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 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.