ASTM F519-06e2

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e2
Designation: F 519 – 06
Standard Test Method for
Mechanical Hydrogen Embrittlement Evaluation of Plating/
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Coating Processes and Service Environments
This standard is issued under the fixed designation F 519; 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.
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e NOTE—Some of the figures were reduced in size in March 2007.
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e NOTE—Figure layout was improved in the Annexes in August 2007.
1. Scope 1.5 Pass/Fail Requirements—For plating/coating processes,
specimens must meet or exceed 200 h using a sustained load
1.1 This test method describes mechanical test methods and
test (SLT) at the levels shown in Table 3.
defines acceptance criteria for coating and plating processes
1.5.1 The loading conditions and pass/fail requirements for
that can cause hydrogen embrittlement in steels. Subsequent
service environments are specified in Annex A5.
exposure to chemicals encountered in service environments,
1.5.2 If approved by the cognizant engineering authority, a
such as fluids, cleaning treatments or maintenance chemicals
quantitative, accelerated (# 24 h) incremental step-load (ISL)
that come in contact with the plated/coated or bare surface of
test as defined in Annex A3 may be used as an alternative to
the steel, can also be evaluated.
SLT.
1.2 This test method is not intended to measure the relative
1.6 This test method is divided into two parts. The first part
susceptibility of different steels. The relative susceptibility of
gives general information concerning requirements for hydro-
different materials to hydrogen embrittlement may be deter-
gen embrittlement testing. The second is composed of annexes
mined in accordance with Test Method F 1459 and Test
that give specific requirements for the various loading and
Method F 1624.
specimen configurations covered by this test method (see
1.3 This test method specifies the use of air melted AISI
section 9.1 for a list of types) and the details for testing service
E4340 steel per SAE AMS-S-5000 (formerly MIL-S-5000)
environments.
heat treated to 260 – 280 ksi (pounds per square inch x 1000)
1.7 The values stated in the foot-pound-second (fps) system
as the baseline. This combination of alloy and heat treat level
in inch-pound units are to be regarded as standard. The values
has been used for many years and a large database has been
given in parentheses are mathematical conversions to SI units
accumulated in the aerospace industry on its specific response
that are provided for information only and are not considered
to exposure to a wide variety of maintenance chemicals, or
standard.
electroplated coatings, or both. Components with ultimate
1.8 This standard does not purport to address all of the
strengths higher than 260 – 280 ksi may not be represented by
safety concerns, if any, associated with its use. It is the
the baseline. In such cases, the cognizant engineering authority
responsibility of the user of this standard to establish appro-
shalldeterminetheneedformanufacturingspecimensfromthe
priate safety and health practices and determine the applica-
specific material and heat treat condition of the component.
bility of regulatory limitations prior to use.
Deviations from the baseline shall be reported as required by
section 12.1.2. The sensitivity to hydrogen embrittlement shall
2. Referenced Documents
be demonstrated for each lot of specimens as specified in
2
2.1 ASTM Standards:
section 9.5.
B 374 Terminology Relating to Electroplating
1.4 Test procedures and acceptance requirements are speci-
B 851 SpecificationforAutomatedControlledShotPeening
fied for seven specimens of different sizes, geometries, and
of Metallic Articles Prior to Nickel, Autocatalytic Nickel,
loading configurations.
or Chromium Plating, or as Final Finish
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This test method is under the jurisdiction of ASTM Committee F07 on
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Aerospace and Aircraft and is the direct responsibility of Subcommittee F07.04 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Hydrogen Embrittlement. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved July 1, 2006. Published September 2006. Originally Standards volume information, refer to the standard’s Document Summary page on
approved in 1977. Last previous edition approved in 2005 as F 519 – 05. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F519–06
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