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4 inch up to and including 4 inches for type I, class B forgings. Type II forging thicknesses should be as specified \(see 6.2\).

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MIL-DTL-45225F(MR)

Minimum ballistic limits (protection at 0o obliquity) for type I,

TABLE IX.

class B material and type II material using a caliber .50 FSP.1/

Thickness,

Required

Thickness,

Required

Thickness,

Required

inches

BL(P)fps

inches

BL(P)fps

inches

BL(P)fps

0.700

1550

0.815

1996

0.930

2560

.705

1567

.820

2018

.935

2587

.710

1584

.825

2040

.940

2615

.715

1602

.830

2063

.945

2643

.720

1620

.835

2085

.950

2672

.725

1638

.840

2108

.955

2700

.730

1656

.845

2131

.960

2730

.735

1675

.850

2154

.965

2759

.740

1693

.855

2178

.970

2788

.745

1712

.860

2201

.975

2818

2/ .750

1731

.865

2225

.980

2849

.755

1750

.870

2249

.985

2879

.760

1770

.875

2274

.990

2910

.765

1789

.880

2299

.995

2941

.770

1809

.885

2324

1.000

2972

.775

1829

.890

2349

1.005

3004

.780

1849

.895

2374

1.010

3036

.785

1870

.900

2400

1.015

3069

.790

1890

.905

2426

1.020

3102

.795

1911

.910

2452

1.025

3135

3/ 1.030

.800

1932

.915

2479

3168

.805

1953

.920

2505

1.035

3202

.810

1975

.925

2532

1.040

3236

1.045

3270

_________________________________________________________________________________

1/ FSP denotes fragment simulating projectile.

Spec. requirements for this test end at ordered thickness of 0.750 inches.

Spec. requirements for this test end at ordered thickness of 1.030 inches.

NOTE: Thickness less than (see footnote 2/) and greater than (see footnote 3/)

is a requirement for undersize or oversize forgings.