HYMU 80 Shielding Alloy

HYMU 80 Shielding Alloys

HyMu 80 is a magnetic shielding alloy that’s comprised of a range of nickel iron alloys. It is 80 percent nickel-iron-molybdeum and its main characteristic includes high permeability. It’s useful for shielding against static or low frequency magnetic fields.

At NE Alloys, a lot of our customers inquire about HyMu 80 for use in:

  • Transformer cores.
  • Telephone and recording devices.
  • Protecting sensitive medical equipment in an MRI facility.
  • Increasing the quality of home theatre systems.
  • Protecting electrical components from stray magnetic fields.
  • Tape wound toroids and lamentations where compactness and weight factors are important.


HYMU 80 SHIELDING ALLOY
also known as Permalloy, HY MU 80, MAG 7904, MIL N 14411 C, COMP. 1 OR ASTM A753-78
NOMINAL DATA SHEET


CHEMICAL COMPOSITION
MAGNETIC PROPERTIES
80 % Ni
"HY MU 80" has a minimum DC permeability
5 % Mo
of 80,000 at a flux density of 40 gauss when
.5 % Si
heat treated by the recommended procedure
.02 % Cu
and test in accordance with ASTM 596
Balance Fe  


PHYSICAL PROPERTIES(ANNEALED CONDITION)
Specific Gravity - 8.7 g/cm
Curie Temperature - 830 F(410 C)
Electrical Resistivity, 349 ohm circ mil/foot 0.55 ohm mm2/m
Density,lb/cu.in. - .316
THERMAL CONDUCTIVITY - 134 Btu-inch/ft hour degree F 0.32 W/cm degree C
Coefficient of Thermal Expansion, in./in./ F x 10(-******)
7.2 in/in/degree F x 10-6 between 70 & 400 F
13 cm/cm/degree C x 10-6 between 30 & 204 C

NOMINAL MECHANICAL PROPERTIES(ANNEALED CONDITION)
86 max (HR15T) or HV160
32,000 psi yield
84,000 psi tensile
40%< elongation in 2"


HY MU 80 SHIELDING ALLOY
HY-MU 80


SHEET
TK
Width
Length
.004
8/12
36/72
.006
8/12
36/72
.010
12"
36/72
.014
16"
36/72
.020
24
36/72
.025
24
.030
24
.050
24
.062
24




Etching Grade
.004
.006
.010
.014
.020
.025



Coil
TK
Width
.004
SLIT
.006
TO
.010
YOUR
.014
WIDTH




HyMu 80 Round Bar
MIL N 14411C COMP 1
 
.130" Diameter x 135"
.218" Diameter x 72"
.250" Diameter x 144"
.380" Diameter x 135"
.511" Diameter x 135"
.760" Diameter x 135"
1.062" Diameter x 135"
1.535" Diameter x 135"
1.875" Diameter x 135"
1.929" Diameter x 135"
2.28" Diameter x 135"
Special Diameter Sizes Upon Request
Alloy 49 (Comp 3) Also Available From Stock




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