Andy Company 安迪公司
 

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Alumina Crucibles And Boats| Thermocouple protection tubes| Ceramic Electric insulator| Ceramic Rollers For Furnaces| Alumina Plate And Disk|

 

 
 

 
Alumina Thermocouple Protection Tubes
 
Outside Dia mm
Inside Dia mm  Max. Length mm 85%
95%
99.35%  99.5%  99.8%
 AY-APT25
 25  19   2000    
 
 AY-APT20
 20
 14  2000    
 
  AY-APT16 
 16
 12  2000      
  AY-APT14 
 14
 10  1500      
 AY-APT12
 12
  8  1200       
 AY-APT10
 10
  7  1000      
AY-APT 8
  8
  5  1000  
 
 
AY-APT 6
  6
  4  1000      
             
    Both Ends Open         
  AY-AT822   8 2 holes ¢2mm   2000      

TYPICAL PHYSICAL PROPERTIES
AL2O3      %Composition
60
75
80
85
92
95
99
99.8
Density(g/cm3)
3.0
3.1
3.3
3.4
3.6
3.7
3.81
3.91
Flexural Strength(MPa)
205
280
215.7
230
312
304
340
370
Thermal Expansion
(×10-6/℃)
(25-800℃)
7.1
7.6
7.6
7.6
7.5
7.3
7.6
7.6
Thermal Conductivity
[w/(m.R)]
16
17
17
17
18
20
34
35
Dielectric Strength 
(KV/mm)
10
10
10
10
10
10
10
10
Resistivity (Ω.cm)
20℃
>1014
>1014
>1014
>1014
>1014
>1014
>1014
>1014
300℃
>1013
>1013
>1013
>1013
>1013
>1012
>1010
>1010
Max. Service Temp.
1350℃
1100℃
1300℃
1350℃
1500℃
1600℃
1700℃
1800℃
Hardness (Moh'sscale)
7.5
7.5
7.5
7.5
8.5
8.8
9
9
耐火度
1800
1700
1800
1850
1920
2000
2030
2040

Address: No.2-110,DongFeng Road, Zhengzhou city, Henan, China
豫ICP备07007972号
Telephone: 86-138-3855 0579 EMail: sales@andygroup.com shiransophie@hotmail.com