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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-III. Minimum required ballistic limits (protection criteria) for class 1 and 3 armor and the

upper ballistic limits for class 3 armor; firing obliquity: 0�, projectile: caliber .50 M2 AP-

Continued.

BL(P), ft/sec

Thickness,

CLASS

inches

1&3

Min

Max

0.995

2673

2819

1.065

2775

2921

1.135

2874

3020

1.000

2680

2826

1.070

2782

2928

1.140

2881

3027

1.005

2688

2834

1.075

2790

2936

1.145

2888

3034

1.010

2695

2841

1.080

2797

2943

1.150

2895

3041

1.015

2702

2848

1.085

2804

2950

1.155

2902

3048

1.020

2710

2856

1.090

2811

2957

1.160

2909

3055

1.025

2717

2863

1.095

2818

2964

1.165

2915

3061

1.030

2724

2870

1.100

2825

2971

1.170

2922

3068

1.035

2732

2878

1.105

2832

2978

1.175

2929

3075

1.040

2739

2885

1.110

2839

2985

1.180

2936

3082

1.045

2746

2892

1.115

2846

2992

1.185

2943

3089

1.050

2754

2900

1.120

2853

2999

1.190

2949

3095

1.125 2/

1.055

2761

2907

2860

3006

1.195

2956

3102

1.060

2768

2914

1.130

2867

3013

1.200

2963

3109

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.