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Technical Data Sheet - K1145


K1145, formally known as TTZ, is a toughened modified Zirconia material that has excellent thermal, conductive, and physical properties for use as a spacer between magnets in assemblies, magnet systems, and magnet arrays. It is especially popular with rare-earth (Neodymium Iron Boron and Samarium Cobalt) magnet assemblies where potential impact is an issue. Because the material has a high density, and has been toughened, it is very resistant to abrasion, is considered inert, and is fracture resistant. Surfaces can be polished as desired to achieve a low coefficient of friction numbers, and if secondary and tertiary processes are utilized, mirror finishes are possible.

K1145 meets NASA's out-gassing requirements for space programs because CML and CVCM values are both zero. K1145 is excellent in ultra-high vacuum applications, medical applications, and applications requiring extremely tight mechanical tolerances over a range of temperatures.

Typical Properties

Characteristic

Value

Units

Value

Units

Bulk Density

5.76

g/cm3

360

lb/ft3

Specific Resistance

>6.9

µ-ohm-m

>27

10-5 ohm-in

Flexural Strength

650

N/mm2

82,000

psi

Compressive Strength

1800

N/mm2

260,000

psi

CTE (rm temp to 100°C)

9.8

10-6/°C

7.7

10-6/°F

Thermal Conductivity

2.2

W/m.K

1.27

BTU/ft.hr.°F

Max Grain Size

.008

mm

.031

inch

Color

Off White

N/A

Off White

N/A

Maximum Operating Temperature

450

°C

842

°F