Dy — Properties & Data | MatWorld

Dy

metal

· JVASP-14826· Dy

Dysprosium (Dy) is a rare-earth lanthanide metal known for its exceptional magnetic properties and high melting point, making it valuable in specialized high-performance applications. It is primarily used in permanent magnets (particularly neodymium-dysprosium alloys), nuclear control rods, and high-temperature structural applications where magnetic strength retention and thermal stability are critical. Engineers select dysprosium-containing materials when standard ferromagnetic alloys cannot meet performance requirements at elevated temperatures or when enhanced coercivity is needed to prevent demagnetization in demanding environments.

permanent magnetsmotor and generator applicationsnuclear reactor controlhigh-temperature magnetic devicesaerospace propulsion systemsspecialized metallurgical alloys

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	6,236.6	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2600	-	DFT · OptB88vdW
Shear Modulus(G)	3,623	ksi	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3173	lb/in³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	0.01266	eV/atom	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

Export Control

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

Dy

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control