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ASTM D1693-21
Standard Test Method for Environmental Stress-Cracking of Ethylene Plastics
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STANDARD published on 1.10.2021
The information about the standard:
Designation standards: ASTM D1693-21
Publication date standards: 1.10.2021
SKU: NS-1038123
The number of pages: 11
Approximate weight : 33 g (0.07 lbs)
Country: American technical standard
Category: Technical standards ASTM
The category - similar standards:
Annotation of standard text ASTM D1693-21 :
Keywords:
environmental resistance, polyethylene, stress-cracking,, ICS Number Code 83.080.20 (Thermoplastic materials)
These adjuncts apply to this standard:
ASTM ADJD169302
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Adjunct to D1693 Test Method for Environmental Stress-Cracking of Ethylene Plastics
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ASTM ADJD169303
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Adjunct to D1693 Test Method for Environmental Stress-Cracking of Ethylene Plastics
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ASTM ADJD169304
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Adjunct to D1693 Test Method for Environmental Stress-Cracking of Ethylene Plastics
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Additional information
| Significance and Use | ||||||||||||||||||
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5.1?This test method may be used for routine inspection purposes by subjecting a required number of specimens to the test conditions for a specified time and noting the number that fail. The cracking obtained with the test reagent is indicative of what may be expected from a wide variety of surface-active agents, soaps, and organic substances that are not absorbed appreciably by the polymer. 5.2?Environmental stress-cracking is a property that is highly dependent upon the nature and level of the stresses applied and on the thermal history of the specimen Note 2:?Different types of polyethylene plastics as defined in Specification D1248 are generally tested under different levels of strain and stress. When it is expressly desired to compare the types at equal levels of strain, the specimens for all types should be tested under Condition B, Table 1 5.3?Information from this test method is not intended to be used for direct application to engineering problems. Note 3:?Caution should be used in comparing and ranking
various ethylene plastics into distinct and separate groups by this
test method (see Section 13
and Note 12).
As thermal history is recognized as an important variable, test results by this test method employing laboratory molded samples cannot necessarily be expected to show agreement with test results from samples obtained by other means. The true performance potential of a given ethylene plastic may, however, best be determined with specimens obtained from commercially prepared items 1.1?This test method covers the determination of the susceptibility of ethylene plastics, as defined in Terminology D883, to environmental stress-cracking when subjected to the conditions herein specified. Under certain conditions of stress and in the presence of environments such as soaps, wetting agents, oils, or detergents, ethylene plastics may exhibit mechanical failure by cracking. 1.2?The values stated in SI units are to be regarded as standard. 1.3?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:?There is no known ISO equivalent to this
standard.
1.4?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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