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Nd · Pr · Dy · Tb · Sm

Understand the role of rare earths in NdFeB and SmCo magnets

Learn what roles neodymium, praseodymium, dysprosium, terbium and samarium play in permanent magnets and what information is important for an enquiry.

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Use the magnet material to distinguish NdFeB from SmCoStart with the magnet materialDistinguish between NdFeB, SmCo, coatings and composite materials.Rare earths as constituents of permanent magnetsFive magnet elementsUnderstand Nd, Pr, Dy, Tb and Sm within the material system.Documented magnet batch with nameplateIdentify the batchGather photographs, nameplate details, origin information and supporting documents.Segment magnets for a material enquirySubmit your lot for assessmentProvide the net magnet mass, shape and condition in sufficient detail for assessment.

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  • Material-specific assessment
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Dy · temperature-stable NdFeB systems

Dysprosium in permanent magnets

Dysprosium may be used to improve coercivity at higher operating temperatures. The magnet grade and installation location alone are not analytical evidence of a specific proportion.

Role in the magnet

Understand dysprosium’s role in the material system

A specific proportion cannot be inferred from appearance, application or magnet grade.

01

Material system

temperature-stable NdFeB systems

02

Function

Dysprosium may be used to improve coercivity at higher operating temperatures. The magnet grade and installation location alone are not analytical evidence of a specific proportion.

03

Material boundary

Batch data or analytical results are required for a material assessment; this context page does not state a standard proportion.

04

Evidence

Batch documentation, manufacturer data or suitable analysis must relate to the specific lot.

05

Weight

Total magnet mass, assembly mass and the mass of the individual element are different quantities.

06

Purchase assessment

Form, origin, condition, net magnet mass and potential recovery route are assessed first.

Further information about the element

Dysprosium as a metal, oxide or compound

The external specialist link covers material forms, properties and element-specific enquiry routes.

Dysprosium specialist page ↗

Other specialist areas

Relevant ES Metall specialist pages

For more detailed information about selling, recycling, rare-earth materials and prices we pay, visit the relevant ES Metall specialist pages.