MIL-DTL-46083D(MR)
APPENDIX A
TABLE A-II. Minimum required ballistic limits for class I armor extrusions
(protection at 0° obliquity) - 20 mm FSP projectile.
_______________________________________________________________________________
Thickness
Required
Thickness
Required
Thickness
Required
Inches
BL(P), fps
Inches
BL(P), fps
Inches
BL(P), fps
0.970
1310
1.185
1663
1.400
2101
0.975
1317
1.190
1672
1.405
2112
0.980
1325
1.195
1681
1.410
2124
0.985
1332
1.200
1690
1.415
2135
0.990
1340
1.205
1700
1.420
2147
0.995
1347
1.210
1709
1.425
2158
1/ 1.000
1355
1.215
1718
1.430
2170
1.005
1362
1.220
1728
1.435
2182
1.010
1370
1.225
1737
1.440
2193
1.015
1378
1.230
1747
1.445
2205
1.020
1385
1.235
1756
1.450
2217
1.025
1393
1.240
1766
1.455
2229
1.030
1401
1.245
1776
1.460
2241
1.035
1409
1.250
1785
1.465
2253
1.040
1417
1.255
1795
1.470
2265
1.045
1424
1.260
1805
1.475
2277
1.050
1432
1.265
1815
1.480
2290
1.055
1440
1.270
1825
1.485
2302
1.060
1448
1.275
1835
1.490
2314
1.065
1456
1.280
1845
1.495
2327
1.070
1465
1.285
1855
1.500
2339
1.075
1473
1.290
1865
1.505
2352
1.080
1481
1.295
1875
1.510
2364
1.085
1489
1.300
1885
1.515
2377
1.090
1497
1.305
1895
1.520
2390
1.095
1506
1.310
1906
1.525
2403
1.100
1514
1.315
1916
1.530
2416
1.105
1522
1.320
1927
1.535
2429
1.110
1531
1.325
1937
1.540
2442
1.115
1539
1.330
1948
1.545
2455
1.120
1548
1.335
1958
1.550
2468
1.125
1556
1.340
1969
1.555
2481
1.130
1565
1.345
1979
1.560
2494
1.135
1574
1.350
1990
1.565
2508
1.140
1582
1.355
2001
1.570
2521
1.145
1591
1.360
2012
1.575
2535
1.150
1600
1.365
2023
1.580
2548
1.155
1609
1.370
2034
1.585
2562
1.160
1618
1.375
2045
1.590
2575
1.165
1627
1.380
2056
1.595
2589
1.170
1636
1.385
2067
1.600
2603
1.175
1645
1.390
2078
1.605
2617
1.180
1654
1.395
2089
1.610
2631
15
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