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.

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.

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 Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.