Cavities and Magnets Working Group Darin Kinion (LLNL) 4/26/2012.
SmCo Master 160204 - arnoldmagnetics · These are also referred to as Rare Earth or SmCo magnets....
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Transcript of SmCo Master 160204 - arnoldmagnetics · These are also referred to as Rare Earth or SmCo magnets....
Recoma® Sintered Samarium Cobalt Magnets Characteristic Units C // C
Reversible Temperature Coefficients (1)
of Induction, α(Br) %/ºC
of Coercivity, α(Hcj) %/ºC
Coefficient of Thermal Expansion (2) ∆L/L per ºCx10-6 11 13
Thermal Conductivity W/(m•K)
Specific Heat (3) J/(kg•K)
Max. Recommended Use Temperature ºC
Characteristic Units min. nominal Curie Temperature, Tc ºC
Gauss 11,700 11,900 psi
Tesla 1.170 1.190 MPa
Oersteds 10,810 11,060 psi
kA/m 860 880 MPa
Oersteds 21,000 23,000 Young's Modulus GPa
kA/m 1,710 1,800 Density Mg/m3
MGOe 32.0 33.3 Hardness, Vickers Hv
kJ/m3 255 265 Electrical Resistivity, • cm
Notes: (1) Coefficients measured between 20 and 200 ºC
(2) Between 20 and 200 ºC (3) Between 20 and 150 ºC
Notes The material data and demagnetization curves shown above represent typical properties that may vary due to product shape and size.Demagnetization curves show nominal Br and Hcj.Magnets can be supplied thermally stabilized or magnetically calibrated to customer specifications.Additional grades are available. Please contact the factory for information.
Ma
gn
eti
c P
rop
ert
ies
Br, Residual Induction
10
350
HcB, Coercivity
Oth
er
Pro
pe
rtie
s
Flexural Strength17,400
HcJ, Intrinsic Coercivity
120
Th
erm
al P
rop
ert
ies -0.035
-0.25
820
300
BHmax, Maximum Energy Product600
90
Recoma 35E
Compressive Strength116,000
800
140
8.3
These are also referred to as Rare Earth or SmCo magnets. The Recoma family of materials offer a combination of high magnetic output and excellent temperature stability. Please contact Arnold for additional grade information, application assistance and recommendations for protective coatings. Assemblies using these magnets can also be provided.
20°C
100°C150°C
200°C
250°C
300°C
350°C
0.0
0.2
0.4
0.6
0.8
1.0
1.2
-1600 -1400 -1200 -1000 -800 -600 -400 -200 0
Po
lari
zati
on
J
F
lux
Den
sity
B
Tesla
kA/m
321.510.75
0.5
0.3
0.1
Demagnetizing Force, H
Demagnetization Curves
kOe-20 -15 -10 -5 0
0
2
4
6
8
10
12
kG
1 kA/m = 12.566 Oe 1 kOe = 79.577 kA/m
5
Sintered Sm2Co17
Recoma 35E
μoH-B
Dimensions and shape of the magnet, in combination with required manufacturing processes, may cause the magnetic and physical characteristics to vary from typical values. Therefore, all data presented in this document are for general reference only and should not be relied upon to represent standard characteristics, nor are they guaranteed upon use. Arnold Magnetic Technologies reserves the right to change information in this document, including magnet performance standards, specifications, and characteristics without notice.
Rev. 160204a© Arnold Magnetic Technologies Corp. E-mail: [email protected]
www.arnoldmagnetics.com
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