1、PERFORMANCEFILLER,INCH POUNDMIL-PRF-50449C (AR)17 Setemb r 1997SUPERSEDINMIL-F-50449B (AR)06 JULY 1988SPECIFICATIONSHEET FORM(LAMINATEDPAPER, FOR USE IN AMMUNITION CONTAINERS)This specification is approved for use by the U.S. Army ArmamentResearch, Development and EngineeringCenter, Department of th
2、eArmy, and is available for use by all Departments and Agencies ofthe Department of Defense.1. SCOPE1.1 scoQe. This specificationcovers solid, waterresistant sheet material for use as a filler or as a cushioningpad inside containers of ammunitionduring transportation andstorage.2. APPLICABLE DOCUMEN
3、TS2.1 General. The documents listed in this section areneeded to meet the requirementsspecified in sections 3 and 4 ofthis specification. This section does not include documents inother sections of this specificationor recommended foradditional informationor as examples. While every effort hasbeen m
4、ade to ensure the completenessof this list, document usersare cautioned that they must meet all requirements documentscited in sections 3 and 4 of this specification,whether or notthey are listed.Beneficial conments (recommendations,additions, deletions) andany pertinent data which may be of use in
5、improving thisdocument, should be addressed to: Commander, U.S. Army TACOM-ARDEC, ATTN: AMSTA-AR-EDE-S,PicatinnyArsenal, NJ 07806-5000by using the StandardizationDocument Improvement Proposal(DD Form 1426) appearing at the end of this document or byAMSC N/A FSC 8135 IO A. Approved for public release
6、;distribution is unlimited.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-50449C (AR)2.2 Non-Government publications. The following document(s)form a part of this document to the extent specified herein.Unless otherwise specified, the issues
7、 of the documents which areDoD adopted are those listed in the issue of the DODISS cited inthe solicitation. Unless otherwise specified, the issues ofdocuments not listed in the DODISS are the issues of thedocuments cited in the solicitation (see 6.2)AMERICAN SOCIETY FOR TESTING AND MATERIALSASTM D
8、685 - Standard Practice for Conditioning paperand Paper Products for Testing(Applicationfor copies should be addressed to the AmericanSociety for Testing and Materials, 100 Bar Harbor Drive, WestConshohocken, PA 19420-2959).2.3 Order of Precedence. In the event of a conflictbetween the text of this
9、document and the references citedherein, the text of this document takes precedence. Nothing inthis document, however, supersedesapplicable laws andregulations unless a specific exemptionhas been obtained. (Seecontract provisions for additionalprecedence criteria).3. REQUIREMENTS3.1 First article Wh
10、en specified in the contract orpurchase order (See 6.2, a sample shall be subjected to firstarticle inspection in accordancewith the technical provisionsherein (See 4.3).3.2 General reauirement.3.2.1 Interface reauirements.3.2.1.1 Materials. Coated paper products or any othermaterial shall be used p
11、rovided all requirements specified hereinare met.a. The material shall produce a smooth and even sheetmeeting dimensional requirementsof this specification orpurchase order. (see 6.2)b. The material selected is certified as being chemicallyneutral, non-reactive, non-static,non-hazardous, and not abl
12、e togenerate any hazardous products when in use. (see 6.2)Certification is not required for paper products.The material is non-metallic (exceptfor any metal foilsused ; paper laminationwhich are acceptable).d. The material shall be of a clean and uniform appearanceand shall not be contaminatedwith f
13、oreignmaterials such asgrease, dirt, or oil.2Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-50449C (AR)3.2.1.2 Phvsical characteristicq The finished sheet shallhave a thickness of .062 inch with a t;lerance of +.010 inch and-0.008 inch. Unle
14、ss otherwise specified in the contract ororder, finished sheets shall be furnished in sheets that are 40inches by 48 inches with a toleranceof plus or minus 1/8 inches.Finished sheets shall be sound and free of metal inclusions andodors not normally associatedwith the chemical composition ofthe fini
15、shed material.3.2.2 vironmenta 1 Requirements.3.2.2.1 Water absortion. The finished sheet shall have amaximum water absorption of 15 percent by weight and shall showno delamination after being submergedunder water for a minimumof 48 hours.3.2.2.2 $tabilitv The finished sheet shall notdelaminate, bec
16、ome tacky; ooze, blister, or show any evidence ofoff-gassing after being subjected to a temperature of 160degrees F for 24 hours minimum.3.2.2.3 Becvcled, recovered, or environmentallv Dreferablematerials. Recycled, recovered,or environmentallypreferablematerials should be used to the maximum extent
17、 possible providedthat the material meets or exceeds the operational andmaintenance requirements,and promotes economically advantageouslife cycle costs.3.2.3 ODeratinu Reauirements.3.2.3.1 Coloq. The finishedsheet shall be of a dark non-reflective coloration, Black, gray, brown, or dark green areacc
18、eptable. The material may also be of natural kraft papercoloration.3.2.3.2 Fractur. The finished sheet shall be capable ofbending in both directions without cracking or delamination.3.2.3.3 tif-. The finished sheet shall not exceed thepermissible drape of 40 degrees.4. VERIFICATION4.1 General rovisi
19、ons. The inspections (examinations andtests) herein shall be performed to determine whether or not theitem conforms to section 3 of this specification. This elementof inspection shall encompassall visual examinations anddimensional measurements. Noncompliancewith any specifiedrequirements or presenc
20、e of one or more defects preventing orlessening maximum efficiency shall constitute cause forrejection.3Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-50449C (AR)TABLE I. Requirement/verificationmatrixCLASSFAOFVERIFICATIONN/A-NOTAVAILABLE A=
21、DESIGNVEIUFICATION1- ANALYSIS B = FIRST ARTICLE2- DEMONSTRATION c = CONFORMANCE”3 -EXAMINATION4-m5TSIKIX3N 3 VERIFICATIONMETHOD VERIHCAIIONCUSS SECITON4REQUIREMENT WA 1 2 3 4 A B c VEIUFICATlON3,2.1.1 x 4.4.2.13.2.1.2 x x x 4.4.2.13.2.2.1 x x 4.5.13.2.2,2 x x 4.5.23.2.2.3 x3.2.3.1 x x x 4,4.2.13.2.3
22、.2 x x 4.5.33.2.3.3 x x 4.5.4biI4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- . .,MIL-PRF-50449C (AR)4.2 Classification of insections. The inspectionrequirements specified herein are classified as follows:a. First article inspection (see4.3)b. Co
23、nformance inspection (see4.4),4.2.1 InSDeCtiOn conditionq. Unless otherwise specified,all inspections shall be performed in accordance with the testconditions specified herein.4.3 First article insectinn.4.3.1 Submission. The contractor shall submit a firstarticle sample as designated by the Contrac
24、ting Officer forevaluation in accordance with provisions of 4.3.2. The firstarticle samples shall consist of ten (10)sample sheetssufficient in size to perform the specified examinations andtests in the contract or purchase order (see 6.2).4.3.2 Inspections to be Derforme. As determined by theGovern
25、ment, the first article assemblies,components and testspecimens may be subjected to any or all of the examinations andtests specified in this specification. Unless otherwisespecified, all the inspectionsin 4.4.2.1 shall be performed.4.3.3 Reiection. If any test specimen fails to comply withany of th
26、e applicable requirements,the first article sampleshall be rejected. The Government reserves the right toterminate inspection upon any failure of a test specimen tocomply with any of the requirements.4.4 Conformance insDection.4.4.1 InsDection lot formatioq. The term “inspection lot”is defined as a
27、homogeneous collectionof units of product (i.e.40 inch by 48 inch sheets) from which a representative sample isdrawn or which is inspected 100 percent to determine conformancewith applicable requirements. Units of product selected forinspection shall represent only the inspection lot from whichthey
28、are drawn and shall not be construed to represent any prioror subsequent quantities presented for inspection. Homogeneityshall be considered to exist provided the inspection lot has beenproduced by one manufacturer, in one unchanged process, using thesame materials and methods, in accordancewith the
29、 samespecification revisions. All material submitted for inspectionin accordance with this specificationshall comply with thehomogeneity criteria specifiedherein, regardless of the type ofinspection procedure which is being applied to determineconformance with requirements.5Provided by IHSNot for Re
30、saleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-50449C (AR)4.4.2 Examinations and tests.a. Classification of characteristicS. Conformanceexaminations and tests are specified in the followingClassification of Characteristicsparagraphs. The contractorsquality program o
31、r detailed inspectionsystem shall provideassurance of compliance of all characteristicswith theapplicable specification requirementsutilizing as a minimum theconformance criteria specified. When cited herein, attributessampling inspection shall be conducted in accordance with TABLE Ibelow, using the
32、 inspection levels stated in the classificationof characteristicsparagraphs.For the classificationof characteristics,the followingdefinitions apply:Critical - A critical defect is a defect that judgment andexperience indicate would result in hazardous or unsafeconditions for individualsusing, mainta
33、ining, or depending uponthe product, or a defect that judgment and experience indicate islikely to prevent performance of the tactical function of a majorend item such as a tank, land vehicle, missile, aircraft,artillery, or other major weapon system.Major - A major defect is a defect that is likely
34、 to result infailure, or to reduce materially the usability of the unit ofproductfor its intended purpose.Minor - A minor defect is a defect that is not likely to reducematerially the usability of the unit of product for its intendedpurpose, or is a departure from established standards havinglittle
35、or no bearing on the effectiveuse or operation of theproduct.TABLE I.Lot Size (No.of2 to 5051 to 150151 to 12001201 to 1000010001 to 500000500001 and overIf sample size exceedsinspection. Accept oninspection levels.ATT RIBUTES SAMPLE INSPECTIO.Sheets) InSDection Level=I II5 313 520 832 1350 1350 13l
36、ot size, perform one hundred percentzero and reject on one or more for all6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TI-I I-lIIUuF HHHHHHt+ kitid I.o. I-lf-irldl+dd ?+4 6h2!. ,.titimI*I -d o IulQLll IW2HJJI!zProvided by IHSNot for ResaleNo repr
37、oduction or networking permitted without license from IHS-,-,-MIL-PRF-50449C (AR)b. Altemat ive conformsnce Drovisionq. Unless otherwisespecified herein or provided for in the contract, alternativeconformance procedures, methods or equipment, such as statisticalprocess control, tool control,variable
38、s sampling or other typesof sampling plans, etc., may be used by the contractor when theyprovide, as a minimum, the level of quality assurance required bythe provisions herein. Prior to applying such alternativeprocedures, methods or equipment,the contractor shall describethem in a written proposal
39、submitted to the Government forevaluation (see 6.5). When required, the contractor shalldemonstrate that the effectivenessof each proposed alternativeis equal to or better than the specified conformance provision(s)herein. In case of dispute as to whether the contractorsproposed alternative(s)provid
40、es equivalent assurance, theprovisions of this specificationshall apply. All approvedalternative provisions shall be specificallyincorporated in tothe contractrs quality program orapplicable.4.4.3 Testinq.inspection system, as4.4.3.1 Senditioninq. Unless otherwise specified, allspecimens shall be br
41、ought to equilibrium in a circulationatmosphere maintained at a relativehumidity and a temperaturespecified in ASTM D685.4.5 Methods of Inspection. (see 6.3)4.5.1 Water abso Dtion. Thoroughly condition (see 4.4.3.1)specimens measuring 6 inches by 12 inches (min.)and then weighthem. Immediately there
42、after immerse the specimens in clear tapwater (ph 6.5 to 7.5) at room temperaturefor 48 hours minimum.Surface dry the specimens and reweigh them. Compute the moisturegain as a percentage of pre-immersionweight.4.5.2 Stabilitv. Thoroughly condition (see 4.4.3.1)specimens measuring 6 inches by 10 inch
43、es min. and place in anoven (without ingress or egress of air) at 160 plus or minus twodegrees Fahrenheit and at a relativehumidity of 10 percentmaximum, for a period of 24 hours minimum. Remove the specimenfrom the oven and allow to stand for one hour at a temperature of70 plus or minus five degree
44、s Fahrenheit and a relative humidityof 50 plus or minus two percent. Examine for visible evidence ofdelamination, oozing, blistering, tacky surface, or any evidenceof outgassing.4.5.3 . Prepare ten specimens (five cut in themachined direction and five cut in the cross-machined direction)for this tes
45、t. Condition the finished sheet to a minimumtemperature of minus 20 degrees Fahrenheit for a period of 24hours minimum. Upon completionof conditioning, the boardspecimens, measuring 4 inches by 12 inches, shall be bent arounda mandrel 180 degrees with a radius equal to 96 times thethickness of the s
46、pecimen. Failure of one or more specimens to8Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-50449C (AR)meet the applicable requirementsshall be cause for the lot to berejected.4.5.4 StiffnesS. Prepareand thoroughly condition (see4.4.3.1) tes
47、t specimensmeasuring 6 inches minimum by 18 inchesminimum. Immediately upon removal from the conditioning chamber,position the test specimens on a table allowing 12 inches of thesmaller width to extend off of the table. Apply a load,sufficient in weight to prevent movement of the specimen, to thebas
48、e of the extended position (seeFigure 1). Measurethe angle of drape at both ends of the extended portion usingstandard measuring equipment. The lot will be consideredrejected if either of the two sides of the specimen (drapedportion) exceeds the specified requirements.4.5.5 2nsDection eauiDment. The
49、 inspection equipmentrequired to perform the inspectionsspecified herein isidentified in the InspectionMethod Referencea column of theClassification of Characteristicslistings starting with 4.4.2.1.Contractor inspection equipmentdesigns shall be submitted forGovernment approval as specified in the contract. Designs whichprovide variable measurements instead of attributes data arepreferred in or
