1、 MIL-DTL-46063HAmendment 212 June 2000 SUPERSEDINGMIL-DTL-46063H(1)26 August 1999DETAIL SPECIFICATIONARMOR PLATE, ALUMINUM ALLOY, 7039This amendment forms a part of MIL-DTL-46063, dated 14 September 1998, and isapproved for use by all Departments and Agencies of the Department of Defense.PAGE 43.7.1
2、1 Thickness. Footnote 1/ Delete the Derived plus tolerance “0.000 inch” value cited in line 4 ofthe illustrative example and replace it with a Derived plus tolerance value of “0.060 inch”.Footnote 1/ A new substituted replacement demonstrates the calculation for the allowed “Plus” thickness. This n
3、ew example illustrates the plus tolerance on a 1.000 inch thick by 73.000 inch wide plate as follows:Thickness tolerance (from ANSI H35.2) + 0.047 inchTolerance value shown in minus column 0.035 inchFull tolerance less minus tolerance 0.094 inch 0.035 inch = 0.059 inchDerived plus tolerance 0.059 in
4、chPAGE 11A.3.1 Delete entire paragraph and substitute the following new paragraph:“A.3.1 Complete penetration, CP (P). A complete penetration occurs when the impacting projectile,or any fragment thereof, or any fragment of the test specimen passes beyond the back of the test plate andperforates the
5、witness plate, resulting in a crack or hole which permits light passage when a 60-watt, 110-voltbulb is placed behind and proximate to the witness plate. In addition, any backspall which is dislodged off theback of the plate by a fragment-simulating projectile impact and which hits the witness sheet
6、 will be consideredto be complete penetration whether or not the witness sheet is perforated.A.3.4 Insert the word “fair” after the first word in the first sentence, which followsthe title paragraph heading “A3.4 Partial penetration, (PP).” The replacement paragraph will nowread as follows: “A3.4 Pa
7、rtial penetration, PP (P). Any fair impact which is not a complete penetration should beconsidered a partial penetration.”AMSC N/A 1 of 2 FSC 9535INCH-POUNDProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-46063HAmendment 22PAGE 11A.3.5 Delete
8、entire paragraph and substitute the following new paragraph:“A.3.5 Witness plate. A witness plate is normally a 0.14 inch thick sheet of 5052 H36 aluminum alloy(or a 0.020 inch thick sheet of 2024-T-3 aluminum alloy) placed six inches (+ inch) behind and parallel tothe test plates or other ballistic
9、 sample.PAGE 16TABLE A-III. MINIMUM required ballistic limits - 20-mm fragment simulating projectilesat 0O obliquity. Insert in the second column under “Thickness, in.,” “1.305” and insert underthe corresponding “Required BL(P), fps,” in column 4, “2028.”Custodians: Preparing Activity: Army - MRArmy - MRNavy - ASAir Force - 11 Project 9535-0641DLA ISProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
