Machinable technical ceramics

Machinable ceramics

Final Advanced Materials provides a full range of high temperature machinable technical ceramics according to your drawings.

A precise definition of dense ceramic materials, very close to most known sintered ceramics, in use in all technologies where heat resistance, abrasion resistance, chemical resistance, mechanical strength are criteria justifying their use. However, these ceramics involve a specific equipment and know-how in terms of mechanical machining or shaping.

On the contrary, machinable technical ceramics are easily manufactured by means of conventional machine tools. These ceramics can be sawn, drilled, milled, turned with classic tools, available in all general mechanical workshops.

Machinable technical ceramics allow the production of small series parts, as well as validation prototypes. A single ceramic cannot meet all the requirements and all the requests, that is why we have developed over the years, a full range of easily machinable ceramic materials, capable of responding to a maximum of constraints. The tables below will help you to choose the most appropriate product according to your application.

Our wide range of machinable ceramics

Machinable Alumina

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.

Machinable Macor® Glass Ceramic

Macor® machinable glass ceramic is recognized worldwide to be a major technological innovation, as well as a technical solution for a wide range of industrial applications.

Machinable Aluminium Nitride

Aluminium nitride is an electrical insulating refractory material having very high thermal conductivity, higher than that of copper at 200°C, and showing high resistance to oxidation and abrasion.

Machinable Boron Nitride

Boron nitride is a white solid material in the as produced hot pressed form. It is a low porosity solid. It is easily machined into complex shapes using standard carbide tooling.

Machinable Quartz

The electrical fusion process uses resistance heating to melt highly refined quartz sand into semi finished quartz glass products.

Machinable Shapal M™

Shapal M™ is an electrical insulating refractory material. Unlike sintered ceramics, machining with conventional tools is possible.

Machinable Porous Silica

Cotronics® Rescor® 310M is a 99% porous silica ceramic, easy to machine, porous silica board resist to 1650°C maximum.

Machinable Alumina Silicate

Aluminia silicate is a pyrophyllite rock. The ore that we have selected, features exceptional mechanical and thermal performances.

Machinable Vitro800 Glass Ceramic

Vitro 800 machinable glass ceramic is an economic alternative to Macor®.

     Properties

Units

 

Alumina silicate raw

Alumina silicate 1100°C

Alumina silicate 1300°C

Macor®

Glass ceramic (Vitro 800)

Physical characteristics

Density

g/cm3

2.9

2.4

2.5

2.52

2.7

Porosity

%

1.5 - 2

0 - 0.5

0

0.096

10

Water uptake

%

1.5 - 2

0 - 0.5

0 -0.5

0

0.038


Mechanical characteristics

Hardness

 

Mohs:

2.5

Mohs:

5.5

Mohs:

7.5

Rockwell A: 48

Mohs:

4

Compressive Strength

N/mm2

6

150

800

345

488

Flexural Strength

N/mm2

12

50

80

94

108

Modulus of Elasticity

GPa

-

-

-

66.9

65

Thermal characteristics

Peak Temperature

°C

900

1100

1400

1000

800

Continuous Temperature

°C

700

1100

1300

800

800

Specific Heat at 20°C

J/kg.°K

-

-

-

0.79

/

Thermal Conductivity at 100°C

W/m°K

1.07

1.7

2.2

1.46

1.68

Coefficient of Expansion

 

 

 

 

20 - 40 °C

 

-

-

-

9.3

/

20 - 600 °C

10-6/°K

 

-

2.9 - 3.6

6-8

11.4

8,6

20 - 800 °C

 

-

/

/

/

/

20 - 1000 °C

 

7-12

4-10

/

/

/

 Electrical characteristics

Specific Resistivity at 20°C

Ohm.cm

10-10

10-12

10-12

10-17

1.8 x 1014

Dielectric at 20°C

at 1 KHz

/

/

6.1

6.03

6~7

Loss Tangent

at 1 KHz

 

/

/

9X10-5

0.005

/

Dielectric Strength at 20°C 

KV / mm

 

8-10

6-7

12 -17

40

> 15

Chimical characteristics

Corrosion resistance at 20°C

B

 

B

B

B

B

B

Resistance to alkalis et  20°C

B

 

B

B

B

TB

TB

Properties

Units

Machinable alumina

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

-

-

-

Caractéristiques électriques

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

Chimical characteristics

Corrosion resistance at 20°C

 

B

-

-

-

Resistance to alkalis et  20°C

 

B

-

-

-

Machinable technical ceramics (873.92k)

Machinable technical ceramics data sheet.


Alumina 960 machinable ceramic

Final Advanced Materials provides Cotronics machinable 96% Al2O3 ceramic, Alumina 960, available in boards and rods. We can machine according to your drawings.
Full description

Alumina silicate machinable ceramic

Final Advanced Materials provides alumina silicate, machinable high temperature ceramic. We offer boards, rods or machined parts according to your drawings.
Full description

Aluminium nitride machinable ceramic

Final Advanced Materials provides machinable aluminium nitride : Rods, boards or machined parts according to your drawings
Full description

Boron nitride machinable ceramic

Final Advanced Materials provides machinable boron nitride ceramic. We can provide rods, boards or machine parts according to your drawings
Full description

Macor® machinable ceramic

Final Advanced Materials provides Macor, machinable high temperature ceramic. We offer boards, rods or machined parts according to your drawings.
Full description

Porous silica machinable ceramic

Cotronics® Rescor® 310M is a 99% porous silica ceramic, easy to machine, porous silica board resist to 1650°C maximum.
Full description

Quartz glass machinable ceramic

Final Advanced Materials provides machinable quartz : Rods, boards or machined parts according to your drawings
Full description

Shapal M™ machinable ceramic

Final Advanced Materials provides machinable Shapal M aluminium nitride : Rods, boards or machined parts according to your drawings.
Full description

Vitro 800 machinable ceramic

Final Advanced Materials provides Vitro 800, machinable high temperature glass ceramic. We offer boards, rods or machined parts according to your drawings.
Full description