Alumina 960 machinable ceramic

Machinable Al2O3 ceramic Alumina 960

Final Advanced Materials provides Al2O3 machinable ceramics. Cotronics® machinable Alumina is available in boards and rods, we can machine according to your drawings.

Cotronics® Rescor® 960 is a 96% Alumina machinable ceramic that is usable to 1650°C. It is manufactured from high purity alumina by a unique process.

Machining can be accomplished with conventional tooling on standard shop equipment. No heat treatment is required. Rescor® 960 machinable Alumina can be used continuously to temperatures of 1650°C and offers the convenience and economy of an in house capability for Alumina parts. The chemical, thermal and electrical properties of Rescor® 960 is equivalent to standard high alumina ceramics. 

Alumina 960 applications

  • Electrical and electronic industries
  • Metallurgical
  • Fixtures and vacuum industries

Technical data

Properties

Units

Machinable alumina 960

Machinable boron nitride

Aluminium nitride (Shapal M™)

Machinable Aluminium nitride

Physical characteristics

Density

g/cm3

3.8

1.85

2.9

2.9

Porosity

%

10

14

0

<0.1

Water uptake

%

2-3.5

/

0

0

Mechanical characteristics

Hardness

Mohs:

5

Knopp : 4 kg/mm²

Vickers : 3900 kg/mm²

Vickers : 3750 kg/mm²

Compressive Strength

MPa

422

20

1200

1170

Flexural Strength

MPa

267

50

300

300

Modulus of Elasticity

GPa

/

/

190

180

Thermal characteristics

Peak Temperature

°C

1650

850

(1150 inerte)

1000

(1900 inerte)

1000

(1900 sous vide)

Continuous Temperature

°C

1650

850

(1150 inerte)

1000

(1900 inerte)

1000

(1900 sous vide)

Specific Heat at 20°C

J/kg.°K

-

810

-

-

Thermal Conductivity at 100°C

W/m°K

-

90

90

90

Coefficient of Expansion

10-6 /°K

20 - 40 °C

-

-

4.4

-

20 - 600 °C

-

-

4.8

4.5

20 - 800 °C

-

-

5.1

-

20 - 1000 °C

0.57

-

-

-

Electrical characteristics

Specific Resistivity at 20°C

Ohm.cm

1014

1014

1012

1012

Dielectric at 20°C

 

9 (à 100kHz)

4

7.1

7.1

Loss Tangent

0.0012

0.001

-

Dielectric Strength at 20°C 

kV/mm

7.87

2

40

40

Chemical characteristics

Corrosion resistance at 20°C

 

G

-

-

-

Resistance to alkalis et  20°C

G

-

-

-

Machinable technical ceramics (873.92k)

Machinable technical ceramics data sheet.