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High Performance Powdered Metal (PM) Soft Magnetic Alloys

Soft Magnetic Alloy Powder MetallurgyIron
Silicon Iron
Phosphorous Iron
Iron Nickel

Material

PSM Code

Density G/CC 

Induction BMAX-15 Oe K-Gauss (G)

Remanence Br K-Gauss (G)

Maximum Permeability K-Gauss/
OERSTED

Coercive Force Hc OERSTED

Ultimate Tensile Strength PSI (A)

Elongation % 

Equivalent ASTM Spec

Application

Iron

F-241-S1

6.8/7.0

11.2

9.7

5.3

2.0

29,000

7

B310-70, TYPE III, CLASS A

DC magnetic applications such as pole pieces, cores, armatures, generator rotors and stator cores.

F-241-S2

7.0/7.2

12.6

10.2

5.3

1.7

34,000

11

B310-70, TYPE IV, CLASS A

F-241-T

7.2/7.5

13.0

11.8

5.3

1.7

40,000

19

B310-70, TYPE V, CLASS A

Silicon Iron

FS-1602

7.1/7.3

13.0

11.4

8.8

1.1

48,900

5

N/A

DC magnetic applications such as armatures, relays, solenoids, pole pieces and cores. Possible AC uses.

FS-1601

7.1/7.3

13.0

11.8

7.8

1.2

57,800 

10

N/A

FS-1603

7.0/7.3

11.9

5.1

9.1

1.1

65,000

9.5

N/A

Phosphorous Iron

FP-1650-S

7.0/7.2

12.7

10.1

3.7

1.2

51,200

12

N/A

For applications requiring high yield strength and toughness.
Magnetic properties superior to iron, but slightly inferior to silicon iron.

Iron Nickel

FN-252-S

7.0/7.2

10.0

7.0

13.3

0.4

43,500

10

N/A

Very low coercive force and high permeability.
Excellent for shielding and switching applications.

NOTES:
A - Mechanical property data represents average
     values derived from laboratory specimens
     produced under production conditions.
B - Elongation is given as inch/inch in one inch
     (1") gauge length.
C - Additional data is being developed.
D - Yield and ultimate tensile strength values
      are approximately the same in the heat
      treated condition.
E - Impact strength values are from unnotched Charpy
     Impact specimens.
F - Apparent hardness is measured directly using the
     Rockwell scales indicated. The value is always lower
     than the actual metal particle hardness as measured
     by the microhardness tester because of the porosity
     in the structure.
G - Magnetic induction, Bmax, and remanence, Br, are
     derived from standard BH curves with a 15 Oersted
     magnetizing force. Higher Bmax values are obtained
     at higher magnetizing forces.