MIL-DTL-45301E
4.5 Preparation of sheet specimens. Platen press sheets, 0.080 + 0.010 in.
(2.03 + 0.25 mm) in thickness and 6 x 6 in. (152 x 152 mm) square, with a core of 90 minutes at a
temperature of 280°F (138°C) shall be used for conducting the physical properties tests specified
in 4.9.1.1 and prepared in accordance with ASTM D3182.
4.6 Material.
4.6.1 Tread elastomer. To determine conformance to 3.2.1, compound color shall be
verified by visual examination. To confirm that compound formulation for Group B, P-12
material conforms to table I, tests shall be performed accordingly to the methods of ASTM D297.
4.6.2 Tie gum and backing. To determine conformance with 3.2.2 and 3.2.3, the
contractor shall certify that the tie gum, if specified, and the backing conforms to the requirements
specified herein.
4.6.3 Vulcanization. To determine conformance to 3.2.4, vulcanization time for the
creation of specimens and temperature for class 3, 4, 5, and 6 tread elastomer shall be determined
by ASTM D3182.
4.7 Construction.
4.7.1 Class 1 and class 2. To determine conformance to 3.3.1, the tie gum and backing
shall be verified with measuring and visual testing procedures.
4.7.2 Class 3, class 4, class 5, and class 6. To determine conformance to 3.3.2, the tread
elastomer shall be inspected visually.
4.7.3 Class 4. To determine conformance to 3.3.3, class 4 tread elastomer shall be
inspected visually.
4.7.4 Class 6. To determine conformance to 3.3.4, class 6 tread elastomer shall be
verified visually and with a scale.
4.8 Classes and sizes. To determine conformance to 3.4.1 through 3.4.6, all classes shall
be verified with measurement equipment to confirm dimensional sizes.
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