ASTM F145-72(2016)
(Practice)Standard Practice for Evaluating Flat-Faced Gasketed Joint Assemblies
Standard Practice for Evaluating Flat-Faced Gasketed Joint Assemblies
SIGNIFICANCE AND USE
4.1 Gasket compressions produced by bolt loads in a flanged joint are important in the application engineering of a joint assembly. They are related to the ability of a gasket to seal, to maintain tightness on assembly bolts, and to a variety of other gasket properties that determine the service behavior of a joint assembly. Thus, being able to determine the degree of compression in a gasket under the bolt loading will permit one to make qualitative predictions of the behavior of a joint assembly when it comes in contact with the application or service environment. With the plug test, bending of a flange facing between bolt centers can be measured; however, in a few highly distortable flanges the maximum bending between bolt centers may not be detected.
4.2 The variation in gasket compressions at selected points in a flat-face joint assembly reveals the degree of flange distortion or the ability of the flange to distribute satisfactorily the compressive forces from bolt loads throughout the gasket.
SCOPE
1.1 This practice permits measurement of gasket compression resulting from bolt loading on a flat-face joint assembly at ambient conditions.
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 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
Buy Standard
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: F145 − 72 (Reapproved 2016)
Standard Practice for
Evaluating Flat-Faced Gasketed Joint Assemblies
This standard is issued under the fixed designation F145; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope of other gasket properties that determine the service behavior
of a joint assembly. Thus, being able to determine the degree of
1.1 This practice permits measurement of gasket compres-
compression in a gasket under the bolt loading will permit one
sion resulting from bolt loading on a flat-face joint assembly at
to make qualitative predictions of the behavior of a joint
ambient conditions.
assembly when it comes in contact with the application or
1.2 The values stated in SI units are to be regarded as the
service environment. With the plug test, bending of a flange
standard. The values given in parentheses are for information
facing between bolt centers can be measured; however, in a
only.
few highly distortable flanges the maximum bending between
1.3 This standard does not purport to address all of the bolt centers may not be detected.
safety concerns, if any, associated with its use. It is the
4.2 The variation in gasket compressions at selected points
responsibility of the user of this standard to establish appro-
in a flat-face joint assembly reveals the degree of flange
priate safety and health practices and determine the applica-
distortion or the ability of the flange to distribute satisfactorily
bility of regulatory limitations prior to use.
the compressive forces from bolt loads throughout the gasket.
2. Referenced Documents
5. Apparatus (see Fig. 1)
2.1 ASTM Standards:
5.1 Test Assembly, any flat-face flange design.
E171 Practice for Conditioning and Testing Flexible Barrier
5.2 Torque Indicating Device, for bolt loading.
Packaging
5.3 Dial Gage Indicator, graduated in 0.00254 mm (0.0001
3. Summary of Practice
in.) to measure thickness of the solder plugs and the uncom-
pressed gasket.
3.1 The gasket compression and flange distortion are ob-
tained from compressed-thickness measurements on cylindri-
5.4 Leather Punch, for punching holes in the gasket and
cally shaped soft-solder plugs (50-50 lead-tin by weight)
fabricating the solder plugs.
inserted into holes, drilled or punched through the gasket in the
5.5 Tweezers, to conveniently handle the solder plugs.
thickness direction. Initial compression is accomplished in the
5.6 Solder Plugs—The solder must be made into a flat strip.
flanged-joint assembly when the bolts are loaded at ambient
This can be done by compressing wire in a vise, a pair of
temperature. Solder, being inelastic, will remain at the com-
flanges, pliers, or passing it between two calender rolls. The
pressed thickness of the gasket after the joint is subsequently
solder plugs are punched from the strip by means of the leather
disassembled.
punch. Recommended plug diameter is 0.8 mm ( ⁄32 in.) and
4. Significance and Use
the height need only be such that the plug is compressed by the
flanges when the gasket is also compressed. The initial
4.1 Gasket compressions produced by bolt loads in a
thickness of the plug and gasket before compression need not
flanged joint are important in the application engineering of a
be equal.
joint assembly. They are related to the ability of a gasket to
seal, to maintain tightness on assembly bolts, and to a variety
6. Test Specimens
6.1 Three gasket specimens shall be tested. The size and
This practice is under the jurisdiction of ASTM Committee F03 on Gaskets and
shape of the specimens must be such as to fit the particular
is the direct responsibility of Subcommittee F03.20 on Mechanical Test Methods.
flange design.
Current edition approved Oct. 1, 2016. Published October 2016. Originally
approved in 1972. Last previous edition approved in 2009 as F145 – 72 (2009).
7. Conditioning
DOI: 10.1520/F0145-72R16.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
7.1 When the test is performed on an assembly line or in a
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
service environment, sufficient time should elapse for the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. flanges, bolts, and gasket to reach equilibrium with the ambient
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F145 − 72 (2016)
FIG. 1 Equipment for Performing the Solder-Plug Test of Gasket Compressions
temperature and humidity conditions before assembly. (Heavy where:
castings or forgings may require 8 to 24 h or more, contrasted
C = percentage compression in the gasket,
to a brief period for light s
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F145 − 72 (Reapproved 2009) F145 − 72 (Reapproved 2016)
Standard Practice for
Evaluating Flat-Faced Gasketed Joint Assemblies
This standard is issued under the fixed designation F145; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This practice permits measurement of gasket compression resulting from bolt loading on a flat-face joint assembly at
ambient conditions.
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 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.
2. Referenced Documents
2.1 ASTM Standards:
E171 Practice for Conditioning and Testing Flexible Barrier Packaging
3. Summary of Practice
3.1 The gasket compression and flange distortion are obtained from compressed-thickness measurements on cylindrically
shaped soft-solder plugs (50-50 lead-tin by weight) inserted into holes, drilled or punched through the gasket in the thickness
direction. Initial compression is accomplished in the flanged-joint assembly when the bolts are loaded at ambient temperature.
Solder, being inelastic, will remain at the compressed thickness of the gasket after the joint is subsequently disassembled.
4. Significance and Use
4.1 Gasket compressions produced by bolt loads in a flanged joint are important in the application engineering of a joint
assembly. They are related to the ability of a gasket to seal, to maintain tightness on assembly bolts, and to a variety of other gasket
properties that determine the service behavior of a joint assembly. Thus, being able to determine the degree of compression in a
gasket under the bolt loading will permit one to make qualitative predictions of the behavior of a joint assembly when it comes
in contact with the application or service environment. With the plug test, bending of a flange facing between bolt centers can be
measured; however, in a few highly distortable flanges the maximum bending between bolt centers may not be detected.
4.2 The variation in gasket compressions at selected points in a flat-face joint assembly reveals the degree of flange distortion
or the ability of the flange to distribute satisfactorily the compressive forces from bolt loads throughout the gasket.
5. Apparatus (see Fig. 1)
5.1 Test Assembly, any flat-face flange design.
5.2 Torque Indicating Device, for bolt loading.
5.3 Dial Gage Indicator, graduated in 0.00254 mm (0.0001 in.) to measure thickness of the solder plugs and the uncompressed
gasket.
5.4 Leather Punch, for punching holes in the gasket and fabricating the solder plugs.
5.5 Tweezers, to conveniently handle the solder plugs.
This practice is under the jurisdiction of ASTM Committee F03 on Gaskets and is the direct responsibility of Subcommittee F03.20 on Mechanical Test Methods.
Current edition approved Oct. 1, 2009Oct. 1, 2016. Published March 2010October 2016. Originally approved in 1972. Last previous edition approved in 20032009 as
F145 – 72 (2003).(2009). DOI: 10.1520/F0145-72R09.10.1520/F0145-72R16.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F145 − 72 (2016)
FIG. 1 Equipment for Performing the Solder-Plug Test of Gasket Compressions
5.6 Solder Plugs—The solder must be made into a flat strip. This can be done by compressing wire in a vise, a pair of flanges,
pliers, or passing it between two calender rolls. The solder plugs are punched from the strip by means of the leather punch.
Recommended plug diameter is 0.8 mm ( ⁄32 in.) and the height need only be such that the plug is compressed by the flanges when
the gasket is also compressed. The initial thickness of the plug and gasket before compression need not be equal.
6. Test Specimens
6.1 Three gasket specimens shall be tested. The size and shape of the specimens must be such as to fit the particular flange
design.
7. Conditioning
7.1 When the test is performed on an assembly line or in a service environment, sufficient time should elapse for the flanges,
bolts, and gasket to reach equilibrium with the ambient temperature and humidity conditions before assembly. (Heavy cas
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.