MIL-DTL-32505
TABLE V. Acceptance ballistic test plates.
Angle of
Ordered
CLASS I
CLASS II
Obliquity in
TABLE
Thickness,
Projectile
(7017)
(7020)
Degrees
Inches
1/
0.500 - 0.749
Cal. .30 AP M2
30
B-I
Listed
TBD
1/
0.750 - 0.950
Cal. .50 FSP
0
B-II
Listed
TBD
1/
0.951 - 1.500
20-mm FSP
0
B-III
Listed
TBD
1/
0.750 - 1.500
Cal. .30 AP M2
0
B-IV
Listed
TBD
1/
1.501 - 2.500
Cal. .50 AP M2
0
B-V
Listed
TBD
1/
2.501 - 3.500
14.5-mm BS41
0
B-VI
Listed
TBD
TBD 1/
1/
3.501 4.000
20-mm M602
0
B-VII
TBD
1/
To be determined.
4.7.3.2 Incomplete penetrations. When a complete penetration cannot be obtained, the following
rule shall be in effect until a new ballistic acceptance round can be developed and utilized. When
the ballistic velocities of four (4) partial penetrations are above the minimum ballistic requirement
for the specific thickness, the material shall be certified as acceptable with a V50 (which obviously
cannot be explicitly determined) above the minimum requirement.
4.7.4 Stress Corrosion. Short transverse stress corrosion test specimens shall be prepared and
tested in accordance with procedure outlined in ASTM G38 and ASTM G47. The specimens shall
be stressed to 35 ksi. Nine specimens shall be tested per sample per lot. A maximum delay of 3
hours between stressing and initiation of stress corrosion test is permitted.
4.8 Rejection and retest. Unless otherwise specified in the contract or purchase order (see 6.2) and
except as specified in 4.7.2 and 4.7.3, rejection and retest shall be conducted in accordance with
4.8.1, 4.8.1.1, 4.8.2, and 4.8.3.
4.8.1 Rejection of first article plates. When one or more first article test specimens fail to meet the
requirements of 4.3, the product lot and process, represented by the test plates or specimens shall be
subject to rejection except as otherwise provided in a sampling plan approved by the procuring
activity and in requirements of 4.8.1.1.
4.8.1.1 Retest of first article samples. Resubmission and retest of first article samples shall not be
made until the manufacturer has made necessary corrections in the processing of the material to the
satisfaction of the procuring activity. If one of the retest specimens fails the lot shall be
permanently rejected with no further testing permitted.
4.8.2 Ballistic. Rejection and retest of ballistic test plates shall be in accordance with B.5.2.
4.8.3 Stress corrosion. Immediately upon notification of the failure of the stress corrosion
specimens, the manufacturer may at their expense submit thirteen additional specimens for
retesting. A minimum of seven specimens out of the thirteen additional specimens shall show no
cracks upon examination at the end of 96 hours when tested as specified in 4.7.4. If the retest also
fails, the manufacturer may elect to resubmit the lot after retreatment of the entire lot. After
retreatment, the lot must pass the requirements outlined in 4.7.2, 4.7.3 and 4.7.4.
10
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business