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ASTM-F519:2006 Edition

ASTM-F519:2006 Edition

$44.96

F519-06 Standard Test Method for Mechanical Hydrogen Embrittlement Evaluation of Plating/Coating Processes and Service Environments

Published By Publication Date Number of Pages
ASTM 2006 19
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1.1 This test method describes mechanical test methods and defines acceptance criteria for coating and plating processes that can cause hydrogen embrittlement in steels. Subsequent exposure to chemicals encountered in service environments, such as fluids, cleaning treatments or maintenance chemicals that come in contact with the plated/coated or bare surface of the steel, can also be evaluated.

1.2 This test method 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 and Test Method F 1624.

1.3 This test method specifies the use of air melted AISI E4340 steel per SAE AMS-S-5000 (formerly MIL-S-5000) heat treated to 260 – 280 ksi (pounds per square inch x 1000) as the baseline. This combination of alloy and heat treat level has been used for many years and a large database has been accumulated in the aerospace industry on its specific response to exposure to a wide variety of maintenance chemicals, or electroplated coatings, or both. Components with ultimate strengths higher than 260 – 280 ksi may not be represented by the baseline. In such cases, the cognizant engineering authority shall determine the need for manufacturing specimens from the specific material and heat treat condition of the component. Deviations from the baseline shall be reported as required by section . The sensitivity to hydrogen embrittlement shall be demonstrated for each lot of specimens as specified in section .

1.4 Test procedures and acceptance requirements are specified for seven specimens of different sizes, geometries, and loading configurations.

1.5 Pass/Fail RequirementsFor plating/coating processes, specimens must meet or exceed 200 h using a sustained load test (SLT) at the levels shown in .

1.5.1 The loading conditions and pass/fail requirements for service environments are specified in .

1.5.2 If approved by the cognizant engineering authority, a quantitative, accelerated ( 24 h) incremental step-load (ISL) test as defined in may be used as an alternative to SLT.

1.6 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 various loading and specimen configurations covered by this test method (see section for a list of types) and the details for testing service environments.

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.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
2 Terminology
Summary of Test Methods
Significance and Use
Apparatus
Materials and Reagents
3 Hazards
Test Specimens
4 Procedure
Interpretation of Results
TABLE 1
5 Report
Precision and Bias
Keywords
TABLE 2
TABLE 3
6 A1. SPECIAL REQUIREMENTS FOR THE TESTING OF NOTCHED ROUND TENSION SPECIMENS
A1.1 Type 1a
FIG. A1.1
7 A2. SPECIAL REQUIREMENTS FOR THE TESTING OF NOTCHED SPECIMENS IN SELF-LOADING FIXTURE
A2.1 Type 1b—Notched Tension Specimen
FIG. A1.2
8 A2.2 Type 1c—Notched Round Bend Specimen
A2.3 Type 1d—Notched C-Ring Bend
FIG. A2.1
9 FIG. A2.2
10 FIG. A2.3
FIG. A2.4
11 FIG. A2.5
12 FIG. A2.6
13 FIG. A2.7
14 FIG. A2.8
15 A3. SPECIAL REQUIREMENTS FOR THE TESTING OF SPECIMENS WITH THE ISL TEST METHOD
A3.1 Specimens
A3.2 Manufacture
A3.3 Loading Protocol
A3.4 Threshold
A3.5 Equivalence Between SLT and ISL
FIG. A2.9
16 A3.6 Interpretation of Results
A3.7 Tolerance of Parts
FIG. A3.1
17 A4. SPECIAL REQUIREMENTS FOR THE TESTING OF SMOOTH O-RING SPECIMENS WITH CONSTANT DISPLACEMENT STRESS BARS
A4.1 Specimen
A4.2 Manufacture
A4.3
FIG. A4.1
18 A5. DETAILS OF TESTING IN SERVICE ENVIRONMENTS
A5.1 Service Environments
A5.2 Classification of Chemicals
A5.3 Service Chemical Testing Procedure
FIG. A4.2
TABLE A4.1
19 A5.4 Test Conditions
A5.5 Loading Protocol
A5.6 Interpretation of Results
TABLE A5.1

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