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ASTM F495-99a

(Test Method)

Standard Test Method for Weight Loss of Gasket Materials Upon Exposure to Elevated Temperatures

Standard Test Method for Weight Loss of Gasket Materials Upon Exposure to Elevated Temperatures

SCOPE
1.1 This test method covers the determination of gasket material weight loss upon exposure to elevated temperatures.  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.3 This standard does not purport to address all of the safety problems, 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.

General Information

Status
Historical
Publication Date
09-Jul-1999
ICS
21.140 - Seals, glands
Technical Committee
F03 - Gaskets
Drafting Committee
F03.40 - Chemical Test Methods
Current Stage
Ref Project

Relations

Replaced By
ASTM F495-99a(2004) - Standard Test Method for Weight Loss of Gasket Materials Upon Exposure to Elevated Temperatures
Effective Date
01-Apr-2004
Referred By
ASTM E2785-14(2022) - Standard Test Method for Exposure of Firestop Materials to Severe Environmental Conditions
Effective Date
10-Jul-1999

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ASTM F495-99a - Standard Test Method for Weight Loss of Gasket Materials Upon Exposure to Elevated TemperaturesASTM F495-99a - Standard Test Method for Weight Loss of Gasket Materials Upon Exposure to Elevated Temperatures
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ASTM F495-99a - Standard Test Method for Weight Loss of Gasket Materials Upon Exposure to Elevated Temperatures
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Standards Content (Sample)


NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F 495 – 99a
Standard Test Method for
Weight Loss of Gasket Materials Upon Exposure to Elevated
Temperatures
This standard is issued under the fixed designation F 495; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 5. Conditioning
1.1 This test method covers the determination of gasket 5.1 After the specimen has been cut or broken up and placed
material weight loss upon exposure to elevated temperatures. in the crucible, heat it in the circulating air oven for1hat
1.2 The values stated in SI units are to be regarded as the 100°C (212°F) and allow it to cool to 21 to 30°C (70 to 86°F)
standard. The values given in parentheses are for information in the desiccator.
only.
6. Number of Tests
1.3 This standard may include hazardous materials, opera-
tions, and equipment. 6.1 A minimum of three tests shall be run on separate
specimens taken from the same sample with the results
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the averaged, unless otherwise agreed upon between the producer
and the user.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
7. Procedure
bility of regulatory limitations prior to use.
7.1 Heat a clean crucible for 30 min at the specified test
2. Significance and Use
temperature. Cool to 21 to 30°C (70 to 86°F) in a desiccator.
Weigh the crucible on the anylitical balance and record as W .
2.1 Weight loss represents the amount of combustibles and
volatiles of the material at various temperatures between 7.2 Place the cut or broken up specimen in the crucible and
condition in accordance with 5.1. Weigh the specimen and
315°C (600°F) and 815°C (1499°F). This procedure should not
crucible and record the weight as W .
be used to determine percent of binder content.
7.3 Place the specimen and the crucible in the muffle
3. Apparatus
furnace at the temperature level determined for this test for 60
3.1 Muffle Furnace, capable of maintaining a temperature min (recommend 61 min), cool the specimen and the crucible
range between 315°C (600°F) and 815°C (1499°F) with an to 21 to 30°C (70 to 86°F) in a dessicator, weigh the specimen
accuracy of 65°C (9°F). and crucible and record the weight as W .
3.2 Porcelain Crucible. 7.3.1 For tests at 815°C (1499°F) the specimen should be
3.3 Analytical Balance. ignited initially in the crucible by supporting over a flame in an
3.4 Desiccator, containing anhydrous calcium chloride or exhausted hood until the sample has extinguished.
silica gel.
NOTE 1—It is felt that the life of the heater elements in a muffle furnace
3.5 Circulating
...

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ASTM F495-99a(2019)(Test Method)
Standard Test Method for Weight Loss of Gasket Materials Upon Exposure to Elevated Temperatures

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2.1 Weight loss represents the amount of combustibles and volatiles of the material at various temperatures between 315°C (600°F) and 815°C (1499°F). This procedure should not be used to determine percent of binder content.
SCOPE
1.1 This test method covers the determination of gasket material weight loss upon exposure to elevated temperatures.  
1.2 This test method may include hazardous materials, operations, and equipment.  
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
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.  
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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