ALTRA® KVR HIGH-ALUMINA VACUUM-FORMED BOARDS

ALTRA® KVR HIGH-ALUMINA VACUUM-FORMED BOARDS

ALTRA® KVR high-alumina vacuum-formed products are available in formulations for service temperatures up to 1550°C. ALTRA® KVR boards feature low thermal conductivity, good thermal shock resistance, high-purity, and good density uniformity. ALTRA® KVR products are formed from ALTRA® 97 alumina fibers with pure alumina and organic binders and are pre-fired to remove all organics. Low silica content makes ALTRA® KVR ideal for service in reducing atmospheres such as hydrogen or vacuum.



  • CNC Machining Services available

  • Standard Board Size: 600mm x 400mm, Thickness 25, 38 and 50mm

  • Other board sizes and thickness available upon request

 

ALTRA® KVR HIGH- ALUMINA VACUUM-FORMED BOARDS
Properties Units ALTRA® GRADE
KVR 164/242 KVR 164/502 KVR 164/702
Maximum Service
Temperature
°F
°C
2822
1550
2822
1550
2822
1550
Density lbs/ft³
(kg/m³)
15
(240)
31
(500)
45
(700)
Linear Shrinkage
24 hrs @ Temperature
% 0.0% @ 1400°C
0.2% @ 1500°C
0.4% @ 1600°C
0.0% @ 1400°C
0.2% @ 1500°C
0.5% @ 1600°C
0.0% @ 1400°C
0.1% @ 1500°C
0.4% @ 1600°C
Thermal Conductivity

752°F (400°C)

1112°F (600°C)

1472°F (800°C)

1832°F(1000°C)

2192°F(1200°C)

2552°F(1400°C)


W/mK

0.131
0.162
0.214
0.280
0.363
0.462

0.176
0.189
0.213
0.242
0.286
0.322

0.204
0.217
0.239
0.261
0.294
0.326
Chemical Composition

Al2O3

SiO2

Other oxides


Present as mullite at alumina
fiber grain boundaries

wt %

>98%
< 2% *
< 0.2%

>98%
< 2%*
< 0.2%

>98%
< 2%*
< 0.2%


Downloads:




Request a Quote