MIL-DTL-45225F(MR)
Minimum ballistic limits (protection at 0o obliquity) for
TABLE VII.
type I, class A material using .30 Caliber AP, M2.1/
Thickness,
Required
Thickness,
Required
Thickness,
Required
inches
BL(P)fps
inches
BL(P)fps
inches
BL(P)fps
1.031
1814
2/1.101
1880
1.485
2245
1.620
2367
1.350
2115
1.490
2249
1.625
2371
1.355
2120
1.495
2254
1.630
2375
1.360
2125
1.500
2259
1.635
2379
1.365
2129
1.505
2263
1.640
2384
1.370
2134
1.510
2267
1.645
2388
1.375
2140
1.515
2272
1.650
2393
1.380
2145
1.520
2276
1.655
2397
1.385
2150
1.525
2281
1.660
2401
1.390
2154
1.530
2286
1.665
2406
1.395
2159
1.535
2291
1.670
2410
1.400
2164
1.540
2296
1.675
2415
1.405
2169
1.545
2300
1.680
2419
1.410
2174
1.550
2305
1.685
2423
1.415
2178
1.555
2309
1.690
2427
1.420
2183
1.560
2313
1.695
2432
3/ 1.700
1.425
2188
1.565
2318
2436
1.430
2193
1.570
2323
1.705
2440
1.435
2198
1.575
2327
1.710
2445
1.440
2202
1.580
2332
1.715
2449
1.445
2207
1.585
2336
1.720
2453
1.450
2211
1.590
2341
1.725
2457
1.455
2216
1.595
2345
1.730
2462
1.460
2221
1.600
2350
1.735
2467
1.465
2226
1.605
2354
1.740
2471
1.470
2231
1.610
2359
1.745
2475
1.475
2235
1.615
2363
1.750
2479
1.480
2240
_________________________________________________________________________________
1/ AP, M2 denotes armor piercing model 2 projectile.
2/
Spec. requirements for this test start at ordered thickness of 1.101 inches.
Interpolation is done to determine the requirement for thickness between
1.031 and 1.350 inches.
3/
Spec. requirements for this test end at ordered thickness of 1.700 inches.
NOTE:
Numbers above (see footnote 3/) are requirements for oversize forgings.
15
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