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MIL-DTL-12560 Armor Plate, Steel, Wrought, Homogeneous \(For Use In Combat-Vehicles And For Ammunition Testing\)This specification covers wrought-steel homogeneous armor plate for ordered thicknesses from 0.098 inch \(2.5 mm\) up to an ordered thickness of 6.000 inches \(152.4 mm\), inclusive, for use in combat-vehicles and for ordered thicknesses from 0.250 inches \(6.35 mm\) up to an ordered thickness of 12.000 inches \(304.8 mm\), inclusive, for use in proof and acceptance testing of armor defeating ammunition \(see 6.1, 6.2, and 6.3.3\).

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MIL-DTL-12560K (MR)

APPENDIX A

TABLE A-X. Minimum required ballistic limits (protection criteria) for class 2 armor, firing

obliquity: 0�, projectile: 20 mm FSP - Continued.

Thickness,

Required

Thickness,

Required

Thickness,

Required

inches

BL(P), ft/sec

inches

BL(P), ft/sec

inches

BL(P), ft/sec

1.000 2

0.890

3411

0.945

3593

3775

0.895

3427

0.950

3609

1.005

3792

0.900

3444

0.955

3626

1.010

3808

0.905

3460

0.960

3643

1.015

3825

0.910

3477

0.965

3659

1.020

3841

0.915

3494

0.970

3676

1.025

3858

0.920

3510

0.975

3692

1.030

3874

0.925

3527

0.980

3709

1.035

3891

0.930

3543

0.985

3725

1.040

3907

0.935

3560

0.990

3742

1.045

3924

0.940

3576

0.995

3758

1.050

3941

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.