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Ceramic

Alnico

Samarium Cobalt

Bonded

NdFeB
  Samarium Magnets
 

 

  • Large selection of standard sizes in Disc and Rectangle.

  • Available in both SmCo5 and Sm2Co17 produced according to MMPA.

  • Size and Shape will be produced according to Customer's drawings.

Factory Specifics

Factory #1 Factory Overview Pictures

• Specializes in ALNICO and Samarium Cobalt.

• 140K square meter production area

• Production capability to 3,000 tons / yr.

• Largest producer of ALNICO magnets in China

• Production machinery imported from Germany, Japan, and the U.S.

• ISO 9002 Cert. (QS9000 by early 2003)

 

  

Chemical Composition & Magnetic Properties

MMPA Brief Designation IEC Code Reference Chemical Composition* Magnetic Properties (nominal)
Alloys Max Energy Product (BH) max (MGO) Residual Induction Br(kilogauss) Coercive Force Hc(oersteds) Intrinsic Coercive Force Hci(oersteds)
 5/16  R5-1  SmCo5 5 4700  4500 16000
 14/14  R5-1  SmCo5 14 7500 7000 14000
16/18  R5-1  SmCo5 16 8300 7500 18000
18/20  R5-1  SmCo5 18 8700 8000 20000
20/15  R5-1  SmCo5 20 9000 8500 15000
22/15  R5-1  SmCo5 22 9500 9000 15000
 22/12 R5-2  SmCo17  22 9600 8400 12000
24/7  R5-2  SmCo17 24 10000 6000 7000
24/18  R5-2  SmCo17 24 10200 9200 18000
26/11  R5-2  SmCo17 26 10500 9000 11000
28/7  R5-2  SmCo17 28 10900 6500 7000

Physical and Thermal Properties
Sintered Samarium Cobalt Magnets

  1-5 Alloys 2-17 Alloys
Mechanical Properties:
Modulus elasticity 23 x 10 to the 6th power PSI 17 x 10 to the 6th power PSI
Ultimate tensile strength 6 x 10 to the 3rd power PSI 5 x 10 to the 3rd power PSI
   
Physical Properties:
Density 8.2 g/cc 8.4 g/cc
Coefficient of thermal expansion    
Perpendicular to orientation 13 x 10 to the -6th power/°C 11 x 10 to the -6th power/°C
Parallel to orientation 6 x 10 to the -6th power/°C 8 x 10 to the -6th power/°C
Electrical resistivity 53µ ohm cm. 86µ ohm cm.
Magnetic Properties:
Curie temperature 750°C 825°C
Reversible temperature coefficient    
of residual induction (-100°C to + 100°C) -043%/ C -03%/ C
Recoil permeability 1.05 1.05
Max. Service temperature* 250°C 300°C


Design by Joel Alvarez

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