Sm3Co — Properties & Data | MatWorld

Sm3Co

metal

· JVASP-37585· Sm3Co

Sm₃Co is a samarium-cobalt intermetallic compound belonging to the rare-earth permanent magnet family, specifically an early-generation SmCo magnet composition. This material is primarily used in high-temperature magnetic applications where exceptional magnetic stability and corrosion resistance are required, with particular value in aerospace, defense, and industrial equipment operating in extreme thermal or corrosive environments. Compared to modern Sm₂Co₁₇ variants and NdFeB magnets, Sm₃Co offers a favorable balance of magnetic performance and temperature stability, though it has largely been superseded by higher-performance rare-earth compositions in many new designs.

permanent magnetshigh-temperature motorsaerospace actuatorsmilitary/defense systemscorrosion-resistant magnetic componentsindustrial equipment magnets

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	8.001	kg/m³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.0000169	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.0000191	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	0.9467	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	1.220	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.1409	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.

Sm3Co

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control