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Homepage>ASTM Standards>29>29.035>29.035.01>ASTM D0470-21 - Standard Test Methods for Crosslinked Insulations and Jackets for Wire and Cable
Released: 15.01.2021

ASTM D0470-21 - Standard Test Methods for Crosslinked Insulations and Jackets for Wire and Cable

Standard Test Methods for Crosslinked Insulations and Jackets for Wire and Cable

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Standard number:D0470-21
Keywords:capacitance; cold bend; crosslinked insulation; dielectric withstand; dissipation factor; flammability; heat distortion; heat exposure (aging); horizontal flame test; insulation resistance; mineral filler content; oil immersion; ozone resistance; partial-discharge extinction level; permittivity; set test; surface resistivity; tear test; track resistance; u-bend discharge; water absorption tests ;

1.1 These test methods cover procedures for testing crosslinked insulations and jackets for wire and cable. To determine the test to be made on the particular insulation or jacket, refer to the product specification for that type. These test methods do not apply to the class of products known as flexible cords.

1.2 In many instances the insulation or jacket cannot be tested unless it has been formed around a conductor or cable. Therefore, tests are done on insulated or jacketed wire or cable in these test methods solely to determine the relevant property of the insulation or jacket and not to test the conductor or completed cable.

1.3 These test methods appear in the following sections:

Test Method




AC and DC Voltage Withstand Tests

22 to 29

Capacitance and Dissipation Factor Tests

38 to 44

Cold Bend


Cold Bend, Long-time Voltage Test on Short Specimens

51 to 57

Double AC Voltage Test on Short Specimens

45 to 50

Electrical Tests of Insulation

17 to 64

Heat Distortion Test


Horizontal Flame Test

(Test Method D7936)

Insulation Resistance Tests on Completed Cable

30 to 37

Mineral Filler Content, Determination of

107 to 111

Ozone Resistance Test

87 to 99

Partial-Discharge Test

58 to 64

Physical Tests of Insulation and Jacket Compounds

5 to 16

Surface Resistivity Test

112 to 116

Track Resistance Test

125 to 128

U-Bend Discharge Test

117 to 121

Water Absorption Test

65 to 71

Water Absorption Test, Accelerated

72 to 86

Water Absorption Test on Fibrous Coverings

101 to 106

1.4 Whenever two sets of values are presented, in different units, the values in the first set are the standard, while those in the parentheses are for information only.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazards see Section 4.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.