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ASTM D2671-21
Standard Test Methods for Heat-Shrinkable Tubing for Electrical Use
Přeložit název
NORMA vydána dne 1.1.2021
Informace o normě:
Označení normy: ASTM D2671-21
Datum vydání normy: 1.1.2021
Kód zboží: NS-1018231
Počet stran: 18
Přibližná hmotnost: 54 g (0.12 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Kategorie - podobné normy:
Anotace textu normy ASTM D2671-21 :
Keywords:
adhesive peel strength, brittleness temperature, color, color stability, copper corrosion, dielectric breakdown voltage, dielectric strength, flame resistance, fluid resistance, fungus resistance, heat resistance, heat shock, heat shrinkable tubing, inside diameter, length, low temperature, melting point, restricted shrinkage, secant modulus, specific gravity, storage life, stress modulus, temperature index, tensile strength, test methods, thermal endurance, thermal endurance graph, tubing
Doplňující informace
| Significance and Use | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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.
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| 1. Scope | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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:
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. 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 Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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| 2. Referenced Documents | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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