1、Designation: D 922 00a (Reapproved 2006)An American National StandardStandard Specification forNonrigid Vinyl Chloride Polymer Tubing1This standard is issued under the fixed designation D 922; the number immediately following the designation indicates the year oforiginal adoption or, in the case of
2、revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specifica
3、tion covers nonrigid tubing of vinyl chlo-ride 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.NOTE 1This standard is similar but not identical to IEC-60
4、684-3-100to -105.2. Referenced Documents2.1 ASTM Standards:2D 876 Test Methods for Nonrigid Vinyl Chloride PolymerTubing Used for Electrical InsulationD 1711 Terminology Relating to Electrical InsulationD 3636 Practice for Sampling and Judging Quality of SolidElectrical Insulating MaterialsE 176 Ter
5、minology of Fire Standards2.2 IEC Standards:IEC-60684-3-100 to -105 Flexible insulating sleeving, Part3, Sheets 100 to 105: Extruded PVC sleeving33. Terminology3.1 Definitions:3.1.1 For definitions pertaining to electrical insulation, referto Terminology D 1711.3.1.2 For definitions pertaining to fi
6、re standards, refer toTerminology E 176.4. Ordering Information4.1 Orders for material covered by this specification shallinclude the following:4.1.1 Grade of tubing,4.1.2 Size and color,4.1.3 Total length in feet or metres,4.1.4 Length of cut pieces in inches or centimetres, if any,and4.1.5 Amount
7、of tubing on each spool or in each coil, if notstandard packaging with the supplier.5. Color5.1 Clear transparent, black, white, yellow, green, blue, andred shall be considered standard colors. Other colors shall beconsidered special. The color desired shall be specified in thepurchase order.6. Dime
8、nsional Requirements6.1 Inside DiameterThe inside diameter of the tubingshall conform to the requirements prescribed in Table 1 orTable 2.6.2 Wall ThicknessThe wall thickness of the tubing shallconform to the requirements prescribed in Table 1 or Table 2.6.3 Commercial LengthsThe tubing shall be sup
9、plied incontinuous lengths.7. Workmanship, Finish, and Appearance7.1 The surface shall be smooth, free of blisters, cracks, orany other defects that may detrimentally affect its suitability forthe service intended. It shall not be subject to peeling, scaling,or flaking.8. Physical and Electrical Req
10、uirements8.1 Tubing shall conform to the following requirements forphysical and electrical properties:8.1.1 FlammabilityThe average duration of burning shallnot exceed 15 s and the paper indicator shall show no evidenceof being affected.8.1.2 Tensile StrengthThe average tensile strength shallbe not
11、less than 2000 psi 15 MPa for GradesAand C, and notless than 1800 psi 13 MPa for Grade B. The average ultimateelongation shall be not less than 200 % for GradesAand C andnot less than 250 % for Grade B.8.1.3 Effect of Elevated Temperatures When Method A isused, the average loss of ultimate elongatio
12、n after exposure toelevated temperatures shall be not greater than 35 % for Grades1This specification is under the jurisdiction of ASTM Committee D09 onElectrical and Electronic Insulating Materials and is the direct responsibility ofSubcommittee D 09.07 on Flexible and Rigid Insulating Materials.Cu
13、rrent edition approved April 1, 2006. Published April 2006. Originallyapproved in 1947. Last previous edition approved in 2000 as D 922 00a.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volum
14、e information, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States
15、.A, B, and C. When Method B is used, the loss of weight afterexposure to elevated temperatures shall be not greater than15 % of the original weight for GradesAand B, and not greaterthan 10 % for Grade C.8.1.4 After immersion in oil, the average ultimate elonga-tion shall be within the following limi
16、ts based on the averagetest value for the un-immersed tubing:GradesAandB +5%to20%Grade C 6 20 %8.1.5 Brittleness TemperatureThe brittleness temperatureshall be not above 30 C 22 F for Grade A, 55 C 67F for Grade B, and 10 C +14 F for Grade C.8.1.6 Resistance to Penetration at Elevated TemperatureThe
17、 average temperature of failure shall be not less than thosein Table 3.8.1.7 Volume ResistivityThe volume resistivity shall benot less than 1012Vcm for Grades A and C and not less than1011Vcm for Grade B.8.1.8 Dielectric BreakdownThe average dielectric break-down shall be not less than that prescrib
18、ed for the correspond-ing wall thickness in Table 4.8.1.9 Dielectric Breakdown at High HumidityThe aver-age dielectric breakdown strength at 96 % relative humidityshall be not less than 90 % for GradeA, 75 % for Grade B, and85 % for Grade C of the dry value obtained on test.8.1.10 Strain ReliefThe c
19、hange in length (shrinkage) shallnot exceed 18 % for sizes AWG No. 24 to No. 20, inclusive;14 % for sizes AWG No. 18 to 10, inclusive; and 9 % for sizesAWG No. 9 to 2 in. 50 mm, inclusive.8.1.11 Corrosive EffectThe resistance of the copper wireshall increase by not more than 2 %.9. Sampling9.1 For d
20、imensional and visual tests, lots shall be sampled inaccordance with Inspection Level II of Practice D 3636.9.2 To determine conformity with the requirements forphysical and electrical properties, lots shall be sampled inaccordance with Inspection Level II. A quantity large enoughto complete all of
21、the required tests shall be selected at randomfrom one fifth of the units sampled.10. Test Methods10.1 Determine the properties enumerated in this specifica-tion in accordance with Test Methods D 876.11. Inspection11.1 The tubing shall be inspected and tested within 3 weeksof the date of receipt by
22、the purchaser, unless otherwise agreedupon by the purchaser and the seller.12. Rejection12.1 If the number of defects found in the dimensional andvisual examination exceed the rejection number for AQL(acceptable quality level) = 2.5, or such levels as otherwiseagreed upon the lot shall be subject to
23、 rejection at the option ofthe purchaser.12.2 If the results of any test do not conform to therequirements prescribed in this specification, that test shall berepeated on two additional specimens from the same lot. Ifthese two additional specimens fail to meet the prescribedrequirements, the lot of
24、tubing represented by that specimenmay be rejected at the option of the purchaser.13. Packaging and Package Marking13.1 PackagingAll tubing shall be properly separated bysize when packaged for shipment. In accordance with the bestpractice, all tubing shall be packaged to withstand shipmentand shall
25、be given ample protection against damage.13.2 MarkingEach item of the order shall be marked withthe name of the manufacturer, the total length in feet, size, andcolor.14. Keywords14.1 electrical insulation; nonrigid vinyl chloride polymertubingTABLE 1 Dimensional Tolerances of TubingA,BSpecified Siz
26、eInside Diameter, in. Wall Thicknessmax minWall Thick-ness, in.Tolerances,plus orminus, in.No. 24 0.022 in. 0.027 0.020 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.
27、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 0.106 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 0.02
28、0 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 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 0.0
29、03716 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 0.00578 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
30、.010AMultiply inches by 25.4 to get millimetres.BFor tubing sizes not listed in this table, the wall thickness of the nearest largerdiameter shall apply.D 922 00a (2006)2TABLE 2 Metric Dimensional Tolerances of TubingAInside Diameter, mm Thin Wall Standard Wall Thick WallSpecified Size max minWall T
31、hickness,mmTolerances,6 mmWall Thickness,mmTolerances,6 mmWall Thickness,mmTolerances,6 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
32、.5 0.12.5 2.65 2.35 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
33、15.5 0.5 0.1 0.85 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 0.25AFor tubing sizes not listed in this table, the wall thickness of the nearest larger
34、 diameter shall apply.TABLE 3 Average Temperature of FailureGrade Nominal Wall Thickness, in.ATemperature,C, minA all sizes 75B all sizes 80C H0.016 and 0.0200.025, 0.030 and 0.0350.040, 0.045, 0.055 and 0.060707585AMultiply inches by 25.4 to get millimetres.D 922 00a (2006)3ASTM International takes
35、 no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own resp
36、onsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addresse
37、d to ASTM International Headquarters. Your comments will receive 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
38、address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phon
39、e), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).TABLE 4 Dielectric Breakdown RequirementsABWall Thickness, in.CDielectric Breakdown forGrades A and C, kV, minDielectric Breakdown forGrade B, kV, min0.012 10.8 9.30.016 12.5 10.40.020 14.0 11.00.025 15.7
40、12.00.030 17.1 12.90.035 18.0 13.50.040 19.2 14.00.045 20.4 14.50.050 21.5 15.00.055 22.8 15.50.060 24.0 16.0AFor a wall thickness not listed in this table, the dielectric breakdown value shallbe that prescribed for the nearest smaller thickness.BFor tubing sizes not listed in this table, the wall thickness of the nearest largerdiameter shall apply.CMultiply inches by 25.4 to get millimetres.D 922 00a (2006)4
