Steatite and cordieritte ceramics

Steatite ceramics                     comstruction insulating material

Cordieritte ceramics               electrical applications, power resistors, bodls of infra-red- radiators,  catalyst carriers of engines exhausts

 

Table 2: Specifikation/Properties  of dolomitic ceramics.

 

 

 

Material

 

 

 

STEATIT

CORDIERIT

Qualification based on  ČSN EN 60672

 

 

C 221

C 410

Trade description

 

 

FR 59/8

TH 7/7 R12 BM

 

Symbol

Units

 

 

Open porosity

pa

[%]

0

0.5

Bulk density

ρa

[g.cm-3]

2.7

2.1

Modulus of elasticity

E

[GPa]

110

-

Flexural strength

σ

[MPa]

140

60

Mean coefficient of linear thermal expansion

α30-600

[10-6 K-1]

7-9

2-4

Thermal conductivity

λ30-100

[Wm-1K-1]

2-3

1.2-2.5

Resistance to thermal shock

ΔT

[K]

100

250

Relative permittivity

εr

-

6

5

Volume resistivity in terms of temperature

ρv,30

[Ω.m]

1011

1010

ρv,200

[Ω.m]

109

106

Colour

 

 

beige

grey

 

 




Contact

Alumina Systems s.r.o.

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Hradec Králové
50003
CZECH REPUBLIC


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