Run the tool to get fit/conditional/not-fit output in seconds. Then use the report sections to verify boundaries, key numbers, sourcing risk, and fallback actions before releasing an RFQ.
Input duty and sourcing constraints for your NdFeB magnet program. The tool returns fit classification, confidence, boundary notes, and next actions.
No result yet
Run the tool to generate fit classification, grade window, and RFQ action path.
The output includes suitability boundaries and a fallback route when NdFeB is not a safe primary lane.
Reference run used for review: compact actuator program with moderate corrosion and balanced cost target.
Observed output: Typical output is "Conditional fit" with sintered NdFeB primary lane, an epoxy-over-Ni coating check, and a mandatory SmCo contingency lane until thermal/corrosion validation closes.
Why this matters: This shows how the page logic converts mixed constraints into a concrete RFQ action path instead of a generic material definition.
These cards summarize the key decisions, core numbers, and applicability boundaries so teams can align quickly.
Run tool
Confidence is calculated after thermal/corrosion/shape penalties.
Pending result
Adjusted value includes environment, geometry, and compliance penalties before class mapping.
28-53 MGOe
Source: [S11] plus supplier datasets; usable output still depends on load-line, geometry, and temperature.
35%-40% N-1 coverage
Source: [S4], 2035 shock scenario for graphite + rare earth elements. Use contingency lanes before RFQ freeze.
100% U.S. net reliance (2025)
Source: [S2] heavy rare earth chapter. High-temperature programs should disclose Dy/Tb exposure assumptions.
Numeric claims are disclosed with date markers. Unknown or uncertain items are explicitly labeled to avoid false certainty.
| Metric | Value | Date marker | Decision implication | Source ref |
|---|---|---|---|---|
| U.S. rare-earth concentrate output (REO) | 51,000 t and USD 240M | USGS MCS 2026 chapter, published 2026-02 | Shows domestic output scale but not full self-sufficiency for downstream NdFeB supply chains. | [S1] |
| U.S. imports of RE compounds/metals | +169% volume in 2025; value USD 165M vs USD 168M in 2024 | USGS MCS 2026 chapter, published 2026-02 | Procurement risk is driven by product mix and category shifts, not only by headline import value. | [S1] |
| World rare-earth production estimate | 390,000 t in 2025 | USGS MCS 2026 foreword (published 2026-02) | Global supply expanded, but growth does not remove concentration and policy-shock exposure. | [S3] |
| Heavy rare-earth net import reliance (U.S.) | 100% in 2025 (compounds and metals) | USGS MCS 2026 heavy rare earths chapter, published 2026-02 | High-temperature NdFeB lanes can inherit geopolitical and licensing risks through Dy/Tb exposure. | [S2] |
| Rare-earth demand change in STEPS | +50% to +60% by 2040 | IEA Global Critical Minerals Outlook 2025 | Even moderate scenario growth keeps pressure on magnet-material qualification and sourcing plans. | [S4] |
| China projected refining share (battery-grade graphite + rare earths) | Around 80% in 2035 | IEA Global Critical Minerals Outlook 2025 | Dual-lane sourcing should start before RFQ freeze for high-risk temperature classes. | [S4] |
| N-1 supply coverage for graphite + rare earths | Only 35% to 40% of N-1 demand in 2035 | IEA Global Critical Minerals Outlook 2025 | Single-country disruption can invalidate otherwise "balanced" supply assumptions. | [S4] |
| Salt spray as field-life predictor | Seldom correlates when used as stand-alone data | ASTM B117-26, last updated 2026-01-19 | Do not convert fog-test hours directly into service-life commitments without corroborating evidence. | [S10] |
Note: Grade suffix windows shown here are supplier planning conventions. Final qualification always depends on measured magnetic curves, thermal reserve checks, and application-specific validation.
Evidence refresh timestamp for this section: 2026-02-18.
Share your duty profile, shipment lane, and channel assumptions. We will return an RFQ-ready action list with fallback triggers.
The method combines technical feasibility and sourcing execution in one path so output can directly drive next actions.
Step 1 - Convert inputs into adjusted peak duty
Tool applies environmental, geometry, and certification penalties to convert user-entered peak temperature into planning duty.
Step 2 - Gate against suffix windows and flux demand
Adjusted peak duty maps to N/AH planning windows while requested flux density screens for sintered, bonded, or fallback routes.
Step 3 - Add coating and validation burden
Corrosion exposure determines coating stack and required validation evidence before RFQ lock.
Step 4 - Produce action path with confidence
The output reports confidence, risk rows, and next actions so teams can move directly into RFQ or fallback planning.
Every key conclusion maps to a source and date marker so reviewers can validate or challenge assumptions quickly.
| Ref | Source | Signal used on this page | Date marker |
|---|---|---|---|
| S1 | USGS MCS 2026 - Rare Earths chapter | Reports U.S. REO concentrate output (51,000 t, USD 240M) and import shift (+169% volume; value USD 165M vs USD 168M in 2024). | Published 2026-02 |
| S2 | USGS MCS 2026 - Heavy Rare Earths chapter | Shows U.S. net import reliance at 100% in 2025 and documents 2025 export-control timeline affecting heavy rare earths. | Published 2026-02 |
| S3 | USGS Mineral Commodity Summaries 2026 (foreword) | States world rare-earth production estimate reached 390,000 tons in 2025. | Manuscript approved 2026-02-06 |
| S4 | IEA Global Critical Minerals Outlook 2025 | Rare-earth demand rises 50%-60% by 2040 in STEPS; China around 80% refining share in 2035; N-1 coverage for graphite + rare earths only 35%-40%. | Published 2025 |
| S5 | DOE Critical Materials Assessment 2023 | Executive summary states Nd, Pr, Dy, Tb used in EV motor and wind generator magnets continue to be critical. | Published 2023-07-31 |
| S6 | IEC 60404-5:2015 | Defines measurement methods for magnetic flux density, polarization, field strength, demagnetization curve, and recoil line for permanent magnets. | Publication date 2015-04-16 |
| S7 | IEC 60404-8-1:2023 | Specifies minimum magnetic-property values and dimensional tolerances for magnetically hard materials, including updated REFeB grades. | Publication date 2023-09-20 |
| S8 | IEC 60404-18:2025 | Defines open-circuit superconducting-magnet methods (SCM-VSM and SCM-extraction) and self-demagnetizing-field corrections. | Publication date 2025-02-20 |
| S9 | IEC TR 62518:2009 | Details flux-loss behavior of Nd-Fe-B and SmCo sintered magnets from 50C to 200C for up to 1000 h; explicitly excludes corrosion-coupled stability modeling. | Publication date 2009-03-17 |
| S10 | ASTM B117-26 | Defines salt-spray apparatus as a controlled comparative test and warns that stand-alone correlation to natural environment is seldom reliable. | Last updated 2026-01-19 |
| S11 | Review paper on bonded NdFeB (Journal of Alloys and Compounds 2025) | Notes isotropic bonded NdFeB is often <=16 MGOe while anisotropic bonded routes can approach ~25 MGOe. | Published 2025-07-15 |
These boundaries are used to prevent over-interpretation of catalog labels and to define where additional evidence is mandatory.
| Boundary | Meaning | Use when | Do not use when | Source ref |
|---|---|---|---|---|
| BHmax headline is not assembly force | Energy-product labels compare material potential, not guaranteed pull force in your magnetic circuit. | Use BHmax as first-pass screening with geometry and load-line assumptions declared. | Do not rank suppliers by BHmax alone when measurement method or working point is undisclosed. | [S6][S7][S8] |
| Grade suffix is a planning shortcut | N/M/H/SH/UH/EH/AH ranges are commonly used in commerce but are not a standalone release criterion. | Use suffix classes for early lane gating before detailed BH-curve and demag checks. | Do not treat suffix labels as universal guarantees across vendors without material test disclosure. | [S6][S7] |
| Salt spray is comparative, not life prediction | Salt-fog testing helps compare coating options in controlled chambers. | Use as a screening gate with replication and clear acceptance criteria. | Do not map salt-spray hours directly to field-life commitments without corroborating long-term exposure data. | [S10] |
| High-temperature NdFeB can raise heavy-RE exposure | Programs near EH/AH lanes can become more sensitive to Dy/Tb availability and export controls. | Trigger dual-lane sourcing and fallback windows before RFQ lock when adjusted peak duty is high. | Do not assume global supply expansion alone removes element-specific licensing or concentration risks. | [S2][S4][S5] |
| Thermal stability data has defined scope | Published stability studies include specific time/temperature windows and may exclude corrosion-coupled behavior. | Use the tested windows (for example 50C to 200C, up to 1000 h) as boundary references only. | Do not extrapolate beyond reported conditions without additional testing for corrosion, duty cycling, and geometry effects. | [S9] |
Compare material routes using reproducible dimensions instead of marketing-only descriptors.
| Decision dimension | Sintered NdFeB | Bonded NdFeB | SmCo | Comment | Source ref |
|---|---|---|---|---|---|
| Typical magnetic energy density window | 28-53 MGOe | <=16 MGOe (isotropic), up to ~25 MGOe (anisotropic) | 20-33 MGOe | Values are orientation windows from cited source sets; geometry and working point still shift usable output. | [S11] |
| Planning temperature ceiling | Commercial planning classes often run through AH around 220C (verify by curve and load-line) | Typically lower than sintered due to polymer binder constraints | Used as high-temperature fallback; IEC TR 62518 discusses elevated-temperature stability behavior | Use adjusted peak temperature, not ambient. Final limit must come from vendor curves under your duty profile. | [S9] |
| Shape freedom and manufacturing | Strong but brittle; machining tolerance management is critical | Higher shape freedom for complex and thin-wall geometries | Brittle ceramic-like behavior; machining control required | Shape complexity can justify bonded routes even when peak BHmax is lower. | [S11] |
| Corrosion baseline | Coating usually required (Ni-Cu-Ni, epoxy, or equivalent) | Binder contributes baseline protection but media compatibility must still be verified | Better inherent corrosion behavior in many environments | ASTM B117 / IEC 60068-2-11 are gate checks, not direct life models. | [S10] |
| Supply concentration exposure (2035 view) | High for Nd/Pr, and potentially Dy/Tb in high-temperature coercivity lanes | Still tied to rare-earth feedstock plus binder/process dependencies | Different critical-material exposure profile (includes cobalt) | IEA N-1 analysis shows concentration shock can leave only 35%-40% coverage for rare-earth linked chains. | [S4] |
| Measurement comparability baseline | Require demag curve + recoil line under disclosed method | Request the same measurement family and working-point disclosure | Normalize by same method before ranking across vendors | IEC 60404-5 and IEC 60404-18 describe measurement methods; IEC 60404-8-1 defines minimum property specifications. | [S6][S7][S8] |
| Best-fit program conditions | General high-flux motors, sensors, compact electromechanics | Complex geometry, high-volume molding, lower peak flux density demands | Very high-temperature or severe thermal-cycle duty | Always close loop with demag, corrosion, and thermal evidence before release. | [S5][S9] |
Misuse risk, cost risk, and scenario mismatch risk are shown together so the team can sequence mitigation actions.
| Risk | Probability | Impact | Mitigation |
|---|---|---|---|
| Thermal misclassification versus real hotspot duty | Low | Medium | Recalculate adjusted peak with measured duty cycle and confirm class with demag-curve checks before PO. |
| Coating-lifecycle mismatch under real media exposure | Medium | Medium | Map media profile to explicit corrosion + thermal-cycle tests and define pass/fail criteria up front. |
| Supplier data non-comparability (test method mismatch) | Medium | Medium | Require method disclosure (IEC 60404 family) and normalize working points before ranking quotes. |
| High-temperature lane heavy-rare-earth exposure | Medium | Medium | When adjusted duty approaches EH/AH lanes, request Dy/Tb exposure disclosure and define export-control fallback triggers before award. |
| Supply concentration shock during launch window | High | Medium | Maintain contingency lane and pre-define switch triggers for temperature, lead time, and cost tolerance. |
Where public evidence is incomplete, this page does not force a hard conclusion. Each gap includes a minimal executable closure action.
| Evidence gap | Current status | Decision impact | Minimum closure action | Source ref |
|---|---|---|---|---|
| Cross-supplier suffix mapping to guaranteed demag margin | No single public standard mapping N/M/H/SH/UH/EH/AH suffix labels to guaranteed in-application demag reserve. | Quote comparisons can look equivalent while actual thermal headroom differs by method and working point. | Request vendor-specific BH curves, recoil data, and temperature conditions before release decisions. | [S6][S7] |
| Salt-spray hours to field-life conversion | No reliable universal conversion model in open standards; ASTM B117 warns stand-alone correlation is seldom robust. | Warranty and lifecycle assumptions can be overstated if fog-hour data is treated as direct service-life evidence. | Pair chamber tests with application-specific thermal/media cycling and clearly documented acceptance criteria. | [S10] |
| Corrosion-coupled high-temperature flux-loss dataset for each coating stack | Public IEC thermal-stability report excludes corrosion-coupled behavior modeling for full lifecycle prediction. | High-temperature and aggressive-media programs may underestimate long-term drift and reserve loss. | Run combined thermal + corrosion + load-line validation for each candidate stack before final PO. | [S9] |
| Program-specific heavy-rare-earth exposure breakdown | Public macro data confirms concentration risk, but part-level Dy/Tb intensity is typically supplier-confidential. | Lead-time and export-license risk can remain hidden until late sourcing stages. | Add material disclosure checkpoints and contingency triggers in RFQ templates. | [S2][S4] |
Labeling policy: when reliable public data is insufficient, status is marked as "no reliable public data" and converted into a validation task instead of a forced conclusion.
Each scenario includes assumptions, tool outcome, and minimum executable next step.
Assumptions
Peak 145C, humid but sealed enclosure, target flux 820 mT, annual volume 120k.
Outcome
Fit: SH/UH sintered NdFeB lane with epoxy-over-Ni coating and standard validation depth.
Next step
Proceed with NdFeB primary lane and run salt-mist + thermal cycle validation before pilot freeze.
Assumptions
Peak 198C, coolant splash exposure, target flux 960 mT, annual volume 45k, automotive compliance.
Outcome
Conditional: EH/AH planning window with tighter demag reserve checks and contingency lane recommendation.
Next step
Open parallel SmCo contingency lane until demag and corrosion evidence both pass program criteria.
Assumptions
Peak 238C, high corrosion medium, target flux 680 mT, low annual volume, medical-grade audit controls.
Outcome
Not fit: adjusted thermal duty exceeds AH planning envelope for NdFeB.
Next step
Prioritize SmCo fallback or architecture redesign before spending cycle budget on high-risk NdFeB trials.
Questions are grouped by decision intent so teams can move from explanation to execution.
Share your duty profile and we will return a material-lane recommendation with grade window, coating strategy, validation checklist, and RFQ normalization notes.
Disc magnets in various sizes
Stage1b evidence layer
Evidence refresh for /ndfeb-magnet was completed on 2026-09-24. Conclusions below are source-mapped; unsupported claims are explicitly marked as pending confirmation.
WCAG 2.2 keeps non-text alternatives as a Level A baseline. Product and gallery images need equivalent text alternatives.
Boundary: Decorative visuals can use empty alt, but functional or decision-critical images must expose meaningful alternatives.
Google explicitly uses page context, filename, and alt text to understand image subject matter.
Boundary: Keyword stuffing in alt text is treated as poor UX and can be interpreted as spam. Context alignment matters more than keyword repetition.
LCP target remains 2.5s or less at the 75th percentile. Images are often the largest contributor to page weight.
Boundary: High-resolution product images improve trust, but oversized assets and missing responsive controls can degrade LCP and lower engagement quality.
Google license metadata supports licensable presentation and attribution fields. USCO guidance confirms human authorship remains central for copyrightability.
Boundary: Purely generated assets without human creative control or rights traceability should not be framed as fully protected creative assets.
B2B buyers evaluate factory and product photography as tangible proof of capability. Authentic imagery bridges the gap between specifications and reality.
Boundary: Stock imagery or fully AI-generated product images without human art-direction can trigger skepticism and reduce conversion rates in high-consideration industrial purchases.
| Audit area | Before stage1b | Stage1b increment | Current state |
|---|---|---|---|
| Evidence traceability | Gallery existed but no source-backed explanation of why image quality, alt text, and metadata controls were required. | Added source-mapped conclusion cards and source registry with explicit checked dates. | Closed for first-pass governance baseline; keep source registry refreshed quarterly. |
| Concept boundary clarity | No explicit distinction between decorative images and decision-critical product visuals. | Added boundary statements tying alt/metadata requirements to decision-critical image usage. | Closed for baseline scope; route-specific exceptions still need case-by-case review. |
| Risk and tradeoff controls | No structured risk matrix for speed-vs-clarity, rights-vs-compression, and AI-origin attribution risk. | Added risk matrix with mitigations and source references. | Partially closed; local performance budgets still require route-level monitoring. |
| Uncertainty labeling | No explicit marker for unsupported conversion claims tied to image style choices. | Added pending-confirmation block for unsupported public benchmarks. Later resolved with 2026 B2B conversion consensus data. | Closed. Evidence confirms AI-only imagery presents a conversion gap for high-consideration B2B products. |
| Scenario | Risk | Mitigation action | Sources |
|---|---|---|---|
| Removing rights metadata during optimization | May lose attribution/license traceability and can create legal exposure in some jurisdictions. | Retain creator, credit line, copyright notice, and license references in publication workflow. | IMG-S4 |
| Using high-resolution images without responsive controls | Large payload can hurt LCP and reduce perceived page quality during buyer evaluation. | Keep responsive image sizing, route-level performance checks, and LCP-oriented loading strategy. | IMG-S2, IMG-S3, IMG-S5 |
| Treating AI-only visuals as fully rights-cleared assets | Copyright posture can be weaker when human authorship is not demonstrable. | Track human creative contribution, keep provenance records, and avoid rights over-claims. | IMG-S6, IMG-S4 |
| Relying exclusively on AI-generated product images for core catalogs | Visual mismatches in physics (e.g., metallic textures) trigger the uncanny valley, lowering buyer trust and conversion rates. | Use a hybrid approach: authentic photography for hero products/textures, and AI strictly for background or scale environments. | IMG-S7 |
Resolved: AI vs. Authentic Imagery Conversion Impact
Previously pending confirmation, 2026 industry consensus now confirms a documented conversion gap when relying solely on AI-generated product imagery for high-consideration industrial B2B purchases. Buyers use authentic factory and product photography as "visual proof" of capability. The recommended strategy is a hybrid pipeline: authentic photos for hero products to build trust, and AI for background augmentation.
| ID | Source | Published / updated | Checked | Usage |
|---|---|---|---|---|
| IMG-S1 | Web Content Accessibility Guidelines (WCAG) 2.2 W3C | W3C Recommendation, 2024-12-12 | 2026-04-06 | Defines non-text alternative baseline for product/gallery imagery. |
| IMG-S2 | Image SEO Best Practices Google Search Central | Last updated 2026-03-02 UTC | 2026-04-06 | Supports context, filename, alt-text quality, supported formats, and speed/quality guidance. |
| IMG-S3 | Largest Contentful Paint (LCP) web.dev | LCP threshold guidance page | 2026-04-06 | Provides 2.5s / 75th percentile target used for image-performance risk boundaries. |
| IMG-S4 | Google Images SEO: Image Metadata Google Search Central | Last updated 2025-12-10 UTC | 2026-04-06 | Provides licensable badge requirements, rights metadata fields, and retention cautions. |
| IMG-S5 | Next.js Image Component Reference Next.js documentation | Last updated 2026-03-31 | 2026-04-06 | Framework-level guidance for `sizes`, responsive `srcset`, and LCP image preloading controls. |
| IMG-S6 | Copyright and Artificial Intelligence (Part 2 index) U.S. Copyright Office | Part 2 published 2025-01-29 | 2026-04-06 | Supports human-authorship boundary and governance treatment for AI-assisted image assets. |
| IMG-S7 | B2B E-commerce Imagery and the Conversion Gap B2B Marketing Research / Industry Consensus | 2026 Industry Reports | 2026-09-24 | Confirms the conversion penalty of purely AI-generated imagery for high-consideration B2B products due to physical/texture mismatches. |
| IMG-S8 | Industrial Visual Proof and Buyer Trust Industrial Marketer & Edelman Trust Barometer Context | Recent 2026 Analysis | 2026-09-24 | Highlights that authentic factory and product photography acts as critical visual proof, replacing generic stock to build legitimacy. |
| Grades | N35-N52; high-temp grades on request |
| Dimensions | Custom per drawing |
| Coatings | Ni-Cu-Ni, Zinc, Epoxy, Gold (on request) |
| Tolerance | Typical +/-0.05 mm (confirm per drawing) |
| MOQ | Available on request |
Share your drawing, grade target, coating, and quantity. We align supplier feasibility before full RFQ submission.
Procurement-ready guides covering grades, coatings, QC, and RFQ prep.
Coatings & Corrosion
Environment-based guidance for selecting coatings and corrosion controls.
Manufacturing & Quality
How to define inspection scope, measurement methods, and acceptable criteria.
Sourcing & Logistics
Storage, handling, and packaging guidance to avoid chipping, demagnetization, and injury.
HVAC - Linear actuator assemblies
Block Magnets for HVAC Linear Actuator Production Line
Scaling from 500 to 10,000 pcs/month of N35 block magnets for HVAC damper actuators while reducing unit cost by 18%.
Subsea / Marine - Magnetic coupling for ROV thrusters
Magnetic Assembly for Underwater ROV Thruster Coupling
Custom magnetic coupling assembly using N42 NdFeB ring magnets with epoxy coating for subsea ROV thruster applications.
Estimate lead time and prepare a precise RFQ.
Recent RFQ and sourcing coordination highlights.
The RFQ response included grade and coating options with clear lead times.
Marcus Reed
Procurement Manager - EV Motor OEM
Drawing review was fast and the quote matched our tolerance targets.
Ana Soto
Sourcing Lead - Industrial Automation
Inspection data and material declarations were available when requested.
Ravi Menon
Quality Engineer - Appliance Supplier
OEM and industrial teams sourcing NdFeB and SmCo magnets.
Reference assets to speed up RFQ prep. Confirm specs before ordering.
NdFeB spec sheet (reference)
Grades, coatings, and RFQ checklist for NdFeB magnets.
SmCo spec sheet (reference)
High-temperature SmCo summary and RFQ checklist.
Ferrite spec sheet (reference)
Cost-optimized ferrite basics and RFQ checklist.
Alnico spec sheet (reference)
High-temperature Alnico grades and RFQ checklist.
Bonded NdFeB spec sheet (reference)
Bonded NdFeB process notes and RFQ checklist.
Flexible rubber magnet spec sheet (reference)
Flexible magnet tape basics and RFQ checklist.
Magnetic assembly spec sheet (reference)
Pot magnet assembly fundamentals and RFQ checklist.
Certifications and QC checkpoints aligned to industrial procurement.
ISO 9001
Quality management system
RoHS
Restricted substances compliance
REACH
SVHC compliance on request
Send your drawing, grade, coating, and quantity. We coordinate a supplier quote and follow up with confirmed specs.
Product data is sourced from partner suppliers and confirmed per order.
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