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ASTM F495-99a(2011)

(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

SIGNIFICANCE AND USE
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
D
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
30-Apr-2011
ICS
21.140 - Seals, glands
23.100.60 - Filters, seals and contamination of fluids
Technical Committee
F03 - Gaskets
Drafting Committee
F03.40 - Chemical Test Methods
Current Stage
Ref Project

Relations

Replaces
ASTM F495-99a(2004) - Standard Test Method for Weight Loss of Gasket Materials Upon Exposure to Elevated Temperatures
Effective Date
01-May-2011
Replaced By
ASTM F495-99a(2019) - Standard Test Method for Weight Loss of Gasket Materials Upon Exposure to Elevated Temperatures
Effective Date
01-May-2019
Referred By
ASTM E2785-14(2022) - Standard Test Method for Exposure of Firestop Materials to Severe Environmental Conditions
Effective Date
01-May-2011

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ASTM F495-99a(2011) - Standard Test Method for Weight Loss of Gasket Materials Upon Exposure to Elevated TemperaturesASTM F495-99a(2011) - Standard Test Method for Weight Loss of Gasket Materials Upon Exposure to Elevated Temperatures
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ASTM F495-99a(2011) - Standard Test Method for Weight Loss of Gasket Materials Upon Exposure to Elevated Temperatures
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: F495 − 99a (Reapproved 2011)
Standard Test Method for
Weight Loss of Gasket Materials Upon Exposure to Elevated
Temperatures
ThisstandardisissuedunderthefixeddesignationF495;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 5. Conditioning
1.1 This test method covers the determination of gasket 5.1 Afterthespecimenhasbeencutorbrokenupandplaced
material weight loss upon exposure to elevated temperatures.
in the crucible, heat it in the circulating air oven for 1 h at
100°C (212°F) and allow it to cool to 21 to 30°C (70 to 86°F)
1.2 This test method may include hazardous materials,
in the desiccator.
operations, and equipment.
1.3 The values stated in SI units are to be regarded as the 6. Number of Tests
standard. The values given in parentheses are for information
6.1 A minimum of three tests shall be run on separate
only.
specimens taken from the same sample with the results
1.4 This standard does not purport to address all of the
averaged, unless otherwise agreed upon between the producer
safety concerns, if any, associated with its use. It is the
and the user.
responsibility of the user of this standard to establish appro-
7. Procedure
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. 7.1 Heat a clean crucible for 30 min at the specified test
temperature. Cool to 21 to 30°C (70 to 86°F) in a desiccator.
2. Significance and Use
Weigh the crucible on the analytical balance and record as W .
2.1 Weight loss represents the amount of combustibles and
7.2 Place the cut or broken-up specimen in the crucible and
volatiles of the material at various temperatures between
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 desiccator, weigh the specimen
accuracy of 65°C (9°F).
and crucible and record the weight as W .
7.3.1 For tests at 815°C (1499°F) the specimen should be
3.2 Porcelain Crucible.
ignited initially in the crucible by supporting over a flame in an
3.3 Analytical Balance.
exhausted hood until the sample has extinguished.
3.4 Desiccator, containing anhydrous calcium chloride or
NOTE 1—It is felt that the life of the heater elements in a muffle furnace
silica gel.
will be greatly extended if the majority of the organics in a specimen are
3.5 Circulating Air Oven, maintained at 10
...

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