Alumina Shaft

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Delivery term: The date of payment from buyers deliver within days
seat: Beijing
Validity to: Long-term effective
Last update: 2017-10-02 20:06
Browse the number: 394
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Alumina Shaft specifications

AL2O3

99%

MgO

0.8%

Na2O

<0.15%

SiO2

<0.018%

Y2O3

<0.02%

Fe2O3

<0.02%

TiO2

<0.006%

CaO

<0.005%

Specifications of Alumina Shaft

Items

Test condition

Unit


Average grain size


µm

3 - 5

Density


g/cm3

=3.85

Water absorption


%

0

Hardness (Vickers)

HV0.5


=1900

Flexual strength

Distance between bending points 80mm

MPa

=340

Compressing strength


MPa

3600

Linear thermal expanding coefficient

20-500?

1x106 mm/?

6.5 – 7.5

20-800?

6.5 - 8.0

Thermal conductivity

20?

W/(m.K)

=24

Dielectric strength


KV/mm

=12

Volume resistivity

300?

O.cm

=1011

Dielectric constant

1MHz


9.3-10.6

Dielectric loss

1MHz


3x10-4

Thermal shock resistance

850?

times

=7

http://www.ceramic-metal-part.com/

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