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Address:cicun,zichuan district,
zibo city, shandong province,china.
 
catalog > High aluminum Protection tube



Application: mainly used for chemical analysis in thermocouple protection tube and metallurgy, 
steel, glass and other industries 
Material1. Corundum   2.High aluminum

Category1.Protection tube

          2.Insulating tube

          3.Through the tube

 

Material/

Parameter

AL2O3

Sio2

Fe2O3

Alkaline 

substances

Density

Hardness

Water 

absorption

Flexural 

strength

Corundum

99%

0.2%

0.1%

0.1%

3.9g/cm3

9M

0.1%

2000kg/cm2

Corundum

95%

0.5%

0.3%

1.5%

3.5g/cm3

8M

0.15%

1800kg/cm2

High aluminum

85%

12%

0.5%

2.5%

2.6g/cm3

7M

0.2%

1300kg/cm2

Air tightness: under in 1.3Kpa negative pressure, for 10 minutes, the pressure drop is less than 0.3 Kpa

Heat resistance:insert the tube into the furnace 20mm, heated to 1600  C  Insulate for 30 minutes, 
not bend, not soften.

Expansion coefficient:  corundum 810-8    high aluminum 5  10-8

Operating temperature: corundum long-term 1600 , short-term 1800 
                       High aluminum  long-term 1300   short-term  1600 

Heat stability: corundum 1300  C to room temperature three times without cracking.

                    High aluminum 1300  C to room temperature three times without cracking.

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Phone: 0533-5558118   Technical supportOK

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