| HS Code | 445579 |
| Density | 3.4 g/cm³ |
| Melting Point | 178 °C |
| Tensile Strength | 38 MPa |
| Elongation At Break | 2.5 % |
| Flexural Modulus | 9500 MPa |
| Charpy Impact Notched | 4 kJ/m² |
| Hardness Shore D | 83 |
| Heat Deflection Temperature 1 8mpa | 95 °C |
| Max Continuous Service Temperature | 100 °C |
| Thermal Conductivity | 0.5 W/(m·K) |
| Volume Resistivity | 1e5 Ω·cm |
| Magnetic Flux Density Br | 0.30 T |
| Magnetic Coercivity Hcb | 160 kA/m |
| Max Energy Product Bhmax | 12 kJ/m³ |
As an accredited Barlog Plastics KEBABLEND M FE 120202 PA12 for Plastic Bonded Magnets factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in sealed 25 kg moisture-protected polyethylene bags, labeled with product identification and batch traceability. |
| Container Loading (20′ FCL) | 20′ FCL loading of Barlog Plastics KEBABLEND M FE 120202 PA12 for plastic bonded magnets, safely packed and containerized. |
| Shipping | Barlog Plastics KEBABLEND M FE 120202 is shipped as moisture-protected sealed bags on pallets, suitable for standard dry-cargo transport. It is non-hazardous under normal conditions; keep away from excessive heat, humidity, and direct sunlight. Ensure secure palletization to prevent damage during transit. |
| Storage | Store in a cool, dry, and well-ventilated area, away from direct sunlight, heat sources, and moisture. Keep the original container tightly sealed to prevent contamination and humidity absorption. Avoid exposure to UV radiation and temperatures above 30°C. Use within the recommended shelf life and keep away from incompatible materials. |
| Shelf Life | Shelf life is approximately 12 months from manufacture when stored sealed, cool, and dry. |
Ferrite-filled PA12 compounds are used in wheel speed sensor rings because the binder must retain dimensional stability after exposure to road splash, calcium chloride brine, and underbody temperature cycling while the magnetized multipole pattern remains legible to active Hall or GMR pickup sensors. Compliance for series production is anchored to IATF 16949:2016 clause 8.4.2.3 for supplier quality, RoHS Directive 2011/65/EU Annex II lead and cadmium limits, and REACH EC 1907/2006 SVHC candidate list screening. Magnetic property verification follows IEC 60404-5 using a Helmholtz coil and fluxmeter after pulse magnetization. In this application KEBABLEND M FE 120202 is used as a ready-to-mold compound at 100 parts by weight; process regrind from sprue and runner return is held at ≤20 parts per 100 parts virgin compound because higher regrind levels in ferrite-filled PA12 have been linked on 1,000 kN injection molding machines to melt pressure variation above ±3% and a spiral flow length reduction greater than 5%. Published data for this exact grade is limited. The downstream process begins with drying pellets in a dry-air hopper at 80°C for 4–6 h to reduce moisture to ≤0.1%, followed by injection molding on a wear-protected machine with a bimetallic barrel, hard-chrome screw, and clamp force in the 800–1,200 kN range for multipole rings. Melt temperature is set between 230°C and 250°C, mold temperature between 60°C and 90°C, injection pressure between 80 MPa and 120 MPa, and holding pressure between 40 MPa and 60 MPa. After molding, rings are magnetized in a capacitor-discharge fixture with 8–24 pole heads depending on the encoder count. Terminal parts include ABS wheel speed encoder rings, transmission output speed sensor rings, crankshaft position sensor rings, steering angle sensor magnet carriers, and electronic parking brake actuator magnet rings.
Drain pump rotors for 230 V 50 Hz washing machines are injection-molded from ferrite-filled PA12 compounds where the rotor must function in 60–90°C alkaline wash water, resist detergent deposits, and maintain rotational balance without post-machining. Compliance for this application is based on IEC 60335-1:2020 and IEC 60335-2-7:2019 for washing machines, RoHS Directive 2011/65/EU, and full material declaration against REACH EC 1907/2006 SVHC. Rotor balance is verified to ISO 1940-1:2003 balance quality grade G 6.3. The material is processed at 100 wt% as supplied; runner regrind may be reintroduced at up to 20 wt% of total shot mass provided that melt mass-flow rate measured to ISO 1133-1:2022 does not shift by more than ±5% from the virgin control. Downstream production on a horizontal injection molding machine with magnetic platen or insert tooling involves drying at 80°C to ≤0.1% moisture, melt temperature 230–250°C, mold temperature 60–80°C, injection speed adjusted to keep gate shear rate below 50,000 s−1, and back pressure limited to 0.5–1.0 MPa. The rotor is insert-molded over a stainless steel shaft preheated to 90–110°C; the cavity is vented to 20–30 µm depth to avoid gas burn at the pole face. After molding and conditioning at 23°C/50% RH for 24 h, the rotor is magnetized with 8–12 poles and checked for pole-to-pole flux deviation. Terminal part types are washing machine drain pump rotors, dishwasher circulation pump rotors, condensate pump rotors, refrigerator fan motor rotors, and range hood fan motor rotors.
In laser printer developing stations, the magnetic roller sleeve must deliver a uniform brush height across a 200–250 mm width; fluctuation of ferrite filler distribution along the melt flow path has been detected as print density deviation greater than 2% measured according to ISO/IEC 19798:2017. The material is specified under IEC 62368-1:2018 for office equipment safety, RoHS Directive 2011/65/EU for electrical parts, and REACH EC 1907/2006. The addition ratio in the downstream plant is 100 wt% KEBABLEND M FE 120202; an in-house regrind fraction of ≤10 wt% is used only in non-image-critical zones of the roller because regrind above 15 wt% can increase melt residence time and shift the ferrite volume fraction at the end of fill. Production is carried out on a single-cavity or two-cavity injection mold with a center sprue or ring gate to create radial flow symmetry; the machine uses a wear-resistant screw with a non-return valve designed for ceramic-filled compounds, a melt temperature of 240°C, a mold temperature of 80–100°C, and a reduced back pressure of 0.5–1.0 MPa. Screw rotation speed is limited to 60–80 min−1 to limit frictional heating and prevent PA12 binder degradation in the compression section. Molded sleeves are demolded and conditioned for 48 h at 23°C/50% RH before multipole magnetization on a fixture with knife-edge flux probes. Terminal products are copier magnetic developer rolls, toner cartridge magnet sleeves, paper transport magnetic rollers, and laser printer developing rollers.
Magnetically coupled centrifugal pumps used in laboratory liquid transfer and extracorporeal circulation devices use encapsulated drive magnet rings made from ferrite-filled PA12 because the binder must survive repeated hot water and detergent disinfection, exhibit low moisture swell, and avoid adhesive joints that can fail under torque reversal. Medical device compliance for this application follows ISO 13485:2016, FDA 21 CFR Part 820 quality system requirements, and ISO 10993-1:2018 when the overmolded magnet surface may contact body fluids; electrochemical compatibility is screened under RoHS Directive 2011/65/EU and REACH EC 1907/2006. The formulation ratio is fixed at 100 parts virgin KEBABLEND M FE 120202; process regrind is not permitted in blood-contact or implant-adjacent devices due to traceability and particle cleanliness requirements. Downstream manufacturing uses a dedicated cleanroom injection molding cell with a wear-resistant bimetallic barrel and screw, drying at 80°C for 6 h to ≤0.1% moisture, melt temperature 225–245°C, mold temperature 70–90°C, and clamp force between 600 kN and 1,000 kN depending on rotor diameter. The magnet ring is insert-molded or overmolded onto a stainless steel or medical-grade polymer hub; process validation includes IQ/OQ/PQ and part inspection for dimensional stability after 121°C autoclave cycling. The finished assemblies are pulse-magnetized to provide 2–8 pole pairs and then tested for magnetic coupling torque before release. Terminal product types include magnetically coupled centrifugal pump impellers, syringe pump drive magnets, laboratory automation magnetic couplings, and dialyzer circulation pump rotors.
Rotary encoder wheels and linear magnetic scales are exposed to 10–80% RH in industrial automation environments; a PA12 binder for ferrite is selected instead of PA6 because its saturated water absorption under ISO 62:2008 is approximately 1.5 wt% at 23°C, whereas PA6 exceeds 9 wt%, and the lower moisture uptake reduces swelling-induced pole pitch error in magnetized tracks. Equipment compliance is covered by EN 61326-1:2013 for electromagnetic compatibility of measurement, control, and laboratory equipment, RoHS Directive 2011/65/EU, and ISO 9001:2015 for manufacturing traceability. The compound is used at 100 wt% as supplied; tooling sprue and runner regrind may be recycled at up to 12 wt% only into non-magnetized structural sections of encoder hubs after validation of melt viscosity change by ISO 1133-1:2022. Production uses an 8-cavity hardened mold with conformal cooling channels, a melt temperature of 230–250°C, mold temperature 60–80°C, injection speed 60–100 mm/s, and holding pressure controlled to keep pole face flatness better than 0.03 mm. After demolding, parts are annealed for 2 h at 120°C in a nitrogen-purged oven to reduce residual stress before magnetization. Terminal product types are rotary encoder wheels, linear magnetic scales, pneumatic cylinder position sensor magnets, valve position sensor magnet rings, and AGV steering feedback magnet rings.
HVAC blower motors and seat ventilation fans in 12 V automotive networks use ferrite-PA12 rotor rings because the material can be injection-molded into thin-wall sections and magnetized with 8–12 poles without secondary balancing in low-inertia rotors. The application is controlled by IATF 16949:2016, RoHS Directive 2011/65/EU, and REACH EC 1907/2006; the compound is used at 100 wt% as delivered, with sprue regrind limited to ≤15 wt%. Drying at 80°C for 4 h to ≤0.1% moisture precedes injection molding at melt temperature 230–250°C and mold temperature 60–80°C. Terminal parts are HVAC blower motor rings, seat ventilation rotor rings, battery cooling fan rotor rings, and small auxiliary pump rotor rings.
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Barlog Plastics KEBABLEND M FE 120202 is a polyamide 12 (PA12) injection moulding compound formulated for plastic-bonded hard ferrite magnets. The grade designation indicates an iron-based magnetic filler system dispersed in a PA12 binder; the numerical suffix is an internal Barlog Plastics identifier and does not correspond to a published melt flow index or filler content. In production, the compound is supplied as granules for injection moulding of isotropic and anisotropic magnet segments, sensor targets, encoder rings, motor rotor rings, and multipole rings. The PA12 binder reduces equilibrium moisture uptake to approximately 0.5–0.8% at 23 °C and 50% RH when measured per ISO 62, compared with 2.5–3.0% for equivalent PA6-based bonded magnet grades under the same conditions. Because ferrite-filled polyamide density typically ranges from 3.2 g/cm³ to 3.8 g/cm³ per ISO 1183-1, the compound is significantly heavier than unfilled PA12, which is normally 1.01–1.03 g/cm³. Published data for this specific configuration is limited; the ranges stated here are representative of industrial ferrite-filled PA12 bonded magnet compounds and must be verified against a Barlog Plastics certificate of analysis before tool design or part qualification.
Magnetic output in plastic-bonded ferrite grades depends on filler volume fraction, ferrite particle size distribution, and the presence of an orienting magnetic field during holding pressure. For isotropic moulded ferrite-PA12 compounds, typical remanence values are 230–290 mT, intrinsic coercivity values are 180–250 kA/m, and maximum energy product values fall between 12 kJ/m³ and 17 kJ/m³ when evaluated according to IEC 60404-5. Anisotropic grades require a cavity-side orientation field; industrial tooling often applies 800–1,200 kA/m during melt solidification to align the ferrite particles before the PA12 matrix freezes. The exact magnetic filler loading of M FE 120202 is not stated in publicly available documentation. Magnetic performance must therefore be measured on magnetized prototypes and compared with the part-specific remanence, coercivity, and pole geometry requirements rather than inferred from the grade designation alone.
The principal difference is moisture absorption. PA12 absorbs less water than PA6, and this limits the shift in post-mould dimensions and magnetic pole geometry when parts are exposed to humid air. PA6-based ferrite compounds can take up 2.5–3.0% moisture at 23 °C and 50% RH, which can produce measurable dimensional growth, reduced glass-transition temperature, and lower mechanical stiffness. PA12-ferrite grades show lower moisture uptake and therefore better dimensional stability in humid assemblies, although their heat deflection temperature is typically lower than that of reinforced PA6. Polyphenylene sulfide (PPS) bonded magnet compounds offer higher thermal resistance and very low moisture absorption, but they require melt temperatures above 300 °C, mould temperatures above 130 °C, and more expensive tool heating systems. The PA12 grade is therefore selected when low moisture uptake, moderate thermal demand, and processability on general-purpose injection moulding machines are more important than maximum continuous-use temperature.
| Parameter | Test standard | PA12 + hard ferrite | PA6 + hard ferrite | PPS + hard ferrite |
|---|---|---|---|---|
| Density | ISO 1183-1 | 3.2–3.8 g/cm³ | 3.3–3.9 g/cm³ | 3.5–4.1 g/cm³ |
| Water absorption, 23 °C/50% RH | ISO 62 | 0.5–0.8% | 2.5–3.0% | <0.05% |
| Recommended melt temperature | — | 230–270 °C | 240–280 °C | 300–340 °C |
| Heat deflection temperature, 1.8 MPa | ISO 75-2/A | 75–110 °C | 90–130 °C | 240–270 °C |
| Typical isotropic remanence | IEC 60404-5 | 230–290 mT | 230–290 mT | 220–280 mT |
The table presents representative ranges rather than grade-specific values because the magnetic filler content, particle size distribution, and surface treatment can shift the final properties. For M FE 120202, the user should request a batch-specific certificate showing density, moisture content, and magnetic test results. Tensile modulus of ferrite-filled PA12 generally lies between 5,000 MPa and 10,000 MPa per ISO 527-2; elongation at break is often below 2% because the high filler fraction embrittles the part. This low elongation requires robust ejection and part handling systems, especially for thin-wall rings with wall sections below 1.5 mm.
In injection moulding of hard ferrite-filled PA12 grades, the first processing constraint is moisture control. Pre-drying in a desiccant dryer at 80 °C for 4–6 h is recommended to reach a residual moisture content below 0.1%. When ambient relative humidity exceeds 60%, open granulate transfer should be limited to 15 min or dry-air conveying should be used. Residual moisture above 0.15% can generate splay, surface voids, and hydrolytic molecular weight loss in the PA12 phase, even though the ferrite filler itself is not hygroscopic. Melt volume-flow rate and shear viscosity should be characterized by capillary rheometry per ISO 11443 because filler orientation and wall slip can make single-point melt flow index data misleading for tool filling simulation.
Barrel and screw selection should reflect the abrasive nature of iron-based filler. Three-zone screws with 20:1 to 25:1 L/D and compression ratios of 2.0 to 2.5 are suitable; screws and non-return valves with nitrided or bimetallic hardfacing are specified because ferrite accelerates wear compared with unfilled PA12. The PA12 phase has a crystallite melting temperature near 175–180 °C, and recommended melt temperatures are 230–270 °C, with the lower half preferred to limit thermo-oxidative degradation. Mould temperatures between 60 °C and 90 °C are used to delay gate freeze and improve cavity packing. Injection pressures of 80–120 MPa and moderate-to-high injection speeds are common; for anisotropic grades the hold-pressure phase must be long enough to maintain particle orientation while the gate remains molten. At melt temperatures above 250 °C, residence time should not exceed 5–8 min to avoid chain scission and brown discoloration in the PA12 matrix.
Tooling practice on production-scale equipment shows that small gates are vulnerable to filler abrasion and gate blockage. Needle gates below 0.8 mm in hot-runner systems require carbide or hardened inserts. Vent depths should be 0.02–0.05 mm to allow gas evacuation without flash. Draft angles of 1°–2° on core pins and magnet ring walls reduce ejection stresses because the compound has low elongation at break. Batch-to-batch ferrite particle size distribution must be controlled; coarse fractions increase gate wear, reduce moulded density, and lower magnetic particle alignment in anisotropic cavities. Production experience with ferrite-filled polyamides indicates that screw and barrel wear is accelerated compared with unfilled grades, and maintenance intervals should be established by monitoring melt pressure stability and screw recovery time rather than by a fixed production-hour schedule alone.
Hard ferrite bonded magnet compounds typically contain 80–90 wt% magnetic filler. At this loading, melt viscosity is dominated by particle-particle interactions, and the PA12 carrier contributes mainly as a flow and binding phase. The high filler fraction raises thermal conductivity relative to unfilled PA12, which can help freeze the melt quickly in thick sections but also increases the risk of external weld-line formation. Flowability is therefore not equivalent to a standard unfilled PA12 and must be evaluated in the actual cavity geometry. Short shots in thin magnet pole segments are often caused by premature freeze-off at the flow front, not by barrel melt temperature alone. Increasing melt temperature above 270 °C does not always improve flow because it can degrade the PA12 binder and reduce melt strength at the gate.
For anisotropic M FE 120202 applications, the cavity-side orientation field must be active before the melt front enters the magnetizing zone. If the field is applied only after cavity filling, orientation occurs mainly in the still-molten core while the frozen outer layers remain partially unaligned, reducing net remanence. The orienting field strength of 800–1,200 kA/m is applied during the holding-pressure window; the practical lower limit depends on the ferrite coercivity, the cavity wall temperature, and the gate freeze time. After moulding, final magnetization is performed on the finished part, often with a saturation field of at least 2.5 times the intrinsic coercivity. Multipole magnetizing fixtures must match the pole count and pole pitch of the part; mismatched fixtures can produce weak or asymmetric pole transitions that are not corrected by higher filler loading.
Mechanical strength in ferrite-filled PA12 is limited by the high filler fraction. Tensile elongation values are low, and the compound behaves as a stiff, brittle material under impact. Sharp internal corners, thin unsupported flanges, and press-fit assembly can initiate cracking. For rotor rings and sensor carriers, moulded holes and keyways should have radii of at least 0.5 mm where practical. The low moisture absorption of PA12 does not eliminate the need for conditioning before dimensional measurement; parts should be conditioned according to ISO 291 and measured after dimensional stabilization, particularly when interchangeability with PA6 or PPS designs is being evaluated.
In thin-wall sensor housings and encoder discs, a PA12-ferrite injection moulding compound is selected to replace compression-moulded thermoset epoxy bonded magnets when cycle time and part complexity are critical. Thermoset epoxy bonded magnets can be highly filled and dimensionally stable at elevated temperature, but they require longer cure cycles and generate crosslinked scrap that cannot be re-melted. PA12-ferrite injection moulding allows multi-cavity production, integration of mechanical snap fits and bearing seats, and direct reuse of clean sprues and runners. The process limitation is thermal: PA12-ferrite grades typically serve continuous-use temperatures of 90–120 °C, whereas some thermostat epoxy bonded magnets can operate above 180 °C depending on hardener chemistry. In underhood or high-temperature actuator positions, a PA12 grade should not be substituted without verifying the thermal endurance of the magnetized assembly under load.
Operational boundaries include moisture protection before processing and controlled regrind addition. Clean sprues and runners from the same M FE 120202 material can be re-introduced at up to 20 wt% if they are dry and free from oil or mould-release contamination. Higher regrind fractions can shift melt viscosity, reduce mechanical strength, and increase variability in magnetic pole output because of repeated heat history. Contamination with PA6 regrind should be avoided because the higher moisture absorption of PA6 alters dimensional stability and magnetic pole geometry. Low-melting acetal or polyolefin purging compounds should not be used directly before production; these contaminants can form low-viscosity domains that reduce filler dispersion and create surface defects. At residual moisture above 0.15%, vacuum venting or reduced screw speed does not fully compensate for hydrolytic viscosity loss. The compound should be handled as a filled engineering thermoplastic, not as a standard unfilled PA12, in drying, conveying, mould protection, and tool maintenance procedures.
