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ASTM D1693-21

Standard Test Method for Environmental Stress-Cracking of Ethylene Plastics

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NORMA vydána dne 1.10.2021

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Provedení	PDF - okamžité stažení - 1 598.80 Kč PDF + redline - ihned - 1 918.60 Kč Tištěné - 1 598.80 Kč Tisk + redline - 1 918.60 Kč
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1 598.80 Kč
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Informace o normě:

Označení normy: ASTM D1693-21
Datum vydání normy: 1.10.2021
Kód zboží: NS-1038123
Počet stran: 11
Přibližná hmotnost: 33 g (0.07 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM

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Kategorie - podobné normy:

Termoplasty

Anotace textu normy ASTM D1693-21 :

Keywords:

environmental resistance, polyethylene, stress-cracking,, ICS Number Code 83.080.20 (Thermoplastic materials)

K této normě náleží tyto doplňky:

ASTM ADJD169303 Doplněk (příloha) k normě

Adjunct to D1693 Test Method for Environmental Stress-Cracking of Ethylene Plastics

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ASTM ADJD169304 Doplněk (příloha) k normě

Adjunct to D1693 Test Method for Environmental Stress-Cracking of Ethylene Plastics

Vybrané provedení:

Anglicky -

Tištěné (934.00 CZK)

Zobrazit všechny technické informace

934.00 Kč

do 7 pracovních dnů

Doplňující informace

Significance and Use

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.

2. Referenced Documents

D3350-21	Standard Specification for Polyethylene Plastics Pipe and Fittings Materials
D4703-16	Standard Practice for Compression Molding Thermoplastic Materials into Test Specimens, Plaques, or Sheets
D4976-12a(2020)	Standard Specification for Polyethylene Plastics Molding and Extrusion Materials (Includes all amendments and changes 11/17/2022).
D618-21	Standard Practice for Conditioning Plastics for Testing
E691-23	Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
D1204-14(2020)	Standard Test Method for Linear Dimensional Changes of Nonrigid Thermoplastic Sheeting or Film at Elevated Temperature
D883-24	Standard Terminology Relating to Plastics
	Apparatus Drawings and Blueprints Detail drawings of the apparatus are available from ASTM Headquarters. Request and .
D1248-16	Standard Specification for Polyethylene Plastics Extrusion Materials for Wire and Cable

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