SmCo5 — Properties & Data | MatWorld

SmCo5

Name: SmCo5
Brand: MatWorld

metal

· SmCo5

SmCo5 is a samarium-cobalt permanent magnet alloy that belongs to the rare-earth magnet family, valued for its exceptional magnetic strength and high-temperature stability. It is widely used in aerospace, defense, and industrial applications where reliable performance in extreme thermal environments is critical, such as aircraft engines, satellite systems, and high-speed motors. SmCo5 offers superior performance compared to ferrite magnets and was historically important before neodymium magnets became dominant; it remains the preferred choice when operating temperatures exceed the capabilities of NdFeB magnets or when magnetic field stability over decades is essential.

aerospace turbine magnetssatellite actuatorshigh-temperature motorsmilitary guidance systemsoil well logging toolsprecision magnetic couplings

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	21,989.2	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3300	-	DFT · OptB88vdW
Shear Modulus(G)	8,796.5	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3195	lb/in³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.000	eV	DFT · OptB88vdW
↳	0.000	eV	DFT · TBmBJ
Magnetic Moment(μB)	6.817	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000406	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000407	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	9.293	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	9.610	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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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.08989	eV/atom	DFT · OptB88vdW
↳	-0.1264	eV/atom	Measured

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.

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.

SmCo5

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

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