1、Designation: D922 11D922 18Standard Specification forNonrigid Vinyl Chloride Polymer Tubing1This standard is issued under the fixed designation D922; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A numb
2、er in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This specification covers nonrigid tubing of vinyl c
3、hloride polymer or its copolymers with other materials for use inelectrical insulation in three grades, as follows:1.1.1 Grade AGeneral-purpose.1.1.2 Grade BLow-temperature.1.1.3 Grade CHigh-temperature.1.2 This standard and IEC-60684-3-100 to -105 address the same subject matter but differ in techn
4、ical content.1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.4 This standard does not purport to address all of the safety concer
5、ns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.1.5 This international standard was developed in accordance with internationally recogn
6、ized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D876 Test Methods for No
7、nrigid Vinyl Chloride Polymer Tubing Used for Electrical InsulationD1711 Terminology Relating to Electrical InsulationD3636 Practice for Sampling and Judging Quality of Solid Electrical Insulating MaterialsE176 Terminology of Fire Standards2.2 IEC Standards:IEC-60684-3-100 to -105 Flexible insulatin
8、g sleeving, Part 3, Sheets 100 to 105: Extruded PVC sleeving33. Terminology3.1 Definitions:3.1.1 For definitions pertaining to electrical insulation, refer to Terminology D1711.3.1.2 For definitions pertaining to fire standards, refer to Terminology E176.4. Ordering Information4.1 Orders for materia
9、l covered by this specification shall include the following:4.1.1 Grade of tubing,4.1.2 Size and color,4.1.3 Total length in feet or metres,1 This specification is under the jurisdiction of ASTM Committee D09 on Electrical and Electronic Insulating Materials and is the direct responsibility of Subco
10、mmitteeD09.07 on Flexible and Rigid Electrical Insulating Materials.Current edition approved Aug. 1, 2011May 1, 2018. Published August 2011May 2018. Originally approved in 1947. Last previous edition approved in 20062011 asD922 00aD922 11.(2006). DOI: 10.1520/D0922-11.10.1520/D0922-18.2 For referenc
11、edASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from American National Standards Institute (ANSI), 25 W. 43rd S
12、t., 4th Floor, New York, NY 10036.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recom
13、mends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C70
14、0, West Conshohocken, PA 19428-2959. United States14.1.4 Length of cut pieces in inches or centimetres, if any, and4.1.5 Amount of tubing on each spool or in each coil, if not standard packaging with the supplier.5. Color5.1 Clear transparent, black, white, yellow, green, blue, and red shall be cons
15、idered standard colors. Other colors shall beconsidered special. The color desired shall be specified in the purchase order.5.2 Conditioning:5.2.1 Unless otherwise specified, all testing for this standard shall be conducted at 23 6 5C (73 6 9F) and a relative humidityof 50 6 10 % RH. All samples sha
16、ll be preconditioned at 23 6 5C (73 6 9F) and a relative humidity of 50 6 10 % RH for aminimum of 30 minutes prior to test.6. Dimensional Requirements6.1 Inside DiameterThe inside diameter of the tubing shall conform to the requirements prescribed in Table 1 or Table 2.6.2 Wall ThicknessThe wall thi
17、ckness of the tubing shall conform to the requirements prescribed in Table 1 or Table 2.6.3 Commercial LengthsThe tubing shall be supplied in continuous lengths.7. Workmanship, Finish, and Appearance7.1 The surface shall be smooth, free of blisters, cracks, or any other defects that have the potenti
18、al to detrimentally affect itssuitability for the service intended. It shall not be subject to peeling, scaling, or flaking.TABLE 1 Dimensional Tolerances of TubingA,BSpecified SizeInside Diameter, in. Wall Thicknessmax min Wall Thick-ness, in.Tolerances,plus orminus, in.No. 24 0.022 in. 0.027 0.020
19、 0.012 0.002No. 22 0.027 in. 0.032 0.025 0.012 0.002No. 20 0.034 in. 0.039 0.032 0.016 0.003No. 18 0.042 in. 0.049 0.040 0.016 0.003No. 16 0.053 in. 0.061 0.051 0.016 0.003No. 14 0.066 in. 0.074 0.064 0.016 0.003No. 12 0.085 in. 0.091 0.081 0.016 0.003No. 11 0.095 in. 0.101 0.091 0.016 0.003No. 10 0
20、.106 in. 0.112 0.102 0.016 0.003No. 9 0.118 in. 0.124 0.114 0.020 0.003No. 8 0.133 in. 0.141 0.129 0.020 0.003No. 7 0.148 in. 0.158 0.144 0.020 0.003No. 6 0.166 in. 0.178 0.162 0.020 0.003No. 5 0.186 in. 0.198 0.182 0.020 0.003No. 4 0.208 in. 0.224 0.204 0.020 0.003No. 3 0.234 in. 0.249 0.229 0.020
21、0.003No. 2 0.263 in. 0.278 0.258 0.020 0.003No. 1 0.294 in. 0.311 0.289 0.020 0.003No. 0 0.330 in. 0.347 0.325 0.020 0.003516 in. 0.334 0.312 0.025 0.00338 in. 0.399 0.375 0.025 0.003716 in. 0.462 0.438 0.025 0.00312 in. 0.524 0.500 0.025 0.00358 in. 0.655 0.625 0.030 0.00334 in. 0.786 0.750 0.035 0
22、.00578 in. 0.911 0.875 0.035 0.0051 in. 1.036 1.000 0.035 0.005114 in. 1.290 1.250 0.040 0.005112 in. 1.550 1.500 0.045 0.006134 in. 1.812 1.750 0.055 0.0082 in. 2.070 2.000 0.060 0.010A Multiply inches by 25.4 to get millimetres.B For tubing sizes not listed in this table, the wall thickness of the
23、 nearest largerdiameter shall apply.D922 1828. Physical and Electrical Requirements8.1 Tubing shall conform to the following requirements for physical and electrical properties, using the tests contained in TestMethods D876:8.1.1 FlammabilityThe average duration of burning shall not exceed 15 s and
24、the paper indicator shall show no evidence ofbeing affected.8.1.2 Tensile StrengthThe average tensile strength shall be not less than 2000 psi 15 MPa for Grades A and C, and not lessthan 1800 psi 13 MPa for Grade B. The average ultimate elongation shall be not less than 200 % for Grades A and C and
25、notless than 250 % for Grade B.8.1.3 Effect of Elevated Temperatures When Method A is used, the average loss of ultimate elongation after exposure toelevated temperatures shall be not greater than 35 % for Grades A, B, and C. When Method B is used, the loss of weight afterexposure to elevated temper
26、atures shall be not greater than 15 % of the original weight for Grades A and B, and not greater than10 % for Grade C.8.1.4 After immersion in oil, the average ultimate elongation shall be within the following limits based on the average test valuefor the un-immersed tubing:Grades A and B + 5 % to 2
27、0 %Grade C 20 %8.1.5 Brittleness TemperatureThe brittleness temperature shall be not above 30 C 22 F -30C -22F for GradeA, 55C 67 F -55C -67F for Grade B, and 10 C +14 F -10C +14F for Grade C.8.1.6 Resistance to Penetration at Elevated TemperatureThe average temperature of failure shall be not less
28、than those inTable 3.8.1.7 Volume ResistivityThe volume resistivity shall be not less than 1012 cm for Grades A and C and not less than 1011cm for Grade B.TABLE 2 Metric Dimensional Tolerances of TubingAInside Diameter, mm Thin Wall Standard Wall Thick WallSpecified Size max minWall Thickness,mmTole
29、rances, mmWall Thickness,mmTolerances, mmWall Thickness,mmTolerances, mm0.3 0.4 0.2 0.3 0.1 0.4 0.1 0.5 0.10.5 0.6 0.4 0.3 0.1 0.4 0.1 0.5 0.10.8 0.9 0.7 0.3 0.1 0.4 0.1 0.5 0.11.0 1.15 0.85 0.3 0.1 0.4 0.1 0.5 0.11.5 1.65 1.35 0.3 0.1 0.4 0.1 0.5 0.12.0 2.15 1.85 0.3 0.1 0.4 0.1 0.5 0.12.5 2.65 2.3
30、5 0.3 0.1 0.4 0.1 0.5 0.13 3.15 2.85 0.3 0.1 0.4 0.1 0.5 0.14 4.25 3.75 0.3 0.1 0.5 0.1 0.6 0.15 5.25 4.75 0.3 0.1 0.5 0.1 0.6 0.16 6.25 5.75 0.3 0.1 0.5 0.1 0.6 0.18 8.25 7.75 0.5 0.1 0.7 0.1 0.8 0.1510 10.5 9.5 0.5 0.1 0.7 0.1 0.8 0.1512 12.5 11.5 0.5 0.1 0.7 0.1 0.8 0.1516 16.5 15.5 0.5 0.1 0.85
31、0.15 1.2 0.220 20.5 19.5 0.5 0.1 0.85 0.15 1.2 0.225 25.5 24.5 0.5 0.1 0.85 0.15 1.2 0.230 30.5 29.5 0.5 0.1 0.85 0.15 1.2 0.240 41 39 0.5 0.1 0.85 0.15 1.35 0.1550 51 49 0.5 0.1 0.85 0.15 1.55 0.25A For tubing sizes not listed in this table, the wall thickness of the nearest larger diameter shall a
32、pply.TABLE 3 Average Temperature of FailureGrade Nominal Wall Thickness, in. (mm) Temperature,C, minA all sizes 75B all sizes 80C H0.016 and 0.020 s0.406 and 0.508d0.025,0.030 and 0.035 s0.635,0.762,and 0.889d0.040,0.045,0.055 and 0.060 s1.016,1.143,1.397,and 1.524d707585D922 1838.1.8 Dielectric Bre
33、akdownThe average dielectric breakdown shall be not less than that prescribed for the corresponding wallthickness in Table 4.8.1.9 Dielectric Breakdown at High HumidityThe average dielectric breakdown strength at 96 % relative humidity shall benot less than 90 % for Grade A, 75 % for Grade B, and 85
34、 % for Grade C of the dry value obtained on test.8.1.10 Strain ReliefThe change in length (shrinkage) shall not exceed 18 % for sizes AWG No. 24 to No. 20, inclusive; 14 %for sizes AWG No. 18 to 10, inclusive; and 9 % for sizes AWG No. 9 to 2 in. 50 mm, inclusive.8.1.11 Corrosive EffectThe resistanc
35、e of the copper wire shall increase by not more than 2 %.9. Sampling9.1 For dimensional and visual tests, lots shall be sampled in accordance with Inspection Level II of Practice D3636.9.2 To determine conformity with the requirements for physical and electrical properties, lots shall be sampled in
36、accordancewith Inspection Level II. A quantity large enough to complete all of the required tests shall be selected at random from one fifthof the units sampled.10. Test Methods10.1 Determine the properties enumerated in this specification in accordance with Test Methods D876.11. Inspection11.1 The
37、tubing shall be inspected and tested within 3 weeks of the date of receipt by the purchaser, unless otherwise agreedupon by the purchaser and the seller.12. Rejection12.1 If the number of defects found in the dimensional and visual examination exceed the rejection number forAQL(acceptablequality lev
38、el) = 2.5, or such levels as otherwise agreed upon the lot shall be subject to rejection at the option of the purchaser.12.2 If the results of any test do not conform to the requirements prescribed in this specification, that test shall be repeated ontwo additional specimens from the same lot. If th
39、ese two additional specimens fail to meet the prescribed requirements, thepurchaser shall have the option to reject the lot of tubing represented by that specimen.13. Packaging and Package Marking13.1 PackagingAll tubing shall be properly separated by size when packaged for shipment. In accordance w
40、ith the bestpractice, all tubing shall be packaged to withstand shipment and shall be given ample protection against damage.13.2 MarkingEach item of the order shall be marked with the name of the manufacturer, the total length in feet, size, andcolor.14. Keywords14.1 electrical insulation; nonrigid
41、vinyl chloride polymer tubingTABLE 4 Dielectric Breakdown RequirementsABWall Thickness, in.(mm)Dielectric Breakdown forGrades A and C, kV, minDielectric Breakdown forGrade B, kV, min0.012 (0.305) 10.8 9.30.016 (0.406) 12.5 10.40.020 (0.508) 14.0 11.00.025 (0.635) 15.7 12.00.030 (0.762) 17.1 12.90.03
42、5 (0.889) 18.0 13.50.040 (1.016) 19.2 14.00.045 (1.143) 20.4 14.50.050 (1.270) 21.5 15.00.055 (1.397) 22.8 15.50.060 (1.524) 24.0 16.0A For a wall thickness not listed in this table, the dielectric breakdown value shallbe that prescribed for the nearest smaller thickness.B For tubing sizes not liste
43、d in this table, the wall thickness of the nearest largerdiameter shall apply.D922 184SUMMARY OF CHANGESCommittee D09 has identified the location of selected changes to this specificationstandard since the last issue,issue (D6096 00D922 11AR06,) that may impact the use of this specification.standard
44、. (Approved May 1,2018August 1, 2011.).)(1) Revised Units statement.Added new Subsections 5.2 and 5.2.1 on specimen conditioning.(2) Added 1.3.(3) Revised text throughout.(4) Revised measurements in Table 3 and Table 4.ASTM International takes no position respecting the validity of any patent rights
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47、eceive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM I
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