1、MIL-I-22076B 5 August 1963 SUPERSEDING MIL-I-Z2076A(SHIPS) 28 March 1961 MILITARY SPECIFICATION INSULATION TUBING, ELECTRICAL, NONRIGID, VINYL, VERY LOW TEMPERATURE GRADE This specification has been approved by the Department of Defense and is man- datory for use by the Departments of the Army, the
2、Navy, and the Air Force. 1. SCOPE 1.1 This specification covers a very low temperature grade of nonrigid tubing of polyvinyl chloride or polyvinyl chloride-acetate for use as electrical insulation. 2. APPLICABLE DOCUMENTS 2.1 The following documents, of the issue in effect on date of invitation for
3、bids or request for proposal, form a part of the specification to the extent specified herein: SPECIFICATIONS FEDERAL VV-1-530 - Insulating Oil, Electrical (for Transformers, Switches, and Circuit Breakers), MILITARY MIL-S-3136 - Standard Test Fluids; Hydrocarbon. STANDARDS MILITARY MIL-STD-105 - Sa
4、mpling Procedures and Tables for Inspection by Attributes. (Copies of specifications, 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 pub
5、lications.- The following documents form a part of this specification to the extent specified herein. Unless otherwise specified, the issue in effect on date of invitation for bids or request for proposal shall apply. AMERICAN SOCIETY FOR TESTING AND MATERIALS trical Insulating Materials. . D150 - M
6、ethods of Test for A-C Capacitance, Dielectric Constant, and Loss Characteristics of Elec- D746 - Method of Test for Brittleness Temperature of Plastics and Elastomers by Impact. D876 - Methods of Testing Nonrigid Polyvinyl Tubing. (Application for copies should be addressed to the American Society
7、for Testing and Materials, 1916 Race Street, Philadelphia 3, Pa.) OFFICIAL CLASSIFICATION COMMITTEE Uniform Freight Classification Rules. (Application for copies should be addressed to the Official Classification Committee, 1 Park Avenue at 33rd Street, New York 16, N. Y.) Licensed by Information Ha
8、ndling ServicesProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-22076B (Technical society and technical association specifications and standards are generally available for ref- erence from libraries. They are also distributed among technical gr
9、oups and using Federal agencies,) 3, REQUIREMENTS 3.1 Qualification.“ Electrical insulation tubing furnished under this specification shall be a product which has been tested and has passed the qualification tests specified herein, and has been listed on or approved for listing on the applicable qua
10、lified products list. 3.2 Material.- The tubing shall be of polyvinyl chloride or polyvinyl chloride-acetate composition prop- erly formulated with plasticizers, pigment, stabilizers, or other ingredients necessary to conform to this specification. 3.2.1 Changes in material.- If the manufacturer des
11、ires to change his process or the composition of his material, after qualification approval has been granted (see 6.3), he shall submit to the qualifying agency (Bureau of Ships) a statement to that effect, describing the proposed change, together with evidence to sub- stantiate his claim that such
12、change is suitable. Similar notification and substantiating evidence shall be sub- mitted at any later time if a change again becomes necessary or desirable. At the discretion of the qualifying agency, test specimens may be required to prove the suitability of the proposed changes, 3.2.3 Surface def
13、ects.- Materials shall be free from blisters, bubbles, wrinkles, and cracks, and shall be reasonably free from other small defects such as scratches and dents, 3.2.4 Colors.- Unless otherwise specified, materials shall be furnished clear transparent (uncolored), Available colors considered standard
14、are black, white, yellow, green, blue, and red (see 6.2). 3.3 Quantitative requirements (property values).- When specimens are subjected to the tests specified in table I, the values obtained from any set of specimens for any specific property after any one conditioning procedure specified in the ta
15、ble shall be averaged, and this average value shall be not less than the minimum nor more than the maximum value (as applicable) specified in table I. Table I - Quantitative requirements (property values). 2 Property to be tested strengtd Dielectric strengthu Dissipation factor at 1 kilocycle Dielec
16、tric constant at 1 kilocycle Test reference 4.7.2 4.7.3 4.7.3 Conditioning procedure C-96/23/0 C-96/23/96 C-96/23/0 C-96/23/96 C-96/23/0 C-96/23/96 Unit of value Percent of dry value obtained on test (min.) Maximum Maximum Nominal dimensions Inches wall thickness 0.016 .O20 .O25 .O30 ,040 ,050 .O60
17、I All thick- ness “ “ Value required 650 550 480 430 350 300 280 ?O 0.14 b.16 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Table I - Quantitative requirements (property values) (Contd). Property to be tested Test reference Conditioning procedure U
18、nit of value Value required Nominal dimensions Inches wall thickness 109 Dt-24/23 Volume resistivity 4.7.4 Ohm-centimeters (min.) Tensile strength 4.7.5 C-96/23/50 P.s.i. (min.) 1800 Elongation 250 450 C-96/23/50 C-96/23/50 Percent (min.) Percent (max.) Degrees centi- grade (min.) Softening temperat
19、ure (penetration) 4.7.6 C-96/23/50 80 Lengthwise shrinkage 4.7.7 E-2/100 Percent (max,) 10 4.7.12 “AS received“ -55 Degrees centi- grade (ma.) Maximum change in de- grees centi- grade from value obtained on test of “as received“ samples Cold brittle- ness Cold Brittle- ness (aged samples) 4.7.12 E-4
20、00/100 15 l/For thickness not shown, the dielectric strength shall be that given for the nearest thickness shown, 3.4 Dimensions and tolerances. - 3.4.1 Lengths,- Unless otherwise specified in the contract or order, tubing shall be furnished on reels in lengths specified in table II (see 6.2). Tubin
21、g furnished on reels shall be wound on the reels in such a man- ner that the tubing will not be flattened or kinked to an extent that printing of circuit identification machine, if desired, cannot be accomplished. Minimum lengths specified shall not be exceeded by more than 10 percent, Table II - Tu
22、bing Iengths. Nomina1 inside diameter Minimum length Inch Feet 1,000 500 200 100 0.034 - 0.059 .O66 - .166 ,186 - .330 .360 and over 3.4.2 Inside diameters and wall thicknesses.- Unless otherwise specified in the contract or order, tubing shall be furnished in the standard inside diameters and wall
23、thicknesses shown in table III, as specified (see 6.2). -8 r- “_ F? -, 1 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. MIL-I-22076B Table III - Inside diameters and wall thicknesses of tubing AWG sizes. AWG size number 24 22 20 19 18 17 16 15 1
24、4 13 12 11 10 9 8 7 6 5 4 3 2 1 O 5/16 inch 3/8 inch 7/16 inch 1/2 inch 5/8 inch 3/4 inch 7/8 inch 1 inch 1-1/4 inches 1-1/2 inches 1-3/4 inches 2 inches T Inside diameter (inches) Nominal 0.022 .O27 ,034 ,038 ,042 ,047 ,053 .O59 ,066 ,076 ,085 ,095 ,106 ,118 .133 ,148 ,166 ,186 ,208 ,234 .263 ,294
25、,330 “- “I“ “- “- “- “_ “- “- _“ “_ -“ -“ Minimum 0.020 ,025 ,032 .O36 .O40 ,045 ,051 .O57 .O64 .O72 ,081 .o91 * 102 ,114 .129 ,144 .162 .182 I 204 ,229 .258 .289 .325 ,313 .375 .438 ,500 ,625 ,750 .875 1 .o00 1.250 1.500 1.750 2.000 Maximum 0.027 ,032 .O 39 ,044 .O49 ,054 .O61 ,067 .O72 ,080 .O89 ,
26、101 ,112 ,124 ,141 .158 ,178 .198 ,224 ,249 ,278 .311 .347 ,334 ,399 .462 .524 .655 -786 ,911 1.036 1.290 1.550 1.812 2.070 T Wall thickness (inches) Minimum 0.010 ,010 .O13 .O13 .O13 .O13 .O13 ,013 .O13 .O13 .O13 .O13 .O13 .O17 ,017 .O17 ,017 .O17 .O17 .O17 .O17 .O17 .O17 ,022 .o22 .o22 .O22 ,025 ,
27、030 .O30 .O30 ,035 ,039 ,047 ,050 Maximum 0.014 ,014 ,019 ,019 ,019 ,019 .o19 ,019 .o19 .o19 .o19 ,019 ,019 .O23 .O23 .O23 .O23 .O23 .O23 .O23 ,023 .O23 .O23 .O28 .O28 .O28 .O28 .O35 ,040 ,040 .O40 .O45 ,051 .O63 .O70 Nominal 0.012 ,012 .016 .016 .016 .016 ,016 .016 ,016 ,016 ,016 ,016 ,016 ,020 ,02
28、0 ,020 ,020 ,020 ,020 .020 ,020 ,020 ,020 ,025 ,025 .025 .025 ,030 .035 ,035 .035 ,040 ,045 ,055 ,060 3.5 Qualitative requirements.- 3.5.1 Oil resistance - flexibility.- At the completion of the test specified in 4.7.8, oil shall not have penetrated the tubing, and the tubing shall not have develope
29、d cracks or increased in dimensions at any point by more than 10 percent. 3.5.2 Flame resistance.- The average duration of burning shall not exceed 15 seconds, and the paper indicator shall show no evidence of being affected when tested as specified in 4.7.9. 3.5.3 Corrosive effect.- Copper shall no
30、t be corroded or otherwise adversely affected by contact with the material. The resistance of the copper wire shall not increase by more than 2 percent (see 4.7.10). 3.5.4 Fungus resistance.- The material shall be tested for fungus resistance as specified in 4.7.11. The material shall not support fu
31、ngus growth and shall be fungus-resistant. The material shall be considered fungus-resistant if at least two of three specimens are rated O to 1. 3.6 Chemical analysis.- The composition of material is determined by chemical analysis on material offered un order shall not differ significantly from th
32、e composition of the samples submitted for qualification approval (see 4.7.13). “-l_l 4 I- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-22076B 3.7 Storage stability.- At the end of 12 months storage specified in 4.7.14 there shall be no evid
33、ence of spewing (oily or sticky exudation) on the inner and outer surfaces of the tubing. At the end of the 12 months storage the material shall conform to the fungus resistance requirements of 3.5.4. 3.8 Workmanship.- The material shall be manufactured and processed in a careful and workmanlike man
34、ner, in accordance with good practice. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection.- Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified,
35、the supplier may utilize his own facilities or any commercial laboratory acceptable to the Government. The Government reserves the right to perform any of the inspections set forth in the speci- fication; where such inspections are deemed necessary to assure supplies and services conform to prescrib
36、ed requirements. 4.2 Classification of inspection.- The inspection of tubing shall be classified as follows: (a) Qualification tests. (b) Quality conformance inspection. 4.3 Qualification tests.- Qualification tests shall be conducted at a laboratory satisfactory to the Bureau of Ships. Qualificatio
37、n tests shall consist of the tests specified in table IV. Application for Qualification tests shall be made in accordance with “Provisions Governing Qualification“ (see 6.3 and 6.4). Table IV - Qualification tests. Test Visual and dimensional examination Electrical properties: Dielectric strength Di
38、ssipation factor Dielectric constant Volume resistivity Mechanical properties: Tensile strength Elongation Thermal properties: Softening temperature (penetration) Lengthwise shrinkage Cold brittleness Cold brittleness (aged samples) Flame resistance Oil resistance- Corrosive effect Fungus resistance
39、 Chemical analysis Storage stability Miscellaneous: flexibility Requirement reference 3.2, 3.4, and 3.8 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.5.2 3.5.1 3.5.3 3.5.4 3.6 3.7 Test reference 4.5.1 and 4.7.1 4.7.2 4.7.3 4.7.3 4.7.4 4.7.5 4.7.5 4.7.6 4.7.7 4.7.12 4.7.12 4.7.9 4.7.8 4.7.10 4.7.11 4.7.1
40、3 4.7.14 Minimum number of tests for each condition (see 4.6) Number 18 AWG 10 10 “ “ 3 5 5 5 3 in 4.7.12.3.1 As specified As specified in 4.7.12.3.1 5 1 3 1 3 “ Number 12 AWG 10 10 “ “ 3 5 5 5 3 in 4.7.12.3.1 As specified As specified in 4.7.12.3.1 5 1 “ “ 1 “ Number 6 AWG 10 10 3 3 3 5 5 5 3 in 4.
41、7.12.3.1 As specified As specified in 4.7.12.3.1 5 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-22076B 4.3.1 Samples for qualification tests.- The sizes and quantities of tubing for qualification inspection shall be as shown in table V. Ta
42、ble V - Sizes and quantities of tubing for qualification tests. AWG size number Inside diameter Nominal Minimum Maximum thickness wall Amount Inch Inch Inch Feet 18 0.040 0.049 0.016 200 12 ,081 ,091 .O16 200 6 ,162 ,178 ,020 200 4.4 Sampling for quality conformance inspection.- 4.4.1 Lot.- For purp
43、ose Of sampling, a lot shall consist of all tubing of the same size (see table III) pro- duced under essentially the same conditions and offered for delivery at the same time. The lot size shall be the number of units of product, 4,4.1.1 Unit of product.- The unit of product shall be taken as 100 fe
44、et of tubing. 4.4.2 Samples of tubing shall be selected from each lot in accordance with MIL-STD-105. The acceptable quality level (AQL) shall be 2.5 percent defective major and 4 percent defective minor for examination spe- cified in 4.5.1. 4.4,3 Sampling for quality conformance tests.- Sampling fo
45、r quality conformance tests from each lot shall be in accordance with 4.5.2, 4.5 Quality conformance inspection.- 4.5.1 Examination.- Each sample selected in accordance with 4.4.2 shall be visually and dimensionally examined to verify conformance with the requirements in 3.2, 3.4, and 3.8. Any reel
46、having one or more de- fects shall not be offered for delivery, If the number of defective samples exceeds the acceptance number for the appropriate sampling plan of MIL-STD-105 at AQL 2.5 percent major and 4 percent minor, this shall be cause for rejection of the lot represented by the samples. 4.5
47、,2 Quality conformance tests.- Quality conformance tests shall consist of those specified in table VI (samples for group 1 tests- be selected from each lot in accordance with the .table for small sam- plinginspectionof MIL-STD-105. The AQL shall be 6.5 percent defective, level 7 normal and tightened
48、 and level 5 for reduced, using procedure R-1. Two samples shall be selected from each 500 units or fraction thereof and shall be subjected to the group 2 test. Failure of a sample for any group 2 test shall result in rejection of the lot, 4.6 Conditioning,- The tubing shall be conditioned before be
49、ing tested as specified in table I. 4,6,1 Equipmen5- Conditioning chambers and baths shall be such as to maintain the specified tempera- ture plus or minus 2 C. and the specified relative humidity plus or minus 2 percent. 4,6,2 Designation.- Conditioning procedures shall be designated as follows: (a) A capital letter indicating the general condition of the specimen; that is, humidity, immersion, (b) A number indicating in hours the duration of the conditioning, (c)
