MIL-DTL-12235A (MR)
movable ram of the press and both on a common center line. The press shall be fitted with
indicators to show the pressure on the ram and the motion of the ram. The band seating shall be
inspected between the indentors by measuring the travel of the indentors during application of
pressure. Care must be taken not to take readings until after full pressure has been applied and
the motion of the ram has ceased as shown by the dial indicator (see 6.5). Measurements shall be
taken in two planes approximately ninety degrees apart. The pressures used (10,000 p.s.i.) shall
be great enough to seat the band under the indentors, but not so great that permanent deformation
of the shot occurs. The band seating shall be inspected by pressing the band between the
indentors and measuring the diameter of the rotating band in each plane before and after
applications of the pressure. The difference in the two diametral readings shall be the sum of the
clearances under the band at two points in one plane. The average of the readings in the two
planes shall not exceed 0.008 inches. The impression left by the indentors shall not be cause for
rejection of the shot. This test shall be preformed by the contractor on samples of sufficient size
and frequency to assure adequate process control of the band seating.
4.4.3.1.3 Character of seating. Each band removed in accordance with this paragraph shall be
examined for character of seating as well as to determine whether corners of the band seats have
been properly filled (see 6.4).
4.4.3.2 Retest. A retest may be made at the request of the contractor. If failure occurs in the
retest, the group of projectiles represented by the samples may be re-banded and resubmitted for
test.
4.4.4 Tests for soundness.
4.4.4.1 Macro inspection. One full cross-sectional sample shall be taken from each bar stock
and shall be macro-etched in accordance with ASTM E381 and examined for compliance with
3.1.1.2. If soundness of the macro-etched sample does not meet the requirements of 3.1.1.2 (or
as specified in the contract or purchase order (see 6.2)), the bar shall be subject to rejection.
Portions of the bar may be resubmitted for inspection under this test, provided the contractor can
show to the satisfaction of the inspector that the part or parts containing injurious defects have
been removed.
4.4.4.2 Visual inspection. After finish-machining, each projectile shall be inspected visually for
cracks, piping, seams, porosity, and other injurious defects. All projectiles showing such defects
shall be subject to rejection.
4.4.5 Mechanical properties. Tension test specimens shall be prepared and tested in accordance
with ASTM B557and shall be in compliance with the mechanical properties requirement of
3.1.2.3.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the
contract or order (see 6.2 and 6.7). When packaging of materiel is to be performed by DoD or in-
house contractor personnel, these personnel need to contact the responsible packaging activity to
ascertain packaging requirements. Packaging requirements are maintained by the Inventory
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