MgTiO3 MCT-0
Grade
ISO IEC 60672 Type C-320
MCT-0 = 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.
Values for the MCT-0 condition
Other MgTiO3 tempers and conditions
MgTiO3 is listed in 2 conditions; see the grade overview at MgTiO3.
- MCT-0
- HQ
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
MCT-0This page 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 |
What is MgTiO3 MCT-0?
MgTiO3 MCT-0 is MgTiO3 in the MCT-0 grade — 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. MgTiO3 MCT-0 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 155 GPa (22.5 Msi). MgTiO3 MCT-0 has a density of 3.88 g/cm³ (0.14 lb/in³), lighter than 59% of ceramic grades. It melts at 1,630°C (2,966 °F).
MgTiO3 MCT-0 properties
Typical room-temperature values for MgTiO3 MCT-0; 18 are specific to this condition. Other listed values are MgTiO3 reference data and may not represent this condition. Bars are the position among ceramic grades.
Physical3
MgTiO3 MCT-0 has a density of 3.88 g/cm³ (0.14 lb/in³), lighter than 59% of ceramic grades. It melts at 1,630°C (2,966 °F).
Mechanical12
MgTiO3 MCT-0 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 155 GPa (22.5 Msi).
Thermal5
MgTiO3 MCT-0 is rated for continuous service to 950°C (1,742 °F). It conducts heat at 4 W/m·K (2.31 BTU/hr·ft·°F), worse than 68% of ceramic grades. Thermal expansion is 8.5 µm/m·K (4.72 µin/in·°F).
Electrical5
MgTiO3 MCT-0 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 very good (82/100), better than 61% of ceramic grades.
Sustainability4
Producing a kilogram of MgTiO3 MCT-0 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 MCT-0's machinability is not recommended (5/100, worse than 59% of ceramic grades).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with MgTiO3 MCT-0
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.
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.
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) | — |
MgTiO3 MCT-0 — frequently asked
What is MgTiO3 MCT-0 used for?
MgTiO3 MCT-0 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 MCT-0?
MgTiO3 MCT-0 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 MCT-0 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 MCT-0 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 MCT-0?
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 MCT-0 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 MCT-0?
MgTiO3 MCT-0 is rated for continuous use to about 950°C (1,742 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
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. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.