ASTM D2671 - 13 Standard Test Methods for Heat-Shrinkable Tubing for Electrical Use

ASTM D2671 - 13

Standard Test Methods for Heat-Shrinkable Tubing for Electrical Use

Active Standard ASTM D2671 | Developed by Subcommittee: D09.07

Book of Standards Volume: 10.02

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Significance and Use

4.1 These test methods include most of the important tests used to characterize heat-shrinkable tubing. They are intended primarily for, but not limited to, extruded heat-shrinkable tubing.

4.2 It is acceptable to use variations in these test methods or alternate contemporary methods of measurement to 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 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.

1. Scope

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 The procedures appear in the following sections:

Procedure	Sections	ASTM Method Reference
Adhesive Peel Strength	98 – 104
Brittleness Temperature	40	D746
Color	55 and 56	D1535
Color Stability	57 – 62	D1535
Conditioning	7	D618
Copper Stability	93
Corrosion Testing	89 – 95
Dielectric Breakdown	20 – 25	D149
Dimensions	8 – 13	D876
Flammability	68 – 72	D876
Fluid Resistance	63 – 67
Fungus Resistance	104 – 108
Heat Resistance	49 – 54
Heat Shock	26 – 30
Low-Temperature Properties	36 – 43
Restricted Shrinkage	14 – 19
Selection of Test Specimens	6
Secant Modulus	81 – 84	D882
Storage Life	31 – 35
Specific Gravity	73 and 74	D792
Stress Modulus	85 – 88	D412
Tensile Strength and Ultimate Elongation	44 – 48	D412
Thermal Endurance	96 and 97
Volume Resistivity	75 – 78	D257
Water Absorption	79 and 80	D570
Melting Point	104 – 108	D3418

1.3 This is a fire-test-response standard.

1.4 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.

1.5 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 and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Sections 5 and 68.2.

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

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D149 Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies

D257 Test Methods for DC Resistance or Conductance of Insulating Materials

D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers--Tension

D570 Test Method for Water Absorption of Plastics

D618 Practice for Conditioning Plastics for Testing

D746 Test Method for Brittleness Temperature of Plastics and Elastomers by Impact

D792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement

D876 Test Methods for Nonrigid Vinyl Chloride Polymer Tubing Used for Electrical Insulation

D882 Test Method for Tensile Properties of Thin Plastic Sheeting

D1535 Practice for Specifying Color by the Munsell System

D1711 Terminology Relating to Electrical Insulation

D3418 Test Method for Transition Temperatures and Enthalpies of Fusion and Crystallization of Polymers by Differential Scanning Calorimetry

E176 Terminology of Fire Standards

ICS Code

ICS Number Code 29.120.99 (Other electrical accessories)

Referencing This Standard

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DOI: 10.1520/D2671

Citation Format

ASTM D2671-13, Standard Test Methods for Heat-Shrinkable Tubing for Electrical Use, ASTM International, West Conshohocken, PA, 2013, www.astm.org