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4.1 These test methods include most of the test methods that are considered important to characterize nonrigid vinyl chloride polymer tubing. While they were developed initially for this type of extruded tubing, their use is not limited to this type of tubing.
4.2 Variations in these test methods or alternate contemporary methods are acceptable for use determine the values for the properties in this standard provided such methods ensure quality levels and measurement accuracy equal to or better than those prescribed herein. It is the responsibility of the organizations using alternate test methods to be able to demonstrate this condition. In cases of dispute, the test methods specified herein shall be used.
Note 2—Provision for alternate methods is necessary because of (1) the desire to simplify procedures for specific applications without altering the result, and (2) the desire to eliminate redundant testing and use data generated during manufacturing process control, including that generated under Statistical Process Control (SPC) conditions, using equipment and methods other than those specified herein. An example would be the use of laser micrometers or optical comparators to measure dimensions. Область применения1.1 These 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 60684–2.1.2 The 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.
1.3 The 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
1.4 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 and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 5.
1.5 For fire test caveats, see Section 15.