| |
Grade I
|
|
Property
|
Specification
|
SafeCrest
G-15M
|
|
Color
|
Not
blue, red, orange, or yellow
|
Charcoal
|
|
Density
range (lbs/ft³)
|
1.20-1.50
|
1.2-1.4
|
|
Max
Avg. Density (lbs/ft³)
|
Not
specified
|
1.35
|
|
Porosity
(Pores per inch)
|
7.5-21.0
|
15
|
|
Air
pressure drop
(in. wg.)
|
0.150-0.250
|
0.210
|
|
Tensile
strength (psi)
|
10.0
min
|
16.3
|
|
Ultimate
elongation (percent)
|
100.0
min
|
180
|
|
Tear
resistance (psi)
|
3.0
min
|
4.1
|
|
Constant
deflection compression set (percent)
|
45.0
max
|
29
|
|
Compression
load deflection at 25% (psi)
|
0.35
min
|
0.48
|
|
Compression
load deflection at 65% (psi)
|
0.60
min
|
0.91
|
|
Fuel
displacement (volume percent)
|
2.50
max
|
0.67
|
|
Fuel
retention
(volume percent)
|
2.50
max
|
2.12
|
|
Flammability
(in/min)
|
15.0
max
|
12.9
|
|
Extractable
materials (wt. percent)
|
3.0
max
|
2.90
|
|
Volume
increase
(volume percent)
Type I Fluid
Type III Fluid
JP-4 turbine fuel
|
0
- 15.0
0 - 40.0
0 - 25.0 |
9.9
20.1
16.8 |
|
Low
temperature flexibility
|
No
cracking or breaking of strands
|
|
Entrained
solid contamination (mg/ft³)
|
11.0
max
|
10.1
|
|
Steam
autoclave exposure
(percent tensile loss)
|
30.0
max
|
17.8
|
|
Electrical
resisitvity
(ohm-cm) at 75°F
|
1.0x107
to 5.0x1011
|
1.1x1011
|
|
Electrical
resisitvity
uniformity at 75°F
|
2
orders of magnitude from top to bottom
|
<1
order of magnitude from top to bottom
|
|
Effective
static dissipation tempature range (°F)
Class 1
Class 2
|
+10
to +160
-25 to +160
|
0
to +160
-25 to +160
|
