1、MIL-P-bOBLi 13 W 777770b 03i3283 L 3M37-oLdx- MIL- P-60814 (MU) i7 April 1967 SUPERSEDSNG FA-PD-MI-2660, Rev. O 30 April i965 MILITARY SPECIFICATION PROJECTILE, AP-T, goMM, 3181 METAL PARTS 1. SCOPE 1.1 This specification covers Projectile, AP-T, goMM, M318A1, Metal Parts. 2. APPLICABLE DOC-S 2.1 Th
2、e following documents of the issue in effect on date of invitation for bids, or request for extent specified herein. proposals, form a part of this specification to the SPECIFICATIONS Military MIL-A-2550 - MIL-M-11472 - Ammunition and Special Weapons, General Specification Magnetic Particle Inspecti
3、on, Process for Ferromagnetic for Materials STANDARDS Federal Federal Test Method Standard No. i41 - Paint, Varnish, Lacquer and Federal Test Method Standard No. i51 - Metals: Test Method Related Materials , Methods of Inspection, Sampling and Testing Military MIL-STD-105 - MIL-STD-109 - MIL-STD-410
4、 - MIL-STD- - MIL-STD- - MIL-STD-Il69 - MIL-STD-1235 - Sampling Procedures and Tables for Inspection by Quality Assurance Terms and Definitions Certification of Penetrant Inspection Personnel Ammunition Data Card Lot Numbering of Ammunition Packaging, Packing and Marking for inert ammunition Single
5、and Multilevel Continuous Sampling Procedures Attributes Components and Tables for Inspection by Attributes B THfS DOCUMENT CONTAINS PAGES. FSC 1315 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-bL4 13 7997906 0341282 3 E MIL-P-60814( MU) 2.1
6、 (Contd) DRANINGS Munitions Command F10522523 BO597489 u548604 Ia10522523 D8593429 - Projectile, 9oMM, AP-T M318A1 Metal Parts - Plug and Disc Assembly - Pallet, for Fixed and Semifixed Projectile, Packaging and Marking Index of Inspection Equipment List for Projectile, AP-T, gCMM, M318A1, Metal Par
7、ts - Band seating testing machine indentor and test data. PUBLICATIONS Munitions Command Operating Instructions for Use of Detroit Testing Machine for PA- PD- 792 Band Seating Inspection - Equipment, Testing or Measuring for Ammunition Items (Copies of specifications, standards , drawings , and publ
8、ications required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer. ) 2.2 Other Publications.-The following documents form a part of this specification to the extent specified herein. Unless othe
9、rwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. ASA - B46.1 - Surface Texture, Surface Roughness, Waviness and Lay Technical society and technical association specifications and standards are generally available for reference from libraries. T
10、hey are also distributed among technical groups and using Federal agencies. 3. REQUIREMENTS 3.1 General.,Visual be performed in 4.3.3.1 .Magnetic Particle (Major Defect) .-Each projectile body shall .be.-subjected to a magnetic particle test to determine compliance with 3.2.1. body. Failure of any b
11、ody to comply shall be cause for rejection of the 4.3.3.2 Mechanical Properties. 4.3.3.2.1 Body.-Hardness Pattern - One projec%ile body shall be - selected from each heatof steel in the lot, be used to develop the hardness pattern required by 3.4.c. * 4.3.3.2.2 Rotating Bandi-One projectile body ass
12、embly, after banding but prior to machining of the rotating band, shall be selected from each 8-hour production or fraction thereof for each banding machine in operation to determine compliance with 3.3.2. Failure of the band to comply shall be cause for rejection of the production represented by th
13、e sample. 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-bOL9 13 m 79774Ob 0343272 b m 4.3.3.3 Band Seating. 4.3.3.3.1 Tightness.-Ten projectiles from each 1-hour production or fraction thereof per banding machine in operation shall be subj
14、ected to this test to determine compliance with 3.5.4. for rejection of the production processed since the last acceptable test was performed. Failure to comply shall be cause 4.3.3.3.2 Sidewall Contact. -Rotating bands removed as specified under Failure to 4.3.3.2.2 shall be examined to determine c
15、ompliance with 3.5.3. comply shall be cause for rejection of body assemblies represented by the sample. 4.3.3.4 Protective Coating.-The sample size and acceptance criteria for the inspection of the cleaning and the application of the protective coating sh- be as specified in the applicable specifica
16、tion. to comply with the requirements shall be cause for taking the corrective action recommended therein. Failure 4.3.3.5 Assembly (Major Defect).-Each shot assembly shll be visually Failure of any assembly to comply shali be cause for rejection examined to determine compliance with the applicable
17、assembly drawing (10522325). of the assembly. 4.3.4 the Government: Functional.-The following functional tests will be performed by ,. TABLE I Sample Size Test Phase Initial Production Sample Production Sample Penetration Security Velo city-Accuracy 9 10 10 9 5 5 4.3.4.1 Penetration.-The samples sel
18、ected in accordance with Table I will be subjected to this test, to determine compliance with 3.6.1. of any projectile to comply will be cause for rejection of the lot. Failrqe 4.3.4.2 Security.-The samples selected in accordance with Table I, for this phase will be subjected to this test to determi
19、ne compliance with 3.6.2. rejection of the lot. Failure of any projectile to .comply will be cause for 12 . .-;. - -. t: -.:- * - .* . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-hOL9 13 W 9977906 0391293 13 M MIL-P-60814 ( MU) 4.3.4.3 Velo
20、city-Accuracy.-The samples selected in accprdance with Table 1 for this phase will be subjected to this test for information only, except that failwe of any projectile in this seple to comply with 3.62 Will be cause for rejection of-the lot. 4.3.5 Inspection Equipment. -Index of inspection equipment
21、 list . IEL 10522523 identifies the inspection equipment required to perform the examinations and tests prescribed herein, . 4.4 Test Methods and Procedures. 4.4.1 Magnetic particle (major defect) .-The procedures for performing this test shall. be as specified in MIL-M-11472, for direct magnetizati
22、on by the residual method. The suspension shall be tested at the start of each days production and at intervals of not over 4 hours of cntinuous operation, utilizing the procedures and equipment prescribed by MIL-M-11472. After performing the test for solid content of suspension, if it is determined
23、 that it does not comply, with 3.7.3.2 of MIL-M-11472, all bodies that have been accepted since the last satisfactory test was performed, shail be re-inspected after the suspension has been brought up to the proper level. A magnetizing current of 1200 + 50 amperes is required. Either direct current
24、(DC) or alternating curyent (AC) may be used in magnetizing the sample under examination. When using the A.C. method, the current should be cut off at the first quarter (90 degrees) of the A.C. sine-wave to insure that the body is magnetized after acceptance. The body shall. be stamped with the lett
25、er “M“ to signify complhce with 3.2.1. The magnetic particle inspection shall be performed on eqdpment that complies with the requirements of Specification PA-PD-792. The operator(s) of the equipment and the inspector(s) making the deter- mination shall be certified in accordance with MIL-STD-410. 4
26、.4.2 Mechanical Properties. 4.4.2.1 Body Hardness Pattern.-The sample provided by 4.3.3.2.1 shall be sectionized by removing a ful length and width specimen approximately 1-inch thick from middiameter of the projectile, required by 3.4 shaU be developed utilizing the Rockwell “C scale (diamond brail
27、). prescribed in Federal Test Method Standard No. 151. The hardness pattern The equipment and procedures for performing this test shall be as 4.4.2.2 Rotating Band.-The samples selected in accordance with 4.3,3,2,2 shal have the machined rotating band removed from the body and carewly flattened with
28、out hammering. cut along the direction of the flattened length and prepared in such a manner as to hold to a minimum any additional cold working. The sample shall be tested in accordance with the criteria for performing the tension test as prescribed by Federal Test Method Standard No. 151, The tens
29、ion test specimen shall be Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-P-bOL4 13 7797906 0341294 T MIL-P-O(MU) 4.4.3 Band Seating. 4.4.3.1 Tightness.-The samples provided in 4.3.3.3.1 shall be tested -.- utilizing the eqwpaent and procedures
30、 prescribed in Frankford Arsenal Detroit Testing machine manual (see 6.1) and line 12 of Drawing 08593429, Revision D. 4.4.3.2 Sidewall Contact.-The sample provided by 4.3.3.3.2 shall be examined for fill of the band seat undercut. Care must be exercised in removai of the band to prevent deformation
31、 of material which was swaged into the band seat undercut. 4.4.4 Protective Coating.-The procedures for cleaning the components and assemblies and the application of protective coating shaU be in accordance with the criteria for testing as specified in the applicable specification, except that the s
32、alt spray prescribed shall be performed as specified on the applicable drawing, utilizing the equipment in compliance with Federal Test Method Standard No. 141. 4.4.5 Functional 4.4.5.1 Penetration.-Prior to firing penetration samples, the protective ballistic limit (PBL) of a reserve reference lot
33、of the same caliber and model will be determined. include 3 complete and 3 partial penetrations, the velocity spread of which shall not exceed 150 fps. lot, the PBL of the test lot shall be determined as indicated above utilizing samples selected in accordance with Table I. assembled into complete r
34、ounds utilizing the service charge. The rounds will be fired in a gun for which it is standard, against 3-inch thick homogenious armorplate placed approximately 300 ft. fromthe muzzle of the gun and at an obliquity of 55 degrees. A complete penetration will be considered to have occurred if a fragme
35、nt of the plate or projectile is thrown beyond the rear face of the plate with sufficient energy to penetrate an 0.020-inch aluminum alloy (24st) sheet, or its equivalent, placed parallel to and one foot behind the plate. that these conditions are being complied with without the use of a sheet, the
36、sheet maybe omitted. will be disregarded and another sample fired in its place: The PBL is defined as the mean of 6 velocities - to Following determination of the PEL of“the reference Sample projectiles will be When, in the proof officers opinion, it is possible to observe An impact which occurs und
37、er the foliowing conditions a. Any projectile which strikes within2calibers of the edge of the plate. b. Any projectile which strikes within 2 calibers of a previous impact or whose path of penetration intersects a previous hole. c. Any projectile which strikes the spalled area of a previous impact.
38、 14 . . . . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-bOLLl 13 = 779790b 03Ll3295 1 MIL-P-60814 (MU) 4.4.5.2 Security.-The smples provided by Table I assembled into complete rounds will be fired in a gun for which the round is standard. T
39、he propellant charge wiil be adjusted to obtain i15 percent of the maximum rated pressure of the round in a new gun. be fired through 2 canvass or heavy muslin screens placed.approximately 2000 meters from the muzzle .of the gun. evidence -of loss or breakup of any ponent, either in the gun bore or
40、in fiight A smear camera located near the muzzle will.be used to verify security on the initial production sample and on the first five production lots. windshield. .Observation for paint on the cloth targk will be-made for windshield security. 2000 meter range. The projectile will Observation will
41、be made for Prior to firing, paint will be applied to the Lot acceptance will be based on observationat the 4.4.5.3 Velocity-Accuracy.-The samples prodded by Table I assembled into complete rounds will be fired in a gun for which the round is - standard, utilizing the service charge. impact on a ver
42、tical target placed 2000 meters from the muzzle of the gun. The test rounds will be fired alternately with a similar group of reference rounds for comparison of velocity-accuracy at this range. terms of maximum spread in inches, both horizontal and vertical and probable error (PE) in MILS, will be r
43、ecorded for all rounds fired and forwarded to the cognizant technical agency for evaluation (See 6.3). The projectile will be fired to Accuracy in 5. PREPARATION FOR DELIVERY 5.1 Packing and Marking. 5.1.1 Level C. - Packing and marking shall be in accordance with Drawing F754-d MIL-STD-ll.69. 5.1.2
44、 Level C. - Plug and disc assembly, Drawing B8597489 shall be packed in accordance with MIL-STD-1169. Pack 2000 in 2 layers arranged in a 10 x 10 pattern, 10 to a separators. plug and disc assemblies cell, using interlocking 5.2 Data Cards.- Data card information shall MIL-STD-1168. be as specified
45、in 6. NOTES 6.1 Band Seating.-The operating procedures for use of the Detroit testing machine, as prepared by the Inspection Engineering Office, Frankford Arsenal, SMUFA- nose immersed in water to bourrelet. Base draw 1250 degrees F, 9 minutes Custodian Am-MU Preparing Activity Amy - MU Project No.
46、1315-6ll 16 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- 6q.5 52.5 69 60.5 6.3- 60 59.5 52.5 6n 60.5 58. 505 58, 58&5 58.5 5: 59,5 56.5 56.5 56 56 56 56.5 56.5 55 54.5 55 56 55.5 55 55 53 53.5 53.5 53 53 53.5 53 52 51.5 51.5 53 .52 52 51.5 6 *a4
47、. o .o. e*. o. 4 o. O. oeee*ra 49 49 49.5 50 49.5 50 * 48.5 *.*.4 46.5 47 47.5 48 47.5 47 46.5 46 49.5 45.5 46 45 45 45 44 44.5 44.5 45 45 44.5 44.5 44 44 45 43.5 45 41 44 e-* a e o eo* eo, a. +4.*.*4 43 43 43 43 43 42.5 O e-). O MIL-P-60814 ( MU) Figure 1: Advisory Heat Treatment Pattern for goMM, M318A1 AP-T Shot - _= . * u- s- GOVERNMENT PRINTING OFFICE-1967: 303-2212465 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
