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ASTM F495-99a(2019)

(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
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.

General Information

Status
Published
Publication Date
30-Apr-2019
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(2011) - 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-2019

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


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.
Designation: F495 − 99a (Reapproved 2019)
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 3.5 Circulating Air Oven, maintained at 100 6 2°C (2126
3.6°F).
1.1 This test method covers the determination of gasket
material weight loss upon exposure to elevated temperatures.
4. Test Specimens
1.2 This test method may include hazardous materials,
4.1 Specimens shall consist ofa5to 10-g quantity of the
operations, and equipment.
material. The specimens shall be cut into pieces not larger than
1.3 The values stated in SI units are to be regarded as the
12.7 mm ( ⁄2 in.) square to allow all of it to be placed within the
standard. The values given in parentheses are for information
crucible.
only.
1.4 This standard does not purport to address all of the
5. Conditioning
safety concerns, if any, associated with its use. It is the
5.1 Afterthespecimenhasbeencutorbrokenupandplaced
responsibility of the user of this standard to establish appro-
in the crucible, heat it in the circulating air oven for 1 h at
priate safety, health, and environmental practices and deter-
100°C (212°F) and allow it to cool to 21 to 30°C (70 to 86°F)
mine the applicability of regulatory limitations prior to use.
in the desiccator.
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the 6. Number of Tests
Development of International Standards, Guides and Recom-
6.1 A minimum of three tests shall be run on separate
mendations issued by the World Trade Organization Technical
specimens taken from the same sample with the results
Barriers to Trade (TBT) Committee.
averaged, unless otherwise agreed upon between the producer
and the user.
2. Significance and Use
2.1 Weight loss represents the amount of combustibles and
7. Procedure
volatiles of the material at various temperatures between
7.1 Heat a clean crucible for 30 min at the specified test
315°C (600°F) and 815°C (1499°F).This procedure should not
temperature. Cool to 21 to 30°C (70 to 86°F) in a desiccator.
be used to determine percent of binder content.
Weigh the crucible on the analytical balance and record as W .
3. Apparatus
7.2 Place the cut or broken-up specimen in the crucible and
3.1 Muffle Furnace, capable of maintaining a temperature
condition in accordance with 5.1. Weigh the specimen and
range between 315°C (600°F) and 815°C (1499°F) with an
crucible and record the weight as W .
accuracy of 65°C (9°F).
7.3 Place the specimen and the crucible in the muffle
3.2 Porcelain Crucible.
furnace at the temperature level determined for this test for 60
3.3 Analytical Balance. min (recommend 61 min), cool the specimen and the crucible
to 21 to 30°C (70 to 86°F) in a desiccator,
...

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This specification covers grades of fuel oil intended for use in various types of fuel-oil-burning equipment under various climatic and operating conditions. These grades include the following: Grades No. 1 S5000, No. 1 S500, No. 2 S5000, and No. 2 S500 for use in domestic and small industrial burners; Grades No. 1 S5000 and No. 1 S500 adapted to vaporizing type burners or where storage conditions require low pour point fuel; Grades No. 4 (Light) and No. 4 (Heavy) for use in commercial/industrial burners; and Grades No. 5 (Light), No. 5 (Heavy), and No. 6 for use in industrial burners. Preheating is usually required for handling and proper atomization. The grades of fuel oil shall be homogeneous hydrocarbon oils, free from inorganic acid, and free from excessive amounts of solid or fibrous foreign matter. Grades containing residual components shall remain uniform in normal storage and not separate by gravity into light and heavy oil components outside the viscosity limits for the grade. The grades of fuel oil shall conform to the limiting requirements prescribed for: (1) flash point, (2) water and sediment, (3) physical distillation or simulated distillation, (4) kinematic viscosity, (5) Ramsbottom carbon residue, (6) ash, (7) sulfur, (8) copper strip corrosion, (9) density, and (10) pour point. The test methods for determining conformance to the specified properties are given.
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