ABOUT SAMARIUM COBALT

Samarium cobalt is a rare earth material made by a powder metallurgical process. Manufactured using binders such as epoxy, samarium cobalt magnets are inherently very brittle. Users are discouraged from grinding material because dry remnants are a fire hazard. Some of the advantages of using samarium cobalt is that it provides excellent temperature stability and as well as excellent corrosion resistance. Because of this, typically coating or plating is not required. Samarium cobalt is excellent for operating in harsh environments were it will be exposed to the elements as well as high operating temperatures.

SAMARIUM COBALT

SAMARIUM COBALT

Samarium cobalt excels in harsh environments – common applications include marine, military, and aerospace.

SAMARIUM COBALT GRADES

MaterialGradeEnergy Product 

(BH)max

Residual Induction 

Br(min-max)

Coercive Force

HCb(min-max)

Intrinsic Coercive Force

Hcj(min-max)

Density

D

Rev. Temp Coeff 

a(Br)

Curie Temp 

TC

Max Working Temp 

Tw

KJ/m^3MGsOeTkGsKA/mKOeKA/mKOeg/cm^3%/°C°C°C
SmCo5XG16120~14315~180.77-0.867.7-8.6613-7167.7-9.0≥1194≥15.08.3-0.04≥740250
XG16H120~14315~180.77-0.867.7-8.6613-7167.7-9.0≥1592≥20.0
XG18135~15917~200.81~0.928.1~9.2637~7568.0~9.5≥1194≥15.0
XG18H135~15917~200.81~0.928.1~9.2637~7568.0~9.5≥1592≥20.0
XG20151~17519~220.85~0.958.5~9.5637~7568.0~9.5≥1194≥15.0
XG20H151~17519~220.85~0.958.5~9.5637~7568.0~9.5≥1592≥20.0
XG22167~19121~240.89~1.08.9~10.0661~7728.3~9.7≥1194≥15.0
XG22H167~19121~240.89~1.08.9~10.0661~7728.3~9.7≥1592≥20.0
Sm2Co17XGS24M175~19922~250.92~1.049.2~10.4318~7884.0~9.9398~11945.0~15.08.4-0.03≥850350
XGS24175~19922~250.92~1.049.2~10.4661~7968.3~10.01194~199015.0~25.0
XGS24H175~19922~250.92~1.049.2~10.4661~8048.3~10.1> 1990> 25.0
XGS26M191~21524~271.0~1.0610.0~10.6318~7964.0~10.0398~11945.0~15.0
XGS26191~21524~271.0~1.0610.0~10.6677~8208.5~10.31194~199015.0~25.0
XGS26H191~21524~271.0~1.0610.0~10.6677~8208.5~10.3> 1990> 25.0
XGS28M207~23126~291.04~1.1010.4~11.0318~8044.0~10.1398~11945.0~15.0
XGS28207~23126~291.04~1.1010.4~11.0677~8208.5~10.31194~199015.0~25.0
XGS28H207~23126~291.04~1.1010.4~11.0677~8208.5~10.3> 1990> 25.0
XGS30M223~24728~311.07~1.1210.7~11.2318~8044.0~10.1398~11945.0~15.0
XGS30223~24728~311.07~1.1210.7~11.2700~8288.8~10.41194~199015.0~25.0
XGS30H223~24728~311.07~1.1210.7~11.2700~8288.8~10.4> 1990> 25.0
XGS32M231~25529~321.09~1.1510.9~11.5318~8044.0~10.1398~9555.0~12.0
XGS32231~25529~321.09~1.1510.9~11.5716~8369.0~10.5> 955> 12.0
Low Temp. Coeff.
Sm2Co17
XGS22LT159~18320~230.90~0.999.0~9.9677~7568.5~9.5≥1194≥15.08.4-0.015>850350
XGS24LT175~19922~250.92~1.029.2~10.2677~7568.5~9.5≥1194≥15.0