1、- MIL-C-70740 81 9799906 0486600 3 Benencial ooalmcnts (-tioas, additions, deletions) and any pertioent data which may be of 1L9c in improving this doaunent huid be adresui to: Canmaiidcr, U.S. Army ARDE, AT“: SMCAR-RAGS, PicatiMy Arsenal, New Jersey 07806.HKK) by Unng tbe dt-addnssed SLaOdardua tim
2、 Documait Impmv-t nopasai (DD Fm 1426) MIL-C-70740 (AR) 15 July 1991 MILITARY SPECIFICATION CONTAINER, AMMUNITION, LIGHTWEIGHT METAL FOR 155MM PROPELLING CHARGE This specification is approved for use by the U.S. Army Armament, Munitions and Chemical Command, and is available for use by all Departmen
3、ts and Agencies of the Department of Defense. ?a 1. SCOPE *b 1.1 Scope. This specification covers requirements and quality assurance provisions for the manufacture of a family of metal containers used for packing 155MM propelling charges for separate loaded artillery ammunition (see 6.1.) . 2. APPLI
4、CABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications., standards and handbooks. The following specifications, standards and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the
5、Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS FEDERAL TT-C-490 - Cleaning Methods for Ferrous Surfaces and Pretreatments for Organic Coatings MILITARY MIL-W-12332 - Welding Resistance, Spot, Seam and P
6、rojection , for Fabr icating Assembl ies of Low-Carbon Steel MIL-A-48078 - Ammunition, Standard Quality Assurance Provisions, General Specification For Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-707YO 1 m 9999906 0486601 5 = MIL-A-70625 MI
7、L-C-70740 (AR) - Automated Wceptance Inspection Equipment l:r Non-Electronic Components, Design, Testing and Approval of STANDARDS MILITARY MIL-STD-171 - Finishing of Metal and Wood Surfaces MIL-STD-1235 - Cingle and Multilevel Continuous Sampling Procedures and Tables for Inspection by Attributes C
8、onstructional Steel MIL-STD-1261 - Arc Welding Procedures for (Unless otherwise indicated, copies of federal and military specifications, standards and handbooks are available from Standardization Documents Order Desk, Bldg. 4D, 70 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.1.2 Other Government
9、 documents, drawings and publications. The following other Government documents, drawings and publications form a part of this specification to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. DRAWINGS US ARMY ARMAMENT RESEARCH, DEVELOPMENT AND
10、 ENGINEERING CENTER 12910318 - Container, Ammunition, Metal, PA 132 12910319 - Container, Ammunition, Metal, PA 128 12910324 - Container, Ammunition, Metal, PA 131 (Copies of other Government documents, drawings and publications required by contractors in connection with specific acquisition functio
11、ns should be obtained from the contracting activity or as directed by the contracting officer .) 2.2 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DoD adopted are tho
12、se listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). . , 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license
13、 from IHS-,-,- MIL-Cu70740 81 E 99SqqOb 848bb32 7 a MIL-C-70740 (AR) AMERICAN SOCIETY FOR TESTING AND MATERIALS ASTM-D2240 - Rubber Property-Durometer Hardness, Standard Method of Test for (DoD adopted) ASTM-D3951 - Commercial Packaging, Practice for (DoD adopted) ASTM-E8 - Tension Testing of Metall
14、ic Materials, Standard Method of ASTM-E18 - Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials, Test for (Application for copies for ASTM publications should be addressed to r the American Society for Testing and Materials, 1916 Race Street, -r Philadelphia, PA 19103.) L 2.3 O
15、rder of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document shall take precedence. however, shall supersede applicable laws and regulations unless a specific exemption has been obtained. Nothing in this document, 3. REQU
16、IREMENTS 3.1 Materials. Materials and parts shall be in accordance with 3.2 Containers, The containers (container assemblies) shall applicable drawings and specifications. comply with all requirements specified on drawings 12910318, 12910319 or 12910324 as applicable and associated drawings and with
17、 all requirements specified in applicable specifications and standards. MIL-W-12332 or MIL-STD-1261. e 3.3 Weldinq. The welding shall comply with the requirements of 3.3.1 Tensile strenath of body weld. The tensile strength of the longitudinal body weld shall not be less than 65 percent of the tensi
18、le strength of body material. 3.3.2 Tensile strenuth of bodv material. The tensile strength of the body material shall not be less than 50,000 pounds per square inch (psi). 3.4 Painted surface. The painted surfaces of the container shall comply with the requirements of TT-C-490. However, the film th
19、ickness and salt spray requirements of TT-C-490 shall not apply to the interior surfaces, exterior surface welded spots and exterior surface sharp corners of the container. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-78748 81 = 99999Ob 04
20、bb03 9 MIL-C-70740 (AR) 3.5 Cover assemblv. Upon assembly of the cover assembly to the body assembly (body weldment), the cover assembly shall freely engage and rotate within the body assembly. is rotated with the IiYii handle in the open position, the iiii handle shaft ends shall freely engage into
21、 the respective bayonet slots of the rim. When the iiYii handle is rotated toward the closed position, the iiYii handle shall push the spring clip out of the way and snap into place (closed position) and the spring clip shall return to its original position locking the iiYii handle. when the iiYii h
22、andle is returned to the open position, it shall push the spring clip out of the way permitting a 180 degree rotation of the iiYii handle to the open position with the spring clip returning to its normal position. Rotation of the cover assembly will permit disengagement from the body assembly. As th
23、e cover assembly 3.6 Air Dressure test. 3.6.1 Air pressure of ungainted cover assemblv. The unpainted cover assembly assembly shall withstand an internal air pressure of three psi for five (5) seconds minimum under water, without leakage occurring. body assembly shall withstand an internal air press
24、ure of three psi for five (5) seconds minimum under water, without leakage occurring. 3.6.2 Air pressure of unpainted body assemblv. The unpainted 3.7 First article insDection. This specification contains technical provisions for first article inspection. the submission of first article samples by t
25、he contractor shall be Requirements for as specified in the contract. 3.8 Workmanship. 3.8.1 Containers. The containers shall be regular, smooth, and free from wrinkles, pin holes, cracks, rough spots, burrs, sharp edges and any other defect that might affect the serviceability, durability, and safe
26、ty of the container. with applicable drawings and comply with instructions in MIL-STD- 3.8.2 Paint coating. The paint coating shall be in accordance 171. 3.8.3 Parts. All parts shall be free of chips, dirt, grease, rust and foreign material. injurious to any of the parts nor shall any of the parts b
27、e contaminated by the cleaning agents used. The cleaning method used shall not be 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I I b MIL-C-70740 81 = 9999906 0486604 O 2 MIL-C-70740 (AR) 4. QUALITY ASSURANCE PROVISIONS 4.1 ResDonsibilitv for ins
28、pection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitabl
29、e for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in this specification where such inspections are deemed necessary to assure supplies and services conform to pres
30、cribed requirements. requirements of sections 3 and 5. specification shall become a part of the contractors overall inspection system or quality program. requirements in the specification shall not relieve the contractor of the responsibility of assuring that all products or supplies submitted to th
31、e Government for acceptance comply with all requirements of the contract. not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to acceptance of defective material. 4.1.1 Responsibility for comDliance. All items must meet all I The inspec
32、tion set forth in this i The absence of any inspection Sampling in quality conformance does 4.2 Classification of insDections. The following types of inspection shall be conducted on this item: a. First article inspection (see 4.3) b. Quality conformance inspection (see 4,4) 4.3 First article insDec
33、tion. 4.3.1 Submission. The contractor shall submit a first article sample as designated by the Contracting Officer for evaluation in accordance with provisions of 4,3.2. consist of fifteen (15) painted container assemblies, five (5) painted cover assemblies, five (5) unpainted cover assemblies, and
34、 ten (10) each of every subassembly and component (unpainted). specified herein. The first article sample shall 4.3.2 InsDections to be Derformed. See MIL-A-48078 and Table I 4.3.3 Redeckion. See MIL-A-48078. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from
35、 IHS-,-,-MIL-C-70740 81 999990b 0486605 2 - a3 rl(u (uu)b dimm dididi . . bl b 3 rlrl 0 * (vu) (u dim LD didi di rl u) In di O rl cv d+ di rl rl (u di di . 5 a, c, d h a O Q -1 rno -1 .ad%- rn c, u a, ici a, a k O I i 1 1 I I 1 4 I I I l l I l l j 6 Provided by IHSNot for ResaleNo reproduction or ne
36、tworking permitted without license from IHS-,-,-ni c, ni rn c, a kl rn a -ri a d O cum ni ninini nini ni om o moo mo o e. . . 0. OLD O OLDLD OLD O d rl rl rl rl U1 7 u aJ v) 3 aJ c, O E n 2 E c u ZI 3 In Co aJ LL d O h In d v) aJ U a Q a, lY P n n n F m Co 3 3 d P O h In d I- n L r“ o LL o 5- =t Pro
37、vided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70740 81 m 9999906 0486607 b m MIL-C-70740 (AR) 4.4 Quality conformance inspection. 4.4.1 Inspection lot formation. Inspection lots shall comply with the lot formation provisions of MIL-A-48078. In a
38、ddition, inspection lots of containers shall contain mater ia1 from lots with the same interfix number from one manufacturer. 4.4.2 Examinations and tests. a. Classification of characteristics. Quality conformance examinations and tests are specified in the following Classification of Characteristic
39、s paragraphs. The contractors quality program or detailed inspection system shall provide assurance of compliance of all characteristics with the applicable drawing and specification requirements utilizing as a minimum the conformance criteria specified herein. When cited herein, attributes sampling
40、 inspection shall be conducted in accordance with Table II below, using the inspection levels stated in the Classification of Characteristics paragraphs. Table II. Attributes sampling inspection inspect ion Levels Lot Size I II III IV v VI 2 to 8 9 to 15 16 to 25 26 to 50 51 to 90 91 to 150 151 to 2
41、80 281 to 500 501 to 1200 3201 to 10000 10001 to 35000 35001 to 150000 150001 to 500000 500001 to over 1201 t 3200 . * * * * * * * * * 1250 1250 1250 1250 1250 1250 * * * * * 125 125 125 125 125 125 296 296 346 431 * * .* 32 32 32 32 32 74 74 109 124 156 187 a7 * 13 13 13 13 13 30 30 35 43 50 61 74
42、91 102 5 5 5 5 12 12 14 17 20 24 30 36 40 40 40 3 3 3 3 s4 5 6 7 9 10 10 10 10 10 10 Numbers under inspection levels indicate sample size; asterisk indicates one hundred percent inspection. If sample size exceeds lot size, perform one hundred percent inspection. Acceet on zero and reject on one or m
43、ore for all inspection levels. 1 I I l 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70740 (AR) b. Alternative quality conformance provisions. Alternative quality conformance procedures, methods, or equipment, such as statistical process co
44、ntrol, tool control, other types of sampling procedures, etc., may be used by the contractor when they provide, as a minimum, the level of quality assurance required by the provisions specified herein. Prior to applying such alternative procedures, methods, or equipment, the contractor shall describ
45、e them in a written proposal submitted to the Government for evaluation (see 6.5). When required, the contractor shall demonstrate that the effectiveness of each proposed alternative is equal to or better than the specified quality assurance provision(s) herein. In cases of dispute as to equivalent
46、assurance, the provisions of this specification shall apply. All approved alternative provisions shall be specifically incorporated into the contractors quality program or detailed inspection system, as applicable. * whether the contractors proposed alternative(s) provide O . . .I 9 Provided by IHSN
47、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-tn c .?I w a Y* s MIL-C-70740 81 = 9999906 O486609 T a al c .rl 4-1 al a al C O z * m a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-70740 BL 999990b 04bbLO b
48、 h Y % O * l- O I- l u I c t! rl tntntn tn tntn vi ama Q QQ 4 232323 23 2323 3 cocus, a, a, z NNN N (v(v 03 mmm m mm m HHH HHH HHH HH . H HH -. 4 4 rldrl rl rlrl rl III I II I O00 o O0 O 4 a, rl 2 a * aicr k u0 o a, io- rl uh o 04 .G rlQ E a, via, tnc, a, vi LI orl rn arlo Q icr a, a a, z s pi O v1
49、3 vi k O O x u pi d 4 icr a, o a 4 3 w 5 O 5 I+ QI 11 U ai In 3 ai c O != n 2 E t U c 3 n Ln Co ai IL 4 n O h In I+ v) ai U (d Q ai e n ? m Co 3 3 I+ n 7 n O h In I+ E L O LL. o E v, E -=c Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70740 BL 99999Ob 04bbLL a d Id aJa,a,a,a,
