ASTM D2671 : 21

Standard Test Methods for Heat-Shrinkable Tubing for Electrical Use

Standard Details

1.1 These test methods cover the testing of heat-shrinkable tubing used for electrical insulation. Materials used include poly(vinyl chloride), polyolefins, fluorocarbon polymers, silicone rubber, and other plastic or elastomeric compounds.

1.2 These test methods appear in the following sections:

Procedure	Section(s)	Test Method(s)
Adhesive Peel Strength	94 – 100
Brittleness Temperature	40	D746
Color	55 and 56	D1535
Color Stability	57 – 62	D1535
Conditioning	7	D618
Copper Stability	89
Corrosion Testing	85 – 91
Dielectric Breakdown	20 – 25	D149
Dimensions	8 – 13	D876
Flammability	68	D8355 (Methods A, C, or D)
Fluid Resistance	63 – 67
Fungus Resistance	100 – 104
Heat Resistance	49 – 54
Heat Shock	26 – 30
Low-temperature Properties	36 – 43
Restricted Shrinkage	14 – 19
Selection of Test Specimens	6
Secant Modulus	77 – 80	D882
Storage Life	31 – 35
Specific Gravity	69 and 70	D792
Stress Modulus	81 – 84	D412
Tensile Strength and Ultimate Elongation	44 – 48	D412
Thermal Endurance	92 and 93
Volume Resistivity	71 – 74	D257
Water Absorption	75 and 76	D570
Melting Point	100 – 104	D3418

1.3 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.

1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 5 and for fire test safety caveats see Test Methods D8355.

Note 1: These test methods are similar, but not identical to, those in IEC 60684-2 (see also Note 9).

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