Model- or component-specific measured or teardown value.
NdFeB research
Magnet masses, models, installation locations and sources
Twelve data tables distinguish measured values, manufacturer statements, reproducible calculations, secondary-source values, literature factors and open data gaps. This makes clear how each figure was derived.
12 SectionResearch tables36+ Sources
Research tables
Twelve subjects, each with its own source and system boundary
Formulae and source references show the calculation method used. Generic values are not presented as model-specific bills of materials.
01→02→03→04→05→06→07→08→09→10→11→12→
Reading guide & evidence classes
System boundaries, evidence classes A-M to X, and rules for using the values correctly.
19 table rowsTop 10 by reference magnet mass
Ranking, values, basis, direct sources and evidence status.
14 table rowsLiterature-based factors & outliers
Reference factors used, with contradictory values shown separately.
11 table rowsWind turbine models with NdFeB
Substantiated topologies, calculated values and model-specific limitations.
23 table rowsWind turbines without NdFeB in the main generator
Clearly magnet-free generator architectures and system boundaries.
22 table rowsElectric vehicles with NdFeB
Models, motors, generations and measured/secondary-source values.
14 table rowsElectric vehicles without NdFeB in the traction motor
Only clearly magnet-free motor architectures tied to specific variants.
18 table rowsHybrid vehicle teardowns
Hybrid-vehicle teardowns: teardown values for motor and generator assemblies, with the system boundary, installation location, source evidence and a material classification relevant to purchase assessment.
14 table rowsRobotics & servo drives
Models, published data gaps and generic literature values.
14 table rowsOther devices & original applications
Pumps, HVAC systems, pedelecs, motors and other potential magnet sources.
31 table rowsStudies and sources
Government, manufacturer, laboratory and peer-reviewed sources.
40 table rowsContradictions, gaps & limitations
Open questions, contradictory values, primary evidence still required and limits on the technically robust use of the NdFeB data.
19 table rowsGuide to the data
A figure is only as meaningful as its system boundary
Model- or component-specific manufacturer figure.
Topology substantiated; quantity transparently calculated from a literature factor.
Teardown or market value reported in a reliable secondary source.
Generic literature value; do not present as a model-specific value.
Contradiction, unclear system boundary or insufficiently verified.