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China Steatite Ceramic Thermocouple Insulating Beads For Electrical Insulators

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China Steatite Ceramic Thermocouple Insulating Beads For Electrical Insulators

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Brand Name : GME

Model Number : Mgo rod

Certification : CE

Place of Origin : China

MOQ : 500pcs

Price : USD$0.002/pc

Payment Terms : L/C, T/T, Western Union

Supply Ability : 100000pcs per month

Delivery Time : 30days

Packaging Details : paper carton, wooden carton

Material : Magnesium oxide ceramic

Color : White / Ivory

Bores : Single,two,four or multi bores

Shape : Round, square, rectangular, oval

Usage : Works as refractory material

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China Steatite Ceramic Thermocouple Insulating Beads for Electrical Insulators

Description:

Applications of Thermocouple Insulator:

Alumina is the best-known advanced ceramic material, is widely used in automotive, petro-chemical, fluid control,material transfer, Industry,electrical and electronic, semiconductor.Sapphire is single-crystal alumina.

Alumina ceramic is the most mature of the engineering ceramics, offering excellent electrical insulation properties together with high hardness and good wear resistance but relatively low strength and fracture toughness.

Steatite is made of mineral talc (3Mgo 4Sio2 H2O) as the main raw material, adding appropriate amounts of clay, BaTi03 and other ingredients, and mixing and grinding, molding and high temperature sintering. Used for insulating parts

The specification of Thermocouple Insulator:

Chemical component:

SIO2: about 60%
MgO:about 31%
AL2O3:about 5%
BaO:about 5%
CaO:about 0.5%
Fe2O3:about 0.2%
Material Unit Al2O3-99.% Al2O3-99%
Items
Al2O3 % 99.7 99.3
SiO2 % <0.1 —
Density g/cm3 3.95 3.88
Water Absorption % 0 0.01
Flexural Strength Mpa 450 350
20°C Leakage rate Torr/L.sec <10-11 <10-11
High Temperature Curve mm

1700°C

0.2mm is allowed

1600°C

0.2mm is allowed
High Temperature Bonding 1700°C
Not		 1700°C
Not
20~1000°C Coefficient of Linear Thermal Expansion mm.10-6/°C.m 8.6 8.2
Thermal Conductivity W/m.K 25 25
Breakdown Voltage KV/mm 20 20
20°C DC Volume Resistivity Ohm/cm 1014 1014
High Temperature Volume Resistivity 1000°C MΩ ≥0.08 ≥0.08
1300°C MΩ ≥0.02 ≥0.02
1550°C Thermal Shock —

Did not crack

in 6 times cycle at 1550°C

Did not crack

in 6 times cycle

at 1550°C
Limit of Application °C 1900 1800
Max Manufacturing Length for Tube mm 1600 1600

Applications
* Insulating washers or bushings
* Supports for heating elements
* Electrical insulators
* Stand-off insulators
* Lighting insulators (supports, bases, etc.)
* Spacers

China Steatite Ceramic Thermocouple Insulating Beads For Electrical Insulators


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