MIL-DTL-12560K (MR)
APPENDIX A
TABLE A-I. Minimum required V50 ballistic limits (protection criteria) for class 1 and 4 armor,
firing obliquity: 30°; projectile: caliber .30 M2 ball. (Continued)
Required
Required
Thickness,
Thickness,
BL(P), ft/sec
BL(P), ft/sec
inches
inches
CLASS 1 & 4
CLASS 1 & 4
0.186
2261
0.215
2393
0.187
2266
0.216
2398
0.188
2271
0.217
2402
0.189
2275
0.218
2407
0.190
2280
0.219
2411
0.191
2285
0.220
2416
0.192
2289
0.221
2420
0.193
2294
0.222
2424
0.194
2298
0.223
2428
0.195
2303
0.224
2433
0.196
2308
0.225
2437
0.197
2312
0.226
2441
0.198
2317
0.227
2446
0.199
2321
0.228
2450
0.200
2326
0.229
2454
0.230 2/
0.201
2330
2459
0.202
2335
0.231
2463
0.203
2339
0.232
2467
0.204
2344
0.233
2472
0.205
2348
0.234
2476
0.206
2353
0.235
2480
0.207
2357
0.236
2484
0.208
2362
0.237
2489
0.209
2366
0.238
2493
0.210
2371
0.239
2497
0.211
2375
0.240
2501
0.212
2380
0.241
2506
0.213
2384
0.242
2510
0.214
2389
0.243
2514
2/
Specification requirements end for this ordered thickness.
Note: Tabulated values on either side of the specification requirements are for interpolation
of BL(P) requirements on undersize or oversize plates.
30
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