Mumetal, Nickel Permalloy Foil, For Magnetic Field Shielding, 0.1T-i , 30×90 cm

Description

Mumetal, Nikel Permalloy, Magnetic shielding foil, Sheet
Application
AC
Electromagnetic
Power line , Motor, Coil
Very effective
DC
Geo-magnetic field
Earth
Very effective
Magnet
No effective
(
Use Nickel 48% mumetal, 0.35 T
)
Dimensions
Size
30 cm × 90 cm  (11.8" × 35.4 ")
Thickness
0.1mm  (0.00
39
")
※
Double-side insulation coating
Specification
Main Composition
Nikel 80%, Molybdenum 5%, Iron 14%
Specific Gravity
8.74
Thermal Expansion
12.9℃x 10
Tensile Strength
135PS x 10
Yield Strength
21PS x 10
Typical Hardness Ann. (Rockwell B)
58
Elongation (/ 2inch)
38%
Melting Point
2650°F / 1454℃
Thermal Conductivity
240Btu·inch/ ft/ hr/
최소동작온도
4
Electrical Resistivity
620μΩ·mm
Saturation Induction
7,700Gauss
initial permeability
30,000
B-40 Permeability
70,000
B-200 Permeability
90,000
Maximum Permeability
400,000
Coercive Force
max. 0.02
Curie Temp
860°F / 460℃
Annealed at
1066℃
for four hours
* Demonstration --- Shielding the Neodymium magnetic field using our mumetal (with
0.35mm thickness
)
Overview
Magnet ── Neodymium magnet (Diameter 2.5 cm, Thickness 5 mm)
Gaussmeter ── F.W.Bell 6010 model
The gap between Magnet and Probe ── 5mm
Mumetal thickness ──
0.35mm (0.35T)
, Total 8 layers
Method ── Put our mumetal with 1 layer to 8 layers between magnet and sensor.
Mumetal
Total mumetal thicness
(mm)
Measured value
(G=gauss)
Neodymium magnet ≒ 2000G
Ferrite magnet ≒ 300G
For pefect shielding of magnetic field of Neodymium magnet, Use
10 layers
of our
0.35mm thickness
mumetal.
0
1229 G
1 layer
0.35
1102 G
2 layers
0.7
977 G
3 layers
1.05
844 G
4 layers
1.4
725 G
5 layers
1.75
590 G
6 layers
2.1
434 G
7 layers
2.45
267 G
8 layers
2.8
131
G
* Demonstration --- Shielding the Geo-magnetic field using our mumetal (with
0.1mm thickness
)
No mumetal
Put geo-magnetic sensor on our mumetal
Wrap geo-magnetic sensor with our mumetal
·
Geo-magnetic field
Measured value
X-axis
42.5 mG
2.3 mG
0.3 G
Y-axis
282.1 mG
32.5 mG
11.7 mG
Z-axis
403.1 mG
358.2 mG
7.1 mG
Max value
493.8 mG
359.7 mG
13.7 mG
Result
With
0.1mm thickness
mumetal, Max. 97% shielding rate.
Our mu-metal items on eBay.
Size (cm
,
inc
h
)
Coating
Price
Order
30×
15
30×30
30×45
30×90
30×100
No
One side adhesive
Double side insulation
insulation & other side adhesive
$
11.8"×
5.9"
11.8"×
11.8"
11.8"×
17.7 "
11.8"×
35.4 "
11.8"×
39.4"
Thickness
0.1 T
◇
◇
30
Go
◇
◇
45
Go
◇
◇
84
Go
◇
◇
85
Go
◇
◇
85
Go
◇
◇
87
Go
◇
◇
88
Go
0.2 T
◇
◇
40
Go
◇
◇
120
Go
0.35 T
◇
◇
35
Go
◇
◇
75
Go
◇
◇
95
Go
◇
◇
180
Go
◇
◇
190
Go
1
T
◇
◇
77
Go
◇
◇
150
Go
◇
◇
190
◇
◇
380
Thickness
0.1 T = 0.1 mm = 0.0039 inch
0.2 T = 0.2 mm = 0.0079 inch
0.35 T = 0.35 mm = 0.0138 inch
1 T = 1 mm = 0
.039 inch
Size
Coating
Price
Order
cm
47×30
47
×
5
0
47
×
100
Double side insulation
$
inch
18.5×
19.7
Thickness
0.12 T
◇
◇
4
0
◇
◇
60
Go
◇
◇
120
Size
Coating
Price
Order
cm
23
×
15
23
×30
23
×45
23
×90
23
×100
No
$
inch
9.25×
11.8
9.25×
17
.
7
9.25×
39.4
Thickness
0.35 T
◇
◇
16
◇
◇
32
Go
◇
◇
45
Go
◇
◇
90
◇
◇
95
Go
Shielding
distinction
(
Nickel
80% vs. Nickel 48
%)
Electrical Resistivity
Maximum Permeability
Saturation flux density
Coercivity
Nickel 80%
620 μΩ·mm
400,000
0.75
0.008~0.02
Nickel 48%
48
0 μΩ·mm
100,000
1.5
0.1

Nic
kel 48% mumetal is more suitable for magnetic shielding of
neodymium magnets
.
(
25% better
for blocking effect)