TECHNICAL DATA
co-netic® ALLOY
SPIRA-SHIELD
Flexible
Conduit
|
Made of
Co-NETIC®
Alloy
|
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MAGNETIC DATA
&
SPECIFICATIONS
|
Co-NETIC® AA PERFECTION ANNEALED
|
Co-NETIC®
STRESS
ANNEALED*
|
Co-NETIC® B
STRESS
ANNEALED*
|
NETIC® S3-6 STRESS
ANNEALED*
|
|
Specific
Gravity
|
8.74
|
8.74
|
8.18
|
7.86
|
|
Coefficient
of Expansion,
per °C
x 10-6
|
12.6
|
12.6
|
8.3
|
13.7
|
|
Tensile
Strength, PSI x 103
|
64
|
85
|
80
|
42
|
|
Yield
Strength, PSI x 103
|
18.5
|
33
|
27
|
27
|
|
Modulus
of Elasticity,
PSI x
106
|
25
|
30
|
24
|
30
|
|
Hardness,
Rockwell B
|
50 Ref.
|
70 Ref.
|
68 Ref.
|
50 Ref.
|
|
Elongation
in 2 inches
|
27%
|
32%
|
32%
|
38%
|
|
Melting
Point
|
2650°F/ 1454°C
|
2650°F/ 1454°C
|
2600°F/ 1427°C
|
2790°F/ 1532°C
|
|
Thermal
Conductivity
(cal
/sec /cm2/cm / °c ) at 20°
|
.138
|
.138
|
.037
|
.118
|
|
Electrical
Resistivity
Micro-ohm-centimeters
|
55
|
55
|
48
|
11
|
|
Saturation
Induction (Gauss)
|
8,000
|
After required Perfection Annealing is done, magnetic properties are the
same as AA Perfection Annealed Alloy.
|
15,000
|
21,400
|
|
Permeability
at 40 B
|
30,000
|
8,000
|
200
|
|
Initial
Permeability
|
75,000
|
12,000
|
300
|
|
Permeability
at 200 B
|
135,000
|
30,000
|
500
|
|
Maximum
Permeability
|
450,000
|
150,000
|
4,000
|
|
Induction At µ Max.
|
3,000
|
7,000
|
8,000
|
|
Coercive
Force Hc, Oersteds
|
.015
|
.05
|
1.0
|
|
Curie
Temperature
|
850°F/ 454°C
|
850°F/ 454°C
|
840°F/449°C
|
1420°F/ 770°C
|
|
Minimum
Operating Temperature
|
4°K
|
4°K
|
4°K
|
4°K
|
|
Note: Magnetic data is for sheet material measured in a D.C. field.
* Typically,
Stress Annealed material must be annealed after fabrication for optimum
magnetic shielding properties.
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BH Curve
|
BH Curve
Over several decades, Magnetic Shield Corporation has performed hundreds of laboratory tests and calculated thousands of shielding equations - all in an effort to continually validate the theoretical application of magnetic interference control in both AC and DC applications, and to aid engineers in shield design. Theory behind the B-H curve is well documented, and it remains an effective reference tool.
By use of the B-H curve, our shielding alloys MuMETAL®, Co-NETIC® and NETIC® have been developed and refined to offer the most effective shielding characteristicsfor a variety of applications and markets. The B-H curve (left)
depicts our materials' capabilities to attenuate and absorb a wide range of magnetic fields. |
CHEMICAL COMPOSITION:
MuMETAL® Chemical Composition % In Weight*
Nickel (Ni) 80-81%
Molybdenum (Mo) 4.5-6%
Silicon (Si) 0.05-0.4%
Manganese (Mn) 0-0.5%
Carbon (C) 0.01%
Iron (Fe) Balance
*Composition may vary by production lot. |
TYPICAL MAGNETIC PROPERTIES*
DC µ @ 40 gauss 80,000
DC µ @ 100 gauss 105,000
DC µ maximum 350,000
DC Hc 0.0005 Oe
DC Br (gauss) 4,000
AC 60Hz @ 40 gauss 65,000
*Data are typical of .014" [0.36mm] annealed sample and should be not be construed
as maximum or minimum values for specification or final design. Data for each material
thickness and/or lot may vary. |
MATERIAL PROPERTIES:
TYPICAL ANNEALED PROPERTIES
0.2% Yield Strength 49ksi (338 MPa)
Density 0.316 lb/in³ (8.7 g/cm³)
Tensile Strength 99 ksi (682 MPa)
Electrical Resistivity 60 micro-ohm cm
Elongation 32% in 2" (51 mm)
Grain Size ASTM 7 or finer
Hardness 15T 85 |
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