JobShop.com Technical Article: Ceramic Materials

This technical information has been contributed by
Superior Technical Ceramics Corp.
Click on Company Name for a Detailed Profile

Ceramic Materials - Steatite

Steatite

Designation

S-200 L-4

S-300 L-5

Color

Off White

Grey-Green

Hardness

Mohs

7.5

7.5

Water Absorption

%

Impervious

Impervious

Specific Gravity

2.6

2.75

Tensile Strength

PSI

10,000

10,000

Compressive Strength

PSI

80,000

85,000

Flexural Strength

PSI

20,000

21,000

Maximum Operating Temperature Under Non Loading Conditions

°C

1300

1300

°F

2350

2350

Linear Coefficient Of Thermal Expansion:

(@25 °C - 100 °C)
x10^-6/°C

6.5

6.0

(@25 °C - 600 °C)
x10^-6/°C

8.3

7.0

Dielectric Strength
(1/4" Thick)

VOLTS/MIL

225

240

Dielectric Constant

At 25 °C & 1 mhz

5.7

5.9

Loss Factor

At 25 °C & 1 mhz

.016

.008

Te Value

Temp°C @ which one cm³ of material has a mega- ohm of resistance

710

750

NOTE: THE INFORMATION IN THIS DATA SHEET IS FOR DESIGN GUIDANCE ONLY. FORMING METHODS AND SPECIFIC GEOMETRY COULD AFFECT PROPERTIES. SLIGHT ADJUSTMENTS CAN BE MADE TO SOME OF THE PROPERTIES TO ACCOMMODATE SPECIFIC CUSTOMER REQUIREMENTS. MOST OF THE DENSE MATERIALS IN THE TABLE ARE RESISTANT TO MECHANICAL EROSION AND CHEMICAL ATTACK.

This technical information has been contributed by
Superior Technical Ceramics Corp.
Click on Company Name for a Detailed Profile

Steatite	Designation	S-200 L-4	S-300 L-5

Color		Off White	Grey-Green
Hardness	Mohs	7.5	7.5
Water Absorption	%	Impervious	Impervious
Specific Gravity		2.6	2.75

Tensile Strength	PSI	10,000	10,000
Compressive Strength	PSI	80,000	85,000
Flexural Strength	PSI	20,000	21,000

Maximum Operating Temperature Under Non Loading Conditions	°C	1300	1300
	°F	2350	2350
Linear Coefficient Of Thermal Expansion:	(@25 °C - 100 °C) x10^-6/°C	6.5	6.0
Linear Coefficient Of Thermal Expansion:	(@25 °C - 600 °C) x10^-6/°C	8.3	7.0

Dielectric Strength (1/4" Thick)	VOLTS/MIL	225	240
Dielectric Constant	At 25 °C & 1 mhz	5.7	5.9
Loss Factor	At 25 °C & 1 mhz	.016	.008
Te Value	Temp°C @ which one cm³ of material has a mega- ohm of resistance	710	750

NOTE: THE INFORMATION IN THIS DATA SHEET IS FOR DESIGN GUIDANCE ONLY. FORMING METHODS AND SPECIFIC GEOMETRY COULD AFFECT PROPERTIES. SLIGHT ADJUSTMENTS CAN BE MADE TO SOME OF THE PROPERTIES TO ACCOMMODATE SPECIFIC CUSTOMER REQUIREMENTS. MOST OF THE DENSE MATERIALS IN THE TABLE ARE RESISTANT TO MECHANICAL EROSION AND CHEMICAL ATTACK.


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