1、MIL-C-4 80 6 1 ( r.Iu 1 5 February 1373 r, MILITARY SPECIFICATIOII CELLULOSE NITRATE, PLASTIC SHEETS 1.1 This specification covers cellulose nitrate 1:2 plastic sheets for propellant increment containers. of the following type: Classification.-The plastic sheets shall be Type I - with urea Type II -
2、 with ethyl centralite 2. APPLICABLE DQCUMENTS 2.1 The following documents of the issue in effect on date of invitation for bids, or request for proposal, form a part of this specification to the extent specified herein. SPECIFICATIOWS I4ILITARY rn-i-244 - Nitrocellulose MIL-E-255 - Ethyl Centralite
3、 (Carbamite) NIL-U-10866- UREA, Technical STAiJDARDS FIILITARY !4IL-STD-105 - Sampling Proceures and Fables for MIL-STD-i29 - Marking for Shipment and Storage MIL-STD- - Propellants, Solid: Sampling, HIL-sT-I. - Lot ;Jurnbering of Anmunition MIL-ST3-1235 - Single and Multilevel Continuous -P Inspect
4、ion by Attributes 5 1.4IL-STD-lOg - Quality Assurance Terms and Definitions Examination and Testing Smpling Procedures and Tables for for Inspection by Attributes. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-48061 (MU) (Copies of specificat
5、.ions, standards, drawings, and publications required by suppliers 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 forms a part of this specification to the ex
6、tent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids shall apply. CODE OF FEDERAL mGULATIONS Title 49 - Transportation., Parts O - i90 (The Interstate Commerce Commission Regulations are now a part of the Code of Federal Regulations, available from th
7、e Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402. Orders for the above publications should cite, “49 CFR 0-190 (latest revsions)“, UNIFORM FREIGHT CLASSIFICATION HULES (Application for copies should be addressed to the Uniform Classification Committee, 202 Union
8、 Station, 516 West Jackson Boulevard, Chicago, Illinois 60606). NATIONAL bIOTOR FREIGHT CLASSIFICATION RULES (Application for copies should be addressed to the National Classification Board, 1616 P. Street, N. W, Washington, D.C., 20036). ADIERICAlJ SOCIETY FOR TESTING AND MATERIALS (ASTM) STANDARDS
9、 D638 - Tensile Properties of Plastics Di8980 Sampling of Plastics (Application for copies should be addressed to the American Society for Testing and Materials, i916 Race Street, Philadelphia, Pennsylvania 19103). (T6t5hnica;I society and tchncal assocZakion specifications and standards are general
10、ly available for reference from libraries. They are also distributed amon: technical groups and using Federal Agencies). 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-LIObL 113 979990b 03115839 h 3.1 First article inspection.-This specifica
11、tion makes provisions Por first article inspection. Requirements for the submission of first article samples by the contractor shall be as specified in the contract. L. 3.2 Material 3.2.1 Composition.-The cellulose-nitrate sheets shall * be a homogeneous mixture of the required ingredients. Ingredie
12、nts used shall conform to the following requirements. Type I composition shall have a nitrogen content of 11.00 2 0.5 percent and meet the requirements of MIL-!J-244. The nitrocellulose used for Type II composition shall be Grade D in accordance with MIL-N-244. 3.2.1.1 Nitrocellulose.-The nitrocellu
13、lose used for 3.2.1.2 Camphor. -The camphor shall be of goo.sc:r, LOC!. .,: e:; . . - - - . .- . . - - . :-: - : 1 :; ;-a 3- (I 2 . . . .?. . .- . - . _- . I _- Ali :s.cti:ei.ii.ls , iricludi,n; pac!c:?,:.,Lni: and pacl:Lng;, shall be obtained from the saine source of supply as will be used in regul
14、ar procluction. Prior to submission, the contractor shall inspect the sample to the degree necessary to assure that it conforms to the requirements of the contract, and submit a record of this inspection with the sample, including statements of findings for materials, processes and tests, A sample c
15、ontaining known defects will not be submitted unless specifically authorized by the contracting officer. A first article sample, or portion thereof, as directed by the contracting officer, shall also be submitted whenever there is a lapse in production for a period of excess of 90 days, 1 or wheneve
16、r a change occurs in manufacturing process, material used, drawing or specification such as to si;nficantly affect product; uniformity, as determined by the Government. shall be subjected by the Government.to any or all of the examinations or tests specified in this specification. - =- 4,2,2 Inspect
17、ions to be performed.-The finished sample 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-48061 (MU) 4.2.3 Rejection,-If the finished sample fails to comply with any of the applicable requirements, the first article sample shall be rejected.
18、the right to terminate its inspection upon failure of any component to comply with any of the stated requirements. The Government reserves 4.3 inspection Provisions 4.3.1 Lot formation.-The term “inspection lot“ as used in this specification is defined as an essentially homogeneous collection of uni
19、ts of product from which a representative sample is drawn and inspected to determine conformance with applicable requirements. only that quantity of units from which the sample was drawn and shall not be construed to represent any prior to subsequent quantities presented for inspection. Homogeneity
20、shall be considered to exist provided the inspection lot has been produced by one manufacturer, in one unchange process, in accordance with the same specification and same specification revision and complies with the provisions for submission of product as specified in MIL-STD-105. Changes to the pr
21、ocess or specification, not affecting safety, performance, interchangeability, or storage, as determined by the Government, shall not be deemed to alter the homogeneity of an inspection lot. All material submitted for inspection in accordance with this specification shall comply with the homogeneity
22、 criteria specified herein regardless of the type of sampling procedure which is being applied to determine conformance with requirements. The criteria and procedures for the assignment of lot numbers shall be in accordance The sample selected shall represent With MIL-STD-1168. 4.3.2 Inspection proc
23、edure 4.3.2.1 Examination.-Sampling plans and procedures for the following classification of defects shall be in accordance with MIL-STD-105. Contractors sampling plans, if used, shall be approved by the Government and shall provide as a minimum, the protection afforded the Government by the samplin
24、g plans in MIL-STD-105. Continuous sampling plans in accordance with MIL-STD-1235 may be used if approved by the proguring activity. Also, at the option of the procuring activity, AQLc an sampling plans may be applied to the individual characteristics listed, using an AQL of 0.40 percent for each Na
25、jor defect and an AQL of 0.65 percent for each minor defect. c b Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Cat egorie s De fec t s Method of Code No. Inspect ion (see 6.5) Critical: None defined. Ma j or : AQL 1. O percent efect 101. Dimensions
26、 incorrect . Gage O1001 102. Warpage Visual 01002 103. Cracks.l.Visual 01003 Minor : AQL 2 . 5 percent defect 201. Scratches,.*.Visual 01004 202. ColorVisual 01005 4.4 Tests 4.4.1 Tensile strength and elongation - Code No. 02001.- The tensile strength and elongation test shall be in accordance with
27、ASTM D638. Sampling for the test shall be conducted in accordance with ASTM Di898, Method C. shall be performed at 134.5“C in accordance with Method 404,l of Standard MIL-STD-286. in the composition shall be weighed an check weighed to conform with the requirements of 3.5. 4.4.2 Stability - Code No.
28、 03001.-The stability test 5 4.4.3 Composition-Code No. 04001.-Each ingredient used 5. PREPARATION FOR DELIVERY 5.1 Packaging Level C.-Quantities of plastic sheets as specified (see 6.2) shall be packed to assure adequate protection against deterioration and damage from the supplier to the first rec
29、eiving activity for immediate use, in 5.1, shall be packed in uniform quantities in accordance with Department of Transportation (DOT) regulations, Uniform Freight Classification Rules idationa1 Motor Freight Classification Rules, or other carrier rules as may be applicable to the mode Qf transporat
30、ion. 5.2 Packing, Level C.-Plastic sheets packaged as specified 5.3 Marking,-Unit and shipping containers shall be marked in accordance with MIL-STII-129 and DOI regulations. Shipping containers shall bear the DOT yellow “Flammable Solid“ Pyroxylin Plastic labels 6, IIOTES 7 Provided by IHSNot for R
31、esaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-qObL 13 W 7797706 0335844 T W MIL-(2-48061 (MU) 6.1 Intendz use.-lhe plastic covered by this specification is intended for use in increment containers for propellant for the Gorw and 81r.IrI Nortar. the following: 6.2 Or
32、dering data.-Procurernent documents should specify a. the title, number and date of this specification. b. Color when required (see 3.3) C. The dimensions of the plastic required should be d. Quantities of plastic per unit package required (see 5.1) e. Provisions for submission of first article samp
33、les. specified in the contract. (see 3.4) 6.3 Warning.-The material covered by this specification is extremely flammable. Suitable precautions should be taken in machining specimens and in storage to reduce hazards involved. Because of the deteriorating. effects of aging and of old embrittled materi
34、als in manufacture and to provide adequate product protection during shipment; and storage. 6.4 Significant places.-For the purpose of determining conformance with this specification, an observed or calculated value should be rounded off “to the nearest unit“ in the last right-hand place of figures
35、used in expressing the limiting value, in accordance with the rounding-off method of the Re commende ci Prac t i ces for De si gnat inp; S igni f i cant Place s in Specifie Limiting Values (ASTM E23) 6.5 Inspection code numbers.-The five digit code numbers assigned to the inspections herein are to facilitate future data collection and analysis by the Government. Custodian : Army-MU Project; Number: 1376-AO10 R * U. S. GOVERNMENT PRINTING OFFICE 1973 -714-544/4835 Preparing Activity: Army-MU Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
