1.1These test methods cover the testing of general-purpose (Grade A), low-temperature (Grade B), and high-temperature (Grade C)² nonrigid vinyl chloride polymer tubing, or its copolymers with other materials, for use as electrical insulation. For the purpose of these test methods nonrigid tubing shall be tubing having an initial elongation in excess of 100 % at break.

Note 1-These test methods are similar but not identical to those in IEC 60684-2.

1.2The values stated in inch-pound units are to be regarded as standard, except for temperature, which shall be expressed in degrees Celsius. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.3The procedures appear in the following sections:

Procedure	Section	ASTM Reference Standard
Brittleness Temperature	43 - 45	D746
Corrosion Tests	74 - 85	D1000
Dielectric Breakdown Voltage at High Humidity	65 - 73	E104
Dielectric Breakdown Voltage	58 - 64	D149
Dimensional Tests	8 - 14	D374
Effect of Elevated Temperatures	25 - 36	D412
Flammability Test	15 - 21
Oil Resistance Test	35 - 42	D471
Penetration Test	46 - 51
Sampling	6
Strain Relief Test	68 - 73
Tension Test	22 - 24	D412
Test Conditions	7
Volume Resistivity	52 - 57	D257

1.4This 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 and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 5.

1.5For fire test caveats, see Section 15.