Oxide ceramics based on Al2O3

GRANALOX® NM 9212                 wear-resistant ceramics, simple components for mechanical and electrical engineering

GRANALOX® NM 9620 F              electrical insulating parts, metallizable ceramics, polishable machine components, chemicals- resistant components, ballistic                                                  armouring

GRANALOX® NM 9922                  engeneering pramic, constructional elements

 

Table 1: Specifikation/Properties  of oxide ceramics based on Al2O3

Trade description

 

 

GRANALOX®NM 9212

GRANALOX®NM 9620 F

GRANALOX®NM 9922

Qualification based onČSN EN 60672

 

 

C 786

C 795

C 799

 

Symbol

Units

 

 

 

Al2O3 content

 

[%]

92

96

99,7

Open porosity

pa

[%]

0

0

0

Bulk density

ρa

[g.cm-3]

3.4

3.5

3.7

Modulus of elasticity

E

[GPa]

220

280

300

Flexural strength

σ

[MPa]

250

280

300

Mean coefficient of linear thermal expansion

α30-600

[10-6 K-1]

6-8

6-8

7-8

Thermal conductivity

λ30-100

[Wm-1K-1]

14-24

16-28

19-30

Resistance to thermal shock

ΔT

[K]

140

140

140

Relative permittivity

εr

-

9

9

9

Volume resistivity in terms of temperature

ρv,30

[Ω.m]

1012

1012

1012

ρv,200

[Ω.m]

1010

1010

1010

Colour

 

 

white

white

white

 

 


Contact

Alumina Systems s.r.o.

Kladská 916/65
Hradec Králové
50003
CZECH REPUBLIC


+420 495 407 549