ASTM F519-05

Standard Test Method for Mechanical Hydrogen Embrittlement Evaluation of Plating Processes and Service Environments

SCOPE
1.1 This test method covers mechanical tests for the evaluation of hydrogen embrittlement from plating/coating processes or subsequent service environments (including cleaning treatments, maintenance chemicals or gaseous environments), or both, that may contact the surface of steels.
1.2 This test method is intended to be used as a process control for hydrogen produced by plating/coating processes and exposure to chemicals encountered in a service environment. It is not intended to measure the relative susceptibility of different steels. The relative susceptibility of different materials to hydrogen embrittlement may be determined in accordance with Test Method F 1459.
1.3 This test method assumes that air melted AISI E4340 steel per MIL-S-5000 at 51 to 53 Rockwell C Hardness Scale (HRC) is the worst case; that is, all other heat-treated, high-hardness steels are less susceptible to hydrogen embrittlement. The sensitivity to hydrogen embrittlement shall be demonstrated for each heat of steel used in the manufacture of test specimens.
1.4 Test procedures and acceptance requirements are specified for seven specimens of different sizes, geometries, and loading configurations. For plating/coating processes, specimens must meet or exceed 200 hours at a sustained load of 75 % of the notched fracture strength (NFS) (92 % of the ultimate strength for the Type 2a O-Ring specimen) or exceed a threshold of 75 % of the NFS for a quantitative, accelerated (24 hours) incremental step-load (ISL) test. For service environments, loading conditions, and pass/fail requirements for each specimen are specified in .
1.5 This test method is divided into two parts. The first part gives general information concerning requirements for hydrogen embrittlement testing. The second is composed of annexes that give specific requirements for the seven specimens covered by this test method and the details for testing service environments.
1.5.1 details circumferentially-notched tensile specimens. details self-loading notched specimens including; round tensile, round bend and C Ring specimens. details a notched, four-point bend specimen that combines sustained load and slow strain rate testing, using incremental loads and hold times under displacement control to measure a threshold stress in an accelerated manner. The test in measures the threshold for hydrogen stress cracking that is used to quantify the amount of residual hydrogen in the specimen. details a smooth O-Ring specimen under displacement control. details testing in service environments.
1.6 Specific requirements for the two types of specimens and the seven specific loading and geometrical configurations are as listed:
1.6.1 Type 1-Notched SpecimensType 1a: Notched, Round, TensionType 1a.1-Standard SizeType 1a.2-OversizedType 1b: Notched, Round, Tension-Self Loading FixtureType 1c: Notched, Round, Bend-Self Loading FixtureType 1d: Notched, C-Ring, Bend-Self Loading FixtureType 1e: Notched, Square, Bend-Displacement Control
1.6.2 Type 2-Smooth SpecimensType 2a: O-Ring, Bend-Self Loading Fixture
1.7 The values stated in the foot-pound-second (fps) system in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
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: 31-Mar-2005
• ICS: 25.220.40 - Metallic coatings
• Technical Committee: F07 - Aerospace and Aircraft
• Drafting Committee: F07.04 - Hydrogen Embrittlement

Relations

• Replaces: ASTM F519-97e2 - Standard Test Method for Mechanical Hydrogen Embrittlement Evaluation of Plating Processes and Service Environments
• Effective Date: 01-Apr-2005
• Replaced By: ASTM F519-06 - Standard Test Method for Mechanical Hydrogen Embrittlement Evaluation of Plating/Coating Processes and Service Environments
• Effective Date: 01-Jul-2006
• Referred By: ASTM B994/B994M-22 - Standard Specification for Nickel-Cobalt Alloy Coating
• Effective Date: 01-Apr-2005
• Referred By: ASTM B607-21 - Standard Specification for Autocatalytic Nickel Boron Coatings for Engineering Use
• Effective Date: 01-Apr-2005
• Referred By: ASTM F1941/F1941M-16 - Standard Specification for Electrodeposited Coatings on Mechanical Fasteners, Inch and Metric
• Effective Date: 01-Apr-2005
• Referred By: ASTM F3043-15 - Standard Specification for “Twist Off” Type Tension Control Structural Bolt/Nut/Washer Assemblies, Alloy Steel, Heat Treated, 200 ksi Minimum Tensile Strength
• Effective Date: 01-Apr-2005
• Referred By: ASTM B689-97(2023) - Standard Specification for Electroplated Engineering Nickel Coatings
• Effective Date: 01-Apr-2005
• Referred By: ASTM F1940-07a(2019) - Standard Test Method for Process Control Verification to Prevent Hydrogen Embrittlement in Plated or Coated Fasteners
• Effective Date: 01-Apr-2005
• Referred By: ASTM B733-22 - Standard Specification for Autocatalytic (Electroless) Nickel-Phosphorus Coatings on Metal
• Effective Date: 01-Apr-2005
• Referred By: ASTM B766-23 - Standard Specification for Electrodeposited Coatings of Cadmium
• Effective Date: 01-Apr-2005
• Referred By: ASTM F2660-20 - Standard Test Method for Qualifying Coatings for Use on F3125 Grade A490 Structural Bolts Relative to Environmental Hydrogen Embrittlement
• Effective Date: 01-Apr-2005
• Referred By: ASTM F1113-87(2017) - Standard Test Method for Electrochemical Measurement of Diffusible Hydrogen in Steels (Barnacle Electrode)
• Effective Date: 01-Apr-2005
• Referred By: ASTM F1624-12(2018) - Standard Test Method for Measurement of Hydrogen Embrittlement Threshold in Steel by the Incremental Step Loading Technique
• Effective Date: 01-Apr-2005
• Referred By: ASTM B177/B177M-11(2021) - Standard Guide for Engineering Chromium Electroplating
• Effective Date: 01-Apr-2005
• Referred By: ASTM D6361/D6361M-98(2020) - Standard Guide for Selecting Cleaning Agents and Processes
• Effective Date: 01-Apr-2005

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 519 – 05
Standard Test Method for
Mechanical Hydrogen Embrittlement Evaluation of Plating/
1
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.
1. Scope that give specific requirements for the seven specimens cov-
ered by this test method and the details for testing service
1.1 This test method covers mechanical tests for the evalu-
environments.
ation of hydrogen embrittlement from plating/coating pro-
1.5.1 Annex A1 details circumferentially-notched tensile
cesses or subsequent service environments (including cleaning
specimens. Annex A2 details self-loading notched specimens
treatments, maintenance chemicals or gaseous environments),
including; round tensile, round bend and C Ring specimens.
or both, that may contact the surface of steels.
Annex A3 details a notched, four-point bend specimen that
1.2 This test method is intended to be used as a process
combines sustained load and slow strain rate testing, using
control for hydrogen produced by plating/coating processes
incrementalloadsandholdtimesunderdisplacementcontrolto
and exposure to chemicals encountered in a service environ-
measureathresholdstressinanacceleratedmanner.Thetestin
ment. It is not intended to measure the relative susceptibility of
AnnexA3 measures the threshold for hydrogen stress cracking
differentsteels.Therelativesusceptibilityofdifferentmaterials
that is used to quantify the amount of residual hydrogen in the
to hydrogen embrittlement may be determined in accordance
specimen. Annex A4 details a smooth O-Ring specimen under
with Test Method F 1459.
displacement control. Annex A5 details testing in service
1.3 This test method assumes that air melted AISI E4340
environments.
steel per MIL-S-5000 at 51 to 53 Rockwell C Hardness Scale
1.6 Specific requirements for the two types of specimens
(HRC) is the worst case; that is, all other heat-treated,
and the seven specific loading and geometrical configurations
high-hardness steels are less susceptible to hydrogen embrittle-
are as listed:
ment. The sensitivity to hydrogen embrittlement shall be
1.6.1 Type 1—Notched Specimens
demonstrated for each heat of steel used in the manufacture of
Type 1a: Notched, Round, Tension
test specimens.
Type 1a.1—Standard Size Annex A1
1.4 Test procedures and acceptance requirements are speci-
Type 1a.2—Oversized Annex A1
fied for seven specimens of different sizes, geometries, and
Type 1b: Notched, Round, Tension—Self Loading Fixture Annex A2
Type 1c: Notched, Round, Bend—Self Loading Fixture Annex A2
loading configurations. For plating/coating processes, speci-
Type 1d: Notched, C-Ring, Bend—Self Loading Fixture Annex A2
mens must meet or exceed 200 hours at a sustained load of
Type 1e: Notched, Square, Bend—Displacement Control Annex A3
75 % of the notched fracture strength (NFS) (92 % of the
1.6.2 Type 2—Smooth Specimens
ultimate strength for the Type 2a O-Ring specimen) or exceed
Type 2a: O-Ring, Bend—Self Loading Fixture Annex A4
a threshold of 75 % of the NFS for a quantitative, accelerated
(#24 hours) incremental step-load (ISL) test. For service
1.7 The values stated in the foot-pound-second (fps) system
environments, loading conditions, and pass/fail requirements
in inch-pound units are to be regarded as standard. The values
for each specimen are specified in Annex A5.
given in parentheses are mathematical conversions to SI units
1.5 This test method is divided into two parts. The first part
that are provided for information only and are not considered
gives general information concerning requirements for hydro-
standard.
gen embrittlement testing. The second is composed of annexes
1.8 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 appro-
1
This test method is under the jurisdiction of ASTM Committee F07 on
priate safety and health practices and determine the applica-
Aerospace and Aircraft and is the direct responsibility of Subcommittee F07.04 on
bility of regulatory limitations prior to use.
Hydrogen Embrittlement.
Current edition approved April 1, 2005. Published April 2005. Originally
e2
approved in 1977. Last previous edition approved in 1997 as F 519 – 97 .
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F519–05
2. Referenced Documents ID = inside diameter
2
ISL = incremental s
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