ALTRA® KVF HIGH-TEMPERATURE

ALTRA® KVF HIGH-TEMPERATURE VACUUM-FORMED FELT BOARDS & SHAPES

ALTRA® KVF high-temperature vacuum-formed felt products are available in formulations for service temperatures up to 1500°C. ALTRA® KVF features low thermal conductivity, excellent thermal shock resistance, high-purity, and good density uniformity. ALTRA® KVF is formed from alumina and/or alumino-silicate fibers and latex, which will burn out at temperatures > 450°F.

 

ALTRA® KVF HIGH-TEMP VACUUM-FORMED FELT BOARDS
Properties Units KVF GRADE
KVF 121 KVF 141 KVF 161 KVF 161 HA
Classification Temperature

Service Temperature
°F (°C)

°F (°C)
2282 (1250)

2102 (1150)
2552 (1400)

2372 (1300)
2912 (1600)

2732 (1500)
2912 (1600)

2732 (1500)
Density lbs/ft³
(kg/m³)
10
(160)
10
(160)
6
(100)
6
(100)
Linear Shrinkage
24 hrs @ Temperature
“+” indicates growth
% 1% @ 900°C
2% @ 1000°C
3% @ 1100°C
1% @ 1000°C
2% @ 1100°C
3% @ 1250°C
0.5% @ 1250°C
1% @ 1400°C
2% @ 1500°C
0.5% @ 1250°C
1.5% @ 1400°C
2.8% @ 1500°C
Chemical
Composition

Al2O3

SiO2

wt % 46
53
48
52
73
27
94
6
Organic Content wt % 5 5 5 5
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)

BTUin/hrft² °F
(W/mK)



(0.07)
(0.12)
(0.18)
(0.25)
(0.35)



(0.07)
(0.12)
(0.18)
(0.25)
(0.35)
(0.48)



(0.07)
(0.12)
(0.18)
(0.25)
(0.35)
(0.48)



(0.08)
(0.15)
(0.24)
(0.34)
(0.56)
(0.84)


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