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Technical Data Sheet - K1082


K1082 is a high performance, carbon based, filler material that has excellent thermal, conductive, and physical properties. It is used as the filler between magnets in assemblies, magnet systems, and magnet arrays. It is especially popular with rare-earth (Neodymium Iron Boron and Samarium Cobalt) magnet assemblies.

K1082 is superior to the conventional potting compounds since it can withstand very high shock impact and temperatures without changing its physical properties. The carbon base gives it extreme longevity. Since plasticizers are not used, the material properties do not change with time, temperature, or exposure to other harsh environments.

Typical Properties

Characteristic

Value

Units

Value

Units

Bulk Density

1.74

g/cm3

109

lb/ft3

Specific Resistance

6.9

µ-ohm-m

27

10-5 ohm-in

Flexural Strength

22.1

N/mm2

2800

psi

Compressive Strength

35.9

N/mm2

5200

psi

CTE (rm temp to 100°C)

2.4

10-6/°C

1.3

10-6/°F

Thermal Conductivity

190

W/m.K

110

BTU/ft.hr.°F

Ash content

.5

%

.5

%

Max Grain Size

.8

mm

.031

inch

Color

Gray/Black

N/A

Gray/Black

N/A

Maximum Operating Temperature

450

°C

842

°F

When used in magnet assemblies, such as rotors and stators, devices, and magnet systems, the most successful method found is to mechanically affix the K1082 spacer using the same adhesive as the magnet. If for an application requiring special ultra low vacuum properties, mechanically affix the spacer in position by using screws.

For applications that require very tight tolerances (.001 and less), the K1082 does not interfere with post assembly grinding processes as some harder ceramics do. This makes it possible to maintain smooth transitions between the K1082 spacer and the magnet. This stress-free interference between the spacer and the magnet is highly desirable for product longevity and reliability.

K1082 does not oxidize and is compatible with most solvents and chemicals. In all cases, K1082 will withstand any environment that rare earth magnets will withstand.

K1082 has the same magnetic properties as that of vacuum; therefore, it may be completely disregarded in magnetic design analysis.

TDS Rev 2.2 (12/20/01)