MIL-DTL-17667E
TABLE I. Performance requirements.
Test
Property
Requirement
paragraph
reference
Basis Weight
Stipulated basis weight verified
4.5.1
4.5.1
Bursting Strength
Type I
30 Basis wt
21 pts (min)
50 Basis wt
35 pts (min)
80 Basis wt
56 pts (min)
Type II
35 Basis wt
14 pts (min)
50 Basis wt
20 pts (min)
70 Basis wt
27 pts (min)
Tearing Resistance
4.5.1
Type I
30 Basis wt
45 grams (min avg) (each direction)
50 Basis wt
90 grams (min avg) (each direction)
80 Basis wt
160 grams (min avg) (each direction)
Type II
35 Basis wt
90 grams (min avg) (each direction)
50 Basis wt
130 grams (min avg) (each direction)
70 Basis wt
160 grams (min avg) (each direction)
Tensile Breaking Strength
4.5.1
Type I
30 Basis wt
10 lbs/in. width (min avg) (each direction)
50 Basis wt
18 lbs/in. width (min avg) (each direction)
80 Basis wt
35 lbs/in. width (min avg) (each direction)
Type II
35 Basis wt
8 lbs/in. width (min avg) (each direction)
50 Basis wt
10 lbs/in. width (min avg) (each direction)
70 Basis wt
18 lbs/in. width (min avg) (each direction)
Elongation (type II only)
Not less than 20% elongation in creped direction
4.5.1
Contact Corrosivity
No induced corrosion in the contact area
4.5.1
Spring Back
4.5.2
Less than 70° of spring back in each direction
Type I
(avg)
Less than 70° of spring back in creped direction
Type II
only (avg)
Hydrogen Ion Concentration
pH not less than 6.5 and not greater than 7.5 (avg)
4.5.3
5
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