MIL-DTL-45225F(MR)
Minimum ballistic limits (protection at 0o obliquity) for
TABLE VIII.
type I, class A material using caliber .50 AP, M2
projectile.1/
Thickness,
Required
Thickness,
Required
Thickness,
Required
inches
BL(P)fps
inches
BL(P)fps
inches
BL(P)fps
1.675
1808
1.875
1968
2.080
2100
1.680
1812
1.880
1972
2.085
2102
1.685
1816
1.885
1976
2.090
2105
1.690
1820
1.890
1980
2.095
2108
1.695
1824
1.895
1984
2.100
2111
1.700
1828
1.900
1988
2.105
2114
2/1.701
1829
1.905
1991
2.110
2116
1.705
1832
1.910
1995
2.115
2119
1.710
1836
1.915
1999
2.120
2122
1.715
1840
1.920
2003
2.125
2125
1.720
1844
1.925
2007
2.130
2127
1.725
1848
1.930
2011
2.135
2130
1.730
1852
1.935
2015
2.140
2133
1.735
1856
1.940
2019
2.145
2136
1.740
1860
1.945
2023
2.150
2138
1.745
1864
1.950
2027
2.155
2141
1.750
1868
1.955
2030
2.160
2144
1.755
1872
1.960
2032
2.165
2147
1.760
1876
1.965
2035
2.170
2149
1.765
1880
1.970
2038
2.175
2152
1.770
1884
1.975
2041
2.180
2155
1.775
1888
1.980
2043
2.185
2158
1.780
1892
1.985
2046
2.190
2160
1.785
1896
1.990
2049
2.195
2163
1.790
1900
1.995
2052
2.200
2166
1.795
1904
2.000
2054
2.205
2168
1.800
1908
2.005
2057
2.210
2171
1.805
1912
2.010
2060
2.215
2174
1.810
1916
2.015
2063
2.220
2176
1.815
1920
2.020
2066
2.225
2179
1.820
1924
2.025
2069
2.230
2182
1.825
1928
2.030
2072
2.235
2184
1.830
1932
2.035
2074
2.240
2187
1.835
1936
2.040
2077
2.245
2190
1.840
1940
2.045
2080
2.250
2193
1.845
1944
2.050
2083
2.255
2195
1.850
1948
2.055
2086
2.260
2198
1.855
1952
2.060
2088
2.265
2201
1.860
1956
2.065
2091
2.270
2203
1.865
1960
2.070
2094
2.275
2206
1.870
1964
2.075
2097
2.280
2209
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