MIL-DTL-32505
APPENDIX B
TABLE B-III. Minimum required ballistic limits 20mm fragment
simulating projectiles at 0° obliquity.
Required
Required
Required
Thickness,
Thickness,
Thickness,
BL(P), fps
BL(P), fps
BL(P), fps
inches
inches
inches
Class I Class II
Class I Class II
Class I Class II
0.930
1284
TBD
1.100
1623
TBD
1.270
2052
TBD
0.935
1293
TBD
1.105
1634
TBD
1.275
2066
TBD
0.940
1302
TBD
1.110
1645
TBD
1.280
2080
TBD
0.945
1311
TBD
1.115
1657
TBD
1.285
2094
TBD
0.951 1/
1321
TBD
1.120
1668
TBD
1.290
2109
TBD
0.955
1329
TBD
1.125
1680
TBD
1.295
2123
TBD
0.960
1338
TBD
1.130
1691
TBD
1.300
2138
TBD
0.965
1347
TBD
1.135
1703
TBD
1.305
2153
TBD
0.970
1356
TBD
1.140
1715
TBD
1.310
2168
TBD
0.975
1366
TBD
1.145
1727
TBD
1.315
2183
TBD
0.980
1375
TBD
1.150
1739
TBD
1.320
2198
TBD
0.985
1385
TBD
1.155
1751
TBD
1.325
2213
TBD
0.990
1394
TBD
1.160
1763
TBD
1.330
2228
TBD
0.995
1404
TBD
1.165
1775
TBD
1.335
2244
TBD
1.000
1414
TBD
1.170
1787
TBD
1.340
2259
TBD
1.005
1424
TBD
1.175
1800
TBD
1.345
2275
TBD
1.010
1433
TBD
1.180
1812
TBD
1.350
2291
TBD
1.015
1443
TBD
1.185
1825
TBD
1.355
2307
TBD
1.020
1453
TBD
1.190
1837
TBD
1.360
2323
TBD
1.025
1463
TBD
1.195
1850
TBD
1.365
2339
TBD
1.030
1473
TBD
1.200
1863
TBD
1.370
2355
TBD
1.035
1484
TBD
1.205
1876
TBD
1.375
2371
TBD
1.040
1494
TBD
1.210
1889
TBD
1.380
2388
TBD
1.045
1504
TBD
1.215
1902
TBD
1.385
2404
TBD
1.050
1515
TBD
1.220
1915
TBD
1.390
2421
TBD
1.055
1525
TBD
1.225
1928
TBD
1.395
2437
TBD
1.060
1536
TBD
1.230
1941
TBD
1.400
2454
TBD
1.065
1546
TBD
1.235
1955
TBD
1.405
2471
TBD
1.070
1557
TBD
1.240
1968
TBD
1.410
2488
TBD
1.075
1568
TBD
1.245
1982
TBD
1.415
2506
TBD
1.080
1579
TBD
1.250
1996
TBD
1.420
2523
TBD
1.085
1590
TBD
1.255
2010
TBD
1.425
2540
TBD
1.090
1601
TBD
1.260
2023
TBD
1.430
2558
TBD
1.095
1612
TBD
1.265
2037
TBD
1.435
2576
TBD
1/
Specification requirements begin for this ordered thickness.
Note: Tabulated values on either side of the ordered thicknesses are for interpolation of BL(P) requirements on
undersize or oversize plates.
20
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