HYMU 80 Shielding Alloy

HYMU 80 Shielding Alloys

Hymu 80 is an 80% nickel-iron-molybdenum alloy with extremely high initial and maximum permeability, very low coercive force and minimum hysteresis loss. This makes Hymu 80 specifically well-suited for magnetic shielding applications.

Hymu 80 is primarily used to protect electrical components from stray magnetic fields. It is also used in transformer cores, tape wound toroids and laminations where compactness and weight factors are important.

Don’t settle for inferior materials and too-good-to-be-true prices. Just like anything else, you get what you pay for. National Electronic Alloys is home to one of the industry’s largest in-stock inventories of premium super-alloy products, and all of our metal alloys, including Hymu 80, are DFARS compliant.


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"


MUMETAL 2 SHIELDING ALLOY
NOMINAL DATA SHEET

CHEMICAL COMPOSITION
MAGNETIC PROPERTIES
Carbon: 0.05 max
Hardness
Manganese: 1.8 max
Anealed: Rockwell B 75 max
Silicon: 0.50 max
 
Phosphorus: 0.02 max
DC Magnetic Properties
Sulfur: 0.02 max
B=100 Gausses: 15,000
Chromium: 3.0 max
B=2500 Gausses: 52,000
Nickel: 75.0 - 77.0
 
Copper: 4.0 - 6.0
Electrical Resistivity
Iron: Remainder
Ohms circular mil/foot (+/- 5%): 336


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



MU Metal 2 Coil
MIL N 14411C COMP 2
 
.020
SLIT TO
0.25
YOUR
.030
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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