Physical Properties

 PROPERTY

TEST UNIT

 P440

Porcelain

Low Loss

HF300
STEATITE

S145

STEATITE

 C5

CORDIERITE

 R197

REFRACTORY

R200

REFRACTORY

R250

PURE MgO

 COLOUR

WHITE

OFF WHITE

CREAM

GREY

WHITE / CREAM

DARK CREAM

LIGHT BROWN

 DENSITY

 Grams/cm3

2.4

2.9

2.6

2.3

 2.0

 2.2

3.3

POROSITY

 %

NIL

NIL

NIL

NIL

POROUS

POROUS

N.A

 CROSS BENDING

STRESS

MN/m2

1cm diam.sample

 82.74

151.68

124.11

 75.84

 48.26

 44.82

N.A

COMPRESSIVE STRENGTH

MN/m2

1cm diam.sample

482.63

861.85

750.42

698.48

 275.79

262.0

N.A

TENSILE STRENGTH

MN/m2

 48.26

51.71

 55.16

N.A

 PERMITIVITY

5-4

6

 6

5-7

 –

POWER

1KHz :

 80-100

7

 35

 –

 –

 FACTOR

1MHz : x 10-4

6

 30

70

 –

10MHz:

8

32

 –

 –

 –

 20°C

>1014

>1014

>1014

>1014

 dry >1012

 dry >1014

dry >1014

 300°C

 6 x 106

109

3 x 107

5 x 108

5 x 108

109

1013

RESITIVITY

Ω/CM3 @ :

600°C

3 x 104

2 x 106

105

7 x 105

106

 107

1010

900°C

2 x 103

5 x 105

7 x 103

2 x 105

103

 105

108

DIELECTRIC STRENGTH

KVmm

@ 20 °C sample

thickness 5mm

25

25

24

25

 THERMAL CONDUCTIVITY

 W/m/K

@375-1200

2.06

@375-1000

1.91

 @300-400

3.26

 HARDNESS

MOHS

7-8

7-8

7-8

7

6

6

 COEFFICIENT of LINEAR EXPN.

X 10-6 @

20-800°C

6.5

7.7

 7.5

2.6

4.0

4.5


Visa & Mastercard accepted

© 2017 Ceramic Substrates and Components Ltd
Lukely Works, Carisbrooke Road, Newport, Isle of Wight, United Kingdom, PO30 1DH
Tel: +44 (0)1983 528697 - Fax: +44 (0)1983 822252 - Email: info@ceramic-substrates.co.uk
Company Registration No.934853