MIL-C-684D(MU)
4.5.4 Tests .-The following tests shall be conducted in accordance with
method and procedures specified in 4.6.
4.5.4.1 Hardness. -A sample of 25 cups shall be tested for hardness.
Failure of any cup to comply with the requirements of 3.3 shall be cause
for rejection of the lot.
4.5.4.2 Workability. -The qualification samples specified in Table I,
the sample of 5000 cups from the initial production sample, and a sample of
5000 cups from each production lot shall be subjected to a workability test
(see 6.1.7). Occurrence of any punch-outs, point diameter variations or other
failure to comply with 3.4 shall be cause for rejection of the sample or lot
as applicable.
4.5.4.3 Performance. -A sample of 300 bullet jackets, fabricated under
4.5.4.2, shall be assembled into cartridges; these shall be tested for
stripping. Occurrence of stripping on any bullet shall be cause for rejection
of the lot.
4.5.5 Packaging, packing and marking inspection. -Inspection for packaging,
packing and marking shall be as directed by the contracting officer.
4.5.6 Inspe ction equipnent. - The examinations shall be made using
commercial measuring equipment with a precision of 10 percent of the tol-
erance on the product dimension.
4.6 Test methods and procedures.
4.6.1 Hardness. -Each cup selected for this test shall be sectioned
The copper alloy cladding shall be removed and any surface
longitudinally
effect removed by grinding or polishing. The specimen shall then be mounted
on a flat anvil with the concave surface upward and readings taken near the
center of the sidewall. The test shall be conducted In accordance with
Method 243.1 in Federal Test Methods Standard No. 151
4.6.2 Workability . -The workability test shall comprise all of the
process produc tion operations used in the manufacture of the bullet jacket
(ace 6.4).
4.6.3 performance.-The stripping test shall be performed in accordance
with AMSMU-P 715-501FA1.
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