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ASTM D 6743 : 2011 : R2015

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Test Method for Thermal Stability of Organic Heat Transfer Fluids

Available format(s)

Hardcopy , PDF

Superseded date

15-12-2020

Language(s)

English

Published date

24-07-2015

CONTAINED IN VOL. 05.04, 2015 Defines the determination of the thermal stability of unused organic heat transfer fluids.

1.1This test method covers the determination of the thermal stability of unused organic heat transfer fluids. The procedure is applicable to fluids used for the transfer of heat at temperatures both above and below their boiling point (refers to normal boiling point throughout the text unless otherwise stated). It is applicable to fluids with maximum bulk operating temperature between 260 °C (500 °F) and 454 °C (850 °F). The procedure shall not be used to test a fluid above its critical temperature. In this test method, the volatile decomposition products are in continuous contact with the fluid during the test. This test method will not measure the thermal stability threshold (the temperature at which volatile oil fragments begin to form), but instead will indicate bulk fragmentation occurring for a specified temperature and testing period. Because potential decomposition and generation of high pressure gas may occur at temperatures above 260 °C (500 °F), do not use this test method for aqueous fluids or other fluids which generate high-pressure gas at these temperatures.

1.2DIN Norm 51528 covers a test method that is similar to this test method.

1.3The applicability of this test method to siloxane-based heat transfer fluids has not been determined.

1.4The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.

1.5This 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 warning statements, see 7.2, 8.8, 8.9, and 8.10.

Committee
D 02
DocumentType
Test Method
Pages
5
ProductNote
Reconfirmed 2015
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

ASTM D 7665 : 2017 Standard Guide for Evaluation of Biodegradable Heat Transfer Fluids
ASTM D 5372 : 2017 Standard Guide for Evaluation of Hydrocarbon Heat Transfer Fluids
ASTM D 7863 : 2017 Standard Guide for Evaluation of Convective Heat Transfer Coefficient of Liquids

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