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 TABLE 7-1.
I n s u l a t i o n Properties
Max Temp
Density
l b / f t3
F
k Factors
Material
Glass wool (organic binder)
400
0.5 -3
0.35 @ 300F
c e m e n t s and fillers
P r o c e s s e d Gilsonite 1
460
40-44
0.6 to 0.8
800
7.5 - 9
C e l l u l a r glass
0.55 @ 300F;
1.04 @ 800F
F e l t e d glass fiber (no binder)
1,000
4.5
0.35 @ 300F;
0.71 @ 800F
C a l c i u m silicate
1,200
11 -13
0.42 @ 300F;
0.60 @ 700F
Mineral fiber fill
1,200
1 0 - 12
0.26 @ 100F;
( r o c k , slag, or glass)
0.65 @ 600F
E x p a n d e d silica (perlite)
1,500
4 -13
0.33 @0F;
1.13 @ 1,000F
1 6 - 24
Mineral fiber fill
1,800
0.59 @ 400F;
( r o c k & slag)
0.75 @ 1,000F
Mineral fiber fill
1,800
2 4 - 30
0.55 @ 200F;
( r o c k , slag, or glass)
0.80 @ 600F
A l u m i n a / s i l i c a ceramic fiber
2,300
3 -12
0.31 @ 300F;
0.82 @ 1,000F
* U s e d for underground insulation
7 0 lb/in2 and compressive strength is about 100 lb/in2 for a 5 percent
deformation.
( b ) Expanded Silica. T h i s is another molded insulation having a
temperature range from O to 1,500F. I n addition to its compressive strength
o f a p p r o x i m a t e l y 1 0 0 l b / i n2 at a 5 percent deformation, it is water resistant.
(c) Mineral-Fiber. This is available in rigid or flexible blanket
form. C u t t i n g and mitering are accomplished easily in the field.
(d) Glass Compounds. T h i s is a versatile material available in many
f o r m s such as blankets, semirigid sheets, and cylindrical shapes. Maximum
u s a b l e temperatures vary depending on the additives required to obtain the
specified properties.
7-2
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