgTiO3 be welded?
Not weldable — join by active-brazing (Ag-Cu-Ti) or glass frit; metallise with fired Ag/Mo-Mn + Ni for solderable electrodes.
Can MgTiO3 be formed, bent or molded?
Dry pressing, isostatic pressing, extrusion or tape casting of spray-dried powder, then sintering at ~1350–1470 °C in air with slow heat-up to burn out binder.
MgTiO3 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 |
|---|---|---|
| TiO2as MgTiO3 stoichiometry | 63 – 68 | 66.5 |
| CaTiO3temperature-compensating addition, ~5 wt% in MCT-0 variant | 0 – 8 | 0 |
| SiO2 + Al2O3 + alkali (sintering aids/imkept low in high-Q grades | 0 – 2 | 0.5 |
| MgOas MgTiO3 stoichiometry | ≥ 30 (balance) | — |
What surface finishes work on MgTiO3?
Diamond lapping/polishing to <0.1 µm Ra for microwave surfaces; thick-film Ag or thin-film Ti/Cu/Au metallisation for electrodes; no plating on the bare ceramic.
Equivalent designations
Standards and trade names that resolve to MgTiO3 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ISO
- IEC 60672 Type C-320
- Other
- C-320
How much does MgTiO3 cost?
MgTiO3 is a high-cost ceramic ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
MgTiO3 — frequently asked
What is MgTiO3 used for?
MgTiO3 is typically used for temperature-compensating capacitors, microwave resonators and RF dielectrics. In short: low-loss microwave dielectric; temperature-compensating capacitor ceramic; green-machined near-net shapes.
What is the tensile strength of MgTiO3?
MgTiO3 has a typical tensile strength of 70 MPa (10.2 ksi) — weaker than 60% of ceramic grades. Strength varies by condition: see the 2 listed tempers.
Is MgTiO3 easy to machine?
Not especially — machinability is rated not recommended (5/100, worse than 59% of ceramic grades). Machine in the green or bisque state (turning, drilling, CNC milling) with ~15–18 % firing shrinkage allowance; fired parts require diamond grinding, lapping or laser scribing only.
Can MgTiO3 be welded?
Not weldable — join by active-brazing (Ag-Cu-Ti) or glass frit; metallise with fired Ag/Mo-Mn + Ni for solderable electrodes.
What surface finishes work on MgTiO3?
Diamond lapping/polishing to <0.1 µm Ra for microwave surfaces; thick-film Ag or thin-film Ti/Cu/Au metallisation for electrodes; no plating on the bare ceramic.
Can MgTiO3 be formed, bent or molded?
Dry pressing, isostatic pressing, extrusion or tape casting of spray-dried powder, then sintering at ~1350–1470 °C in air with slow heat-up to burn out binder.
What is the maximum service temperature of MgTiO3?
MgTiO3 is rated for continuous use to about 1,000°C (1,832 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does MgTiO3 cost?
MgTiO3 is a high-cost ceramic ($$$$), pricier than about 78% 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 60672-3 Ceramic and glass insulating materials — Part 3: Specifications for individual materials — IEC (1997)
- Engineered Materials Handbook Vol. 4: Ceramics and Glasses — ASM International (1991)
- Magnesium titanate / MCT microwave dielectric resonator materials — Trans-Tech (Skyworks) (2022)
- Microwave dielectric ceramics property compilations (MgTiO3, MgTiO3–CaTiO3) — J. Am. Ceram. Soc. / J. Eur. Ceram. Soc. literature (2020)
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.