| Operating-point definition | Electrical frequency, flux density, waveform, duty cycle, speed relation, temperature state, cooling assumption, and motor topology | Core loss and permeability are meaningful only when the buyer operating point and test condition are declared together. |
| Sample or coupon basis | Ring coupon, pressed tooth segment, full stator sample, machined feature, coated sample, buyer fixture, drawing revision, and sample IDs | A coupon result is useful for screening, but release evidence should say whether it represents the actual part geometry and process route. |
| Magnetic report scope | B-H curve, initial or relative permeability, saturation note, core-loss table, frequency points, flux-density points, waveform, and fixture note | Report scope should match the decision gate: material screening, prototype approval, supplier comparison, or pilot release. |
| Physical evidence paired with magnetic data | FAI dimensions, CTQ report, density or weight check, visual condition, coating or insulation state, and deviation list | Magnetic variation can come from geometry, density, machining, coating, or handling, not only from nominal material grade. |
| Insulation and thermal boundary | Hi-pot or insulation note, coating route, surface condition, thermal exposure, temperature point, and post-process state | Insulation and thermal state should be scoped separately when the buyer assembly or winding process can shift results. |
| Traceability and release decision | Powder lot if available, compaction route, thermal route, drawing revision, sample IDs, report IDs, acceptance notes, and next gate | Supplier approval is stronger when test data can be traced back to the same sample lot and drawing revision being accepted. |