Pm

metal

· JVASP-103289· Pm

Promethium (Pm) is a synthetic rare-earth metal produced artificially through nuclear fission, with no stable isotopes occurring naturally. It has been explored primarily in research and specialized nuclear applications, particularly in self-luminous devices and radioisotope power sources, though its radioactive nature and limited availability have restricted widespread industrial adoption compared to other rare-earth elements.

radioisotope power sourcesself-luminous materials researchnuclear medicine (experimental)specialized instrumentationacademic/research applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	5,463.6	ksi	—
Poisson's Ratio(ν)	0.2800	-	—
Shear Modulus(G)	3,008.1	ksi	—

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2615	lb/in³	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.000	eV	—
Magnetic Moment(μB)	0.000	µB	—

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	—
Formation Energy(ΔHf)	0.00780	eV/atom	—

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

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.

Pm

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control