MIL-DTL-46593B (MR)
ASME INTERNATIONAL
ASME B46.1
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Surface Texture, (Surface Roughness, Waviness and Lay)
(DoD Adopted)
(Copies of this document are available from www.asme.org or ASME International, Three Park
Avenue, New York, NY 10016-5990)
ASTM INTERNATIONAL
ASTM A751
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Steel Products, Practices, and Terminology for Chemical
Analysis of. (DoD Adopted)
(Copies of these documents are available from www.astm.org or ASTM International, 100 Barr
Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959.)
2.4 Order of precedence. In the event of a conflict between the text of this document and the
references cited herein, the text of this document takes precedence. Nothing in this document,
however, supersedes applicable laws and regulations unless a specific exemption has been
obtained.
3. REQUIREMENTS
3.1 Material Composition. The fragment-simulating projectile (FSP) shall be manufactured
from cold rolled, annealed steel conforming to compositions 4337H or 4340H for the following
FSPs: Caliber .22 Type 1; Caliber .30; Caliber .50; and 20MM. The Caliber .22 Type 2 FSP
shall be manufactured as stated above or from other steels that are capable of hardness
uniformity within hardness values indicated in Table I.
3.2 Hardness. The fragment-simulating projectile shall be fully quenched and tempered to a
Rockwell hardness value as shown in Table I.
TABLE I - Hardness
PROJECTILE
ROCKWELL HARDNESS C
Caliber .22 Type 1
30 +/- 1
Caliber .22 Type 2
27 +/- 3
Caliber .30
30 +/- 1
Caliber .50
30 +/- 1
20MM
30 +/- 1
3.3 Weight. The fragment-simulating projectiles shall be of the weight shown in Table II. For
those designs that will utilize a saboted fragment-simulating projectile the mass shall be as
specified in Table III.
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