MnZn Ferrite MNZN
Grade · default condition
MNZN = manganese-zinc soft ferrite
Pick for power transformers, chokes and EMI suppression below ~2 MHz where high permeability and low core loss matter more than resistivity.
Values for the MNZN condition
Other MnZn Ferrite tempers and conditions
MnZn Ferrite is listed in 2 conditions; see the grade overview at MnZn Ferrite.
- NIZN
- MNZN
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Nickel-zinc soft ferrite | Pick for RF chokes, antenna rods, cable/bead EMI suppression above ~1 MHz, or where near-insulating cores and higher operating temperature are needed. | — | 28 | 0 | 650 HV | 4 W/m·K |
MNZNDefaultThis page Manganese-zinc soft ferrite | Pick for power transformers, chokes and EMI suppression below ~2 MHz where high permeability and low core loss matter more than resistivity. | — | 30 | 0 | 600 HV | 4 W/m·K |
What is MnZn Ferrite MNZN?
MnZn Ferrite MNZN is MnZn Ferrite in the MNZN grade — pick for power transformers, chokes and EMI suppression below ~2 MHz where high permeability and low core loss matter more than resistivity. MnZn Ferrite MNZN has a tensile strength of 30 MPa (4.35 ksi), weaker than 77% of ceramic grades. Elongation at break is 0% and the elastic modulus is 150 GPa (21.8 Msi). MnZn Ferrite MNZN has a density of 4.85 g/cm³ (0.175 lb/in³), heavier than 50% of ceramic grades. It melts at 1,550°C (2,822 °F).
Advantages
- Low embodied carbon — 3.2 kg CO₂/kg, better than 84% of ceramic grades
- Easy to machine — 15/100, better than 81% of ceramic grades
Limitations
- Limited service temperature — 130°C (266 °F), worse than 92% of ceramic grades
MnZn Ferrite MNZN properties
Typical room-temperature values for MnZn Ferrite MNZN; 15 are specific to this condition. Other listed values are MnZn Ferrite reference data and may not represent this condition. Bars are the position among ceramic grades.
Physical3
MnZn Ferrite MNZN has a density of 4.85 g/cm³ (0.175 lb/in³), heavier than 50% of ceramic grades. It melts at 1,550°C (2,822 °F).
Mechanical12
MnZn Ferrite MNZN has a tensile strength of 30 MPa (4.35 ksi), weaker than 77% of ceramic grades. Elongation at break is 0% and the elastic modulus is 150 GPa (21.8 Msi).
Thermal5
MnZn Ferrite MNZN is rated for continuous service to 130°C (266 °F). It conducts heat at 4 W/m·K (2.31 BTU/hr·ft·°F), worse than 68% of ceramic grades. Thermal expansion is 10 µm/m·K (5.56 µin/in·°F).
Electrical2
MnZn Ferrite MNZN has an electrical resistivity of 1 Ω·m.
Chemical & Environmental2
Corrosion resistance is good (65/100), worse than 67% of ceramic grades.
Sustainability4
Producing a kilogram of MnZn Ferrite MNZN takes about 40 MJ of energy and emits 3.2 kg of CO₂ — less than 88% of ceramic grades. Typical recycled content is 15%.
Manufacturability3
MnZn Ferrite MNZN's machinability is poor (15/100, better than 81% of ceramic grades).
Common Calculations4
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with MnZn Ferrite MNZN
Is MnZn Ferrite easy to machine?
Green machining before sintering is preferred; fired ferrite is hard and brittle and can only be diamond-ground, lapped or slotted, with chipping and magnetic-property degradation from grinding stress.
Can MnZn Ferrite be welded?
Not weldable — cores are joined by adhesive bonding (epoxy on lapped gap faces) or held mechanically by clips and bobbins.
Can MnZn Ferrite be formed, bent or molded?
Formed by dry uniaxial pressing or extrusion of spray-dried granulate, then sintered (MnZn 1250–1400 °C under controlled pO2, NiZn 1100–1280 °C in air) with ~15–20 % linear shrinkage.
What surface finishes work on MnZn Ferrite?
Mating gap faces are lapped flat; exposed cores are usually parylene/epoxy coated or resin-dipped for insulation and edge protection — no plating or anodizing applies.
MnZn Ferrite 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 |
|---|---|---|
| Fe2O3≈52–54 mol% for MnZn power grades | 66 – 73 | 70 |
| MnO≈25–35 mol% | 16 – 24 | 20 |
| CaO+SiO2+Co/Ti/Nb oxidesgrain-boundary and loss-tuning dopants | 0 – 0.5 | 0.2 |
| NiOreplaces MnO in the NiZn variant (NiZn: ~48–50 mol% Fe2O3, balance NiO+ZnO) | 0 – 25 | 0 |
| ZnO≈10–20 mol%; sets permeability/Curie point | ≥ 6 (balance) | — |
MnZn Ferrite MNZN — frequently asked
What is MnZn Ferrite MNZN used for?
MnZn Ferrite MNZN is typically used for transformer cores, inductors, EMI suppression beads and recording heads. In short: low-loss HF magnetic core; high-resistivity ferrite ceramic; 130 °C service ceiling.
What is the tensile strength of MnZn Ferrite MNZN?
MnZn Ferrite MNZN has a typical tensile strength of 30 MPa (4.35 ksi) — weaker than 77% of ceramic grades. Strength varies by condition: see the 2 listed tempers.
Is MnZn Ferrite MNZN easy to machine?
Not especially — machinability is rated poor (15/100, better than 81% of ceramic grades). Green machining before sintering is preferred; fired ferrite is hard and brittle and can only be diamond-ground, lapped or slotted, with chipping and magnetic-property degradation from grinding stress.
Can MnZn Ferrite MNZN be welded?
Not weldable — cores are joined by adhesive bonding (epoxy on lapped gap faces) or held mechanically by clips and bobbins.
What surface finishes work on MnZn Ferrite MNZN?
Mating gap faces are lapped flat; exposed cores are usually parylene/epoxy coated or resin-dipped for insulation and edge protection — no plating or anodizing applies.
Can MnZn Ferrite MNZN be formed, bent or molded?
Formed by dry uniaxial pressing or extrusion of spray-dried granulate, then sintered (MnZn 1250–1400 °C under controlled pO2, NiZn 1100–1280 °C in air) with ~15–20 % linear shrinkage.
What is the maximum service temperature of MnZn Ferrite MNZN?
MnZn Ferrite MNZN is rated for continuous use to about 130°C (266 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- Soft Ferrites and Accessories — Data Handbook — Ferroxcube (2013)
- Ferrites and Accessories — Material and Core Data — TDK / EPCOS (2023)
- Engineered Materials Handbook Vol.4: Ceramics and Glasses — ASM International (1991)
- GB/T 9633 (soft ferrite materials) (2019)
- IEC 60401 / IEC 62317 — Terms, dimensions and characteristics for ferrite cores — IEC (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.