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ASTM E1418-10

(Practice)

Standard Practice for Visible Penetrant Testing Using the Water-Washable Process

Standard Practice for Visible Penetrant Testing Using the Water-Washable Process

SIGNIFICANCE AND USE
Liquid penetrant examination methods indicate the presence, location, and, to a limited extent, the nature and magnitude of the detected discontinuities. This practice is normally used for production examination of large volumes of parts or structures, where emphasis is on productivity. This practice offers a wide latitude in applicability when extensive and controlled conditions are available.
SCOPE
1.1 This practice describes procedures for visible liquid penetrant examination utilizing the water-washable process. It is a nondestructive practice for detecting discontinuities that are open to the surface such as cracks, seams, laps, cold shuts, laminations, isolated porosity, through leaks or lack of fusion and is applicable to in-process, final, and maintenance examination. This practice can be effectively used in the examination of nonporous, metallic materials, both ferrous and nonferrous, and of nonmetallic materials such as glazed or fully densified ceramics, and certain nonporous plastics, and glass.
1.2 This practice also provides the following references:
1.2.1 A reference by which visible penetrant examination procedures using the water-washable process can be reviewed to ascertain their applicability and completeness.
1.2.2 For use in the preparation of process specifications dealing with the visible, water-washable liquid penetrant examination of materials and parts. Agreement between the user and the supplier regarding specific techniques is strongly recommended.
1.2.3 For use in the organization of the facilities and personnel concerned with the liquid penetrant examination.
1.3 This practice does not indicate or suggest criteria for evaluation of the indications obtained. It should be noted, however, that after indications have been produced, they must be interpreted or classified and then evaluated. For this purpose there must be a separate code, specification, or a specific agreement to define the type, size, location, and orientation of indications considered acceptable, and those considered unacceptable.
1.4 The values stated in inch-pound units are regarded as standard. SI units given in parentheses are for information only.
1.5 Basis of Application—There are areas in this practice that may require agreement between the cognizant engineering organization and the supplier, or specific direction from the cognizant engineering organization. These areas are identified as follows:
1.5.1 Penetrant type, method and sensitivity,
1.5.2 Accept/reject criteria,
1.5.3 Personnel qualification requirements,
1.5.4 Grit blasting,
1.5.5 Etching,
1.5.6 Indication/discontinuity sizing,
1.5.7 Total processing time, and
1.5.8 Marking of parts.
1.6 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
14-Feb-2010
ICS
19.040 - Environmental testing
Technical Committee
E07 - Nondestructive Testing
Drafting Committee
E07.03 - Liquid Penetrant and Magnetic Particle Methods
Current Stage
Ref Project

Relations

Replaces
ASTM E1418-05 - Standard Test Method for Visible Penetrant Examination Using the Water-Washable Process
Effective Date
15-Feb-2010
Referred By
ASTM E543-21 - Standard Specification for Agencies Performing Nondestructive Testing
Effective Date
15-Feb-2010
Referred By
ASTM E165/E165M-23 - Standard Practice for Liquid Penetrant Testing for General Industry
Effective Date
15-Feb-2010
Referred By
ASTM E2297-23 - Standard Guide for Use of UV-A and Visible Light Sources and Meters used in the Liquid Penetrant and Magnetic Particle Methods
Effective Date
15-Feb-2010

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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: E1418 − 10
StandardPractice for
Visible Penetrant Testing Using the Water-Washable
1
Process
This standard is issued under the fixed designation E1418; 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 organization and the supplier, or specific direction from the
cognizant engineering organization. These areas are identified
1.1 This practice describes procedures for visible liquid
as follows:
penetrant examination utilizing the water-washable process. It
1.5.1 Penetrant type, method and sensitivity,
is a nondestructive practice for detecting discontinuities that
1.5.2 Accept/reject criteria,
are open to the surface such as cracks, seams, laps, cold shuts,
1.5.3 Personnel qualification requirements,
laminations, isolated porosity, through leaks or lack of fusion
1.5.4 Grit blasting,
and is applicable to in-process, final, and maintenance exami-
1.5.5 Etching,
nation.This practice can be effectively used in the examination
1.5.6 Indication/discontinuity sizing,
of nonporous, metallic materials, both ferrous and nonferrous,
1.5.7 Total processing time, and
and of nonmetallic materials such as glazed or fully densified
1.5.8 Marking of parts.
ceramics, and certain nonporous plastics, and glass.
1.6 This standard does not purport to address all of the
1.2 This practice also provides the following references:
safety concerns, if any, associated with its use. It is the
1.2.1 A reference by which visible penetrant examination
responsibility of the user of this standard to establish appro-
procedures using the water-washable process can be reviewed
priate safety and health practices and determine the applica-
to ascertain their applicability and completeness.
bility of regulatory limitations prior to use.
1.2.2 For use in the preparation of process specifications
dealing with the visible, water-washable liquid penetrant ex-
2. Referenced Documents
amination of materials and parts. Agreement between the user
2
2.1 ASTM Standards:
and the supplier regarding specific techniques is strongly
D129 Test Method for Sulfur in Petroleum Products (Gen-
recommended.
eral High Pressure Decomposition Device Method)
1.2.3 For use in the organization of the facilities and
D516 Test Method for Sulfate Ion in Water
personnel concerned with the liquid penetrant examination.
D808 Test Method for Chlorine in New and Used Petroleum
1.3 This practice does not indicate or suggest criteria for
Products (High Pressure Decomposition Device Method)
evaluation of the indications obtained. It should be noted,
D1552 Test Method for Sulfur in Petroleum Products (High-
however, that after indications have been produced, they must
Temperature Method)
beinterpretedorclassifiedandthenevaluated.Forthispurpose
E165 Practice for Liquid Penetrant Examination for General
there must be a separate code, specification, or a specific
Industry
agreement to define the type, size, location, and orientation of
E433 Reference Photographs for Liquid Penetrant Inspec-
indications considered acceptable, and those considered unac-
tion
ceptable.
E543 Specification forAgencies Performing Nondestructive
1.4 The values stated in inch-pound units are regarded as Testing
E1316 Terminology for Nondestructive Examinations
standard.SIunitsgiveninparenthesesareforinformationonly.
2.2 ASNT Standards:
1.5 Basis of Application—There are areas in this practice
Recommended Practice SNT-TC-1A for Nondestructive
that may require agreement between the cognizant engineering
3
Testing Personnel Qualification and Certification
1 2
This practice is under the jurisdiction of ASTM Committee E07 on Nonde- For referenced ASTM standards, visit the ASTM website, www.astm.org, or
structive Testing and is the direct responsibility of Subcommittee E07.03 on Liquid contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Penetrant and Magnetic Particle Methods. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Feb. 15, 2010. Published March 2010. Originally the ASTM website.
3
approved in 1991. Last previous edition approved in 2005 as E1418 - 05. DOI: Available fromTheAmerican Society for NondestructiveTesting (ASNT), P.O.
10.1520/E1418-10. Box 28518, 1711 Arlingate Lane, Columbus, OH 43228-0518.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E1418 − 10
ANSI/ASNT-CP-189 Standard for Qualification and Certifi- magnitude of the detected discontinuities. This practice is
3
cation of NDT Per
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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:E1418–05
Standard Test Method for Visible Penetrant Examination
Using the Water-Washable ProcessDesignation:E1418–10
Standard Practice for
Visible Penetrant Testing Using the Water-Washable
1
Process
This standard is issued under the fixed designation E1418; 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 Thistestmethodpracticedescribesproceduresforvisibleliquidpenetrantexaminationutilizingthewater-washableprocess.
It is a nondestructive test method practice for detecting discontinuities that are open to the surface such as cracks, seams, laps, cold
shuts, laminations, isolated porosity, through leaks or lack of fusion and is applicable to in-process, final, and maintenance
examination. This test method practice can be effectively used in the examination of nonporous, metallic materials, both ferrous
and nonferrous, and of nonmetallic materials such as glazed or fully densified ceramics, and certain nonporous plastics, and glass.
1.2 This test methodpractice also provides the following references:
1.2.1 A reference by which visible penetrant examination procedures using the water-washable process can be reviewed to
ascertain their applicability and completeness.
1.2.2 For use in the preparation of process specifications dealing with the visible, water-washable liquid penetrant examination
of materials and parts. Agreement between the user and the supplier regarding specific techniques is strongly recommended.
1.2.3 For use in the organization of the facilities and personnel concerned with the liquid penetrant examination.
1.3 This test method practice does not indicate or suggest criteria for evaluation of the indications obtained. It should be noted,
however,thatafterindicationshavebeenproduced,theymustbeinterpretedorclassifiedandthenevaluated.Forthispurposethere
must be a separate code, specification, or a specific agreement to define the type, size, location, and orientation of indications
considered acceptable, and those considered unacceptable.
1.4 The values stated in inch-pound units are to be regarded as the standard. The SI units given in bracketsparentheses are
provided for information only.
1.5 Basis of Application—There are areas in this test methodpractice that may require agreement between the cognizant
engineering organization and the supplier, or specific direction from the cognizant engineering organization. These areas are
identified as follows:
1.5.1 Penetrant type, method and sensitivity,
1.5.2 Accept/reject criteria,
1.5.3 Personnel qualification requirements,
1.5.4 Grit blasting,
1.5.5 Etching,
1.5.6 Indication/discontinuity sizing,
1.5.7 Total processing time, and
1.5.8 Marking of parts.
1.6 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.
1
This test method practice is under the jurisdiction ofASTM Committee E07 on NondestructiveTesting and is the direct responsibility of Subcommittee E07.03 on Liquid
Penetrant and Magnetic Particle Methods.
Current edition approved January 1, 2005. Published January 2005. Originally approved in 1991. Last previous edition approved in 2004 as E1418-04. DOI:
10.1520/E1418-05.
Current edition approved Feb. 15, 2010. Published March 2010. Originally approved in 1991. Last previous edition approved in 2005 as E1418 - 05. DOI:
10.1520/E1418-10.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
E1418–10
2. Referenced Documents
2
2.1 ASTM Standards:
D129 Test Method for Sulfur in Petroleum Products (General Bomb Method)
D516 Test Method for Sulfate Ion in Water
D808 Test Method for Chlorine in New and Used Petroleum Products (Bomb Method)
D1552 Test Method for Sulfur in Petroleum Products (High-Temperature Method)
E165 Practice for Liquid Penetrant Examination for General Industry
E433 Reference Photographs for Liquid Penetrant Inspection
E543 Specification for Agencies Performing Nondestructive Testing
E1316 Terminology for Nondestructive Examinations
2.2 ASNT Standards:
3
Recommended Practice SNT-TC-1A for No
...

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ASTM E1417/E1417M-21e1(Practice)
Standard Practice for Liquid Penetrant Testing

SIGNIFICANCE AND USE
4.1 This practice establishes the basic parameters for controlling the application of the liquid penetrant method. This practice is written so it can be specified on the engineering drawing, specification, or contract. It is not a detailed how-to procedure to be used by the inspector and, therefore, must be supplemented by a detailed procedure that conforms to the requirements of this practice. Practice E165/E165M contains information to help develop detailed requirements.
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1.1 This practice establishes the minimum requirements for conducting liquid penetrant examination of nonporous metal and nonmetal components.
Note 1: This practice replaces MIL-STD-6866.  
1.2 The penetrant examination processes described in this practice are applicable to in-process, final, and maintenance (in-service) examinations. These processes are applicable for the detection of discontinuities, such as lack of fusion, corrosion, cracks, laps, cold shuts, and porosity, that are open or connected to the surface of the component under examination.  
1.3 Caution must be exercised in the usage of elevated temperature with components manufactured from thermoplastic materials. Also, some cleaners, penetrants, and developers can have a deleterious effect on nonmetallic materials such as plastics. Prior to examination, tests should be conducted to ensure that none of the cleaning or examination materials are harmful to the components to be examined.  
1.4 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.5 All areas of this practice may be open to agreement between the cognizant engineering organization and the supplier, or specific direction from the cognizant engineering organization.  
Note 2: Throughout this document, the term blacklight has been changed to UV-A to conform with the latest terminology in Terminology E1316. Blacklight can mean a broad range of ultraviolet radiation; fluorescent penetrant examination only uses the UV-A range.  
1.6 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.  
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SIGNIFICANCE AND USE
5.1 Liquid penetrant examination methods indicate the presence, location, and, to a limited extent, the nature and magnitude of the detected discontinuities. This practice is normally used for production examination of large volumes of parts or structures, where emphasis is on productivity. This practice offers a wide latitude in applicability when extensive and controlled conditions are available.
SCOPE
1.1 This practice describes procedures for visible liquid penetrant examination utilizing the water-washable process. It is a nondestructive practice for detecting discontinuities that are open to the surface such as cracks, seams, laps, cold shuts, laminations, isolated porosity, through leaks or lack of fusion and is applicable to in-process, final, and maintenance examination. This practice can be effectively used in the examination of nonporous, metallic materials, both ferrous and nonferrous, and of nonmetallic materials such as glazed or fully densified ceramics, and certain nonporous plastics, and glass.  
1.2 This practice also provides the following references:  
1.2.1 A reference by which visible penetrant examination procedures using the water-washable process can be reviewed to ascertain their applicability and completeness.  
1.2.2 For use in the preparation of process specifications dealing with the visible, water-washable liquid penetrant examination of materials and parts. Agreement between the user and the supplier regarding specific techniques is strongly recommended.  
1.2.3 For use in the organization of the facilities and personnel concerned with the liquid penetrant examination.  
1.3 This practice does not indicate or suggest criteria for evaluation of the indications obtained. It should be noted, however, that after indications have been produced, they must be interpreted or classified and then evaluated. For this purpose there must be a separate code, specification, or a specific agreement to define the type, size, location, and orientation of indications considered acceptable, and those considered unacceptable.  
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1.5 Basis of Application—There are areas in this practice that may require agreement between the cognizant engineering organization and the supplier, or specific direction from the cognizant engineering organization. These areas are identified as follows:  
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1.4 The linear Fresnel reflector accelerated outdoor exposure test apparatus described may be suitable for the determination of the relative durability of materials when these materials are exposed to concentrated sunlight, heat, and moisture.  
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1.7 For test machines currently in use, this practice is not recommended for specimens exceeding 13 mm (1/2 in.) in thickness because of specimen cooling.  
1.8 Values stated in SI units are to be regarded as the standard. The inch-pound units in parentheses are provided for information only.  
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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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 1: The American Society for Testing and Materials takes no position respecting the validity of any evaluation methods asserted in connection with any item mentioned in this guide. Users of this guide are expressly advised that determination of the validity of any such evaluation methods and data and the risk of use of such evaluation methods and data are entirely their own responsibility.
Note 2: In evaluating materials, any mixture with oxygen exceeding atmospheric concentration at pressures higher than atmospheric should be evaluated from the hazard point of view for possible significant increase in material combustibility.  
1.4 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.

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ASTM G128/G128M-15(2023)(Guide)
Standard Guide for Control of Hazards and Risks in Oxygen Enriched Systems

SIGNIFICANCE AND USE
4.1 The purpose of this guide is to introduce the hazards and risks associated with oxygen-enriched systems. This guide explains common hazards that often are overlooked. It provides an overview of the standards and documents produced by ASTM Committee G04 and other knowledgable sources as well as their uses. It does not highlight standard test methods that support the use of these practices. Table 1 provides a graphic representation of the relationship of ASTM G04 standards. Table 2 provides a list of standards published by ASTM and other organizations.  
4.2 The standards discussed here focus on reducing the hazards associated with the use of oxygen. In general, they are not directly applicable to process reactors in which the deliberate reaction of materials with oxygen is sought, as in burners, bleachers, or bubblers. Other ASTM Committees and products (such as the CHETAH program5) and other outside groups are more pertinent for these.  
4.3 This guide is not intended as a specification to establish practices for the safe use of oxygen. The documents discussed here do not purport to contain all the information needed to design and operate an oxygen-enriched system safely. The control of oxygen hazards has not been reduced to handbook procedures, and the tactics for using oxygen are not simple. Rather, they require the application of sound technical judgment and experience. Oxygen users should obtain assistance from qualified technical personnel to design systems and operating practices for the safe use of oxygen in their specific applications.
SCOPE
1.1 This guide covers an overview of the work of ASTM Committee G04 on Compatibility and Sensitivity of Materials in Oxygen-Enriched Atmospheres. It is a starting point for those asking the question: “What are the risks associated with my use of oxygen?” This guide is an introduction to the unique concerns that must be addressed in the handling of oxygen. The principal hazard is the prospect of ignition with resultant fire, explosion, or both. All fluid systems require design considerations, such as adequate strength, corrosion resistance, fatigue resistance, and pressure safety relief. In addition to these design considerations, one must also consider the ignition mechanisms that are specific to an oxygen-enriched system. This guide outlines these ignition mechanisms and the approach to reducing the risks.  
1.2 This guide also lists several of the recognized causes of oxygen system fires and describes the methods available to prevent them. Sources of information about the oxygen hazard and its control are listed and summarized. The principal focus is on Guides G63, G88, Practice G93, and Guide G94. Useful documentation from other resources and literature is also cited.  
Note 1: This guide is an outgrowth of an earlier (1988) Committee G04 videotape adjunct entitled Oxygen Safety and a related paper by Koch2 that focused on the recognized ignition source of adiabatic compression as one of the more significant but often overlooked causes of oxygen fires. This guide recapitulates and updates material in the videotape and paper.  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
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. For specific precautionary statements see Sections 8 and 11.  
Note 2: ASTM takes no position respecting the validity of any evaluation methods asserted in connection with any ite...

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ASTM G154-23(Practice)
Standard Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Materials

SIGNIFICANCE AND USE
5.1 The use of this apparatus is intended to induce property changes consistent with the end use conditions, including the effects of the UV portion of sunlight, moisture, and heat. Typically, these exposures would include moisture in the form of condensing humidity. Exposures are not intended to simulate the deterioration caused by localized weather phenomena, such as atmospheric pollution, biological attack, and saltwater exposure. Alternatively, the exposure may simulate the effects of sunlight through window glass. (Warning—Refer to Practice G151 for full cautionary guidance applicable to all laboratory weathering devices.)  
5.2 This practice provides general procedures for operating fluorescent UV lamp weathering devices that allow for a wide range of exposure conditions. Therefore, no reference shall be made to results from the use of this practice unless accompanied by a report detailing the specific operating conditions in conformance with Section 10.  
5.2.1 It is recommended that a similar material of known performance (a control) be exposed simultaneously with the test specimen to provide a standard for comparative purposes. Generally, two controls are recommended: one known to have poor durability and one known to have good durability. It is recommended that at least three replicates of each material evaluated be exposed in each test to allow for statistical evaluation of results.  
5.2.2 Comparison of results obtained from specimens exposed in the same model of apparatus should not be made unless reproducibility has been established among devices for the material to be tested.  
5.2.3 Comparison of results obtained from specimens exposed in different models of apparatus should not be made unless correlation has been established among devices for the material to be tested (see Guide D6631 for guidance).
SCOPE
1.1 This practice is limited to the basic principles for operating a fluorescent UV lamp and water apparatus; on its own, it does not deliver a specific result.  
1.2 It is intended to be used in conjunction with a practice or method that defines specific exposure conditions for an application along with a means to evaluate changes in material properties. This practice is intended to reproduce the weathering effects that occur when materials are exposed to sunlight (either direct or through window glass) and moisture as rain or dew in actual usage. This practice is limited to the procedures for obtaining, measuring, and controlling conditions of exposure.
Note 1: Practice G151 describes general procedures to be used when exposing nonmetallic materials in accelerated test devices that use laboratory light sources.
Note 2: A number of exposure procedures are listed in an appendix; however, this practice does not specify the exposure conditions best suited for the material to be tested.  
1.3 Test specimens are exposed to fluorescent UV light under controlled environmental conditions. Different types of fluorescent UV lamp sources are described.
Note 3: In this standard, the terms UV light and UV radiation are used interchangeably.  
1.4 Specimen preparation and evaluation of the results are covered in ASTM methods or specifications for specific materials. General guidance is given in Practice G151 and ISO 4892-1.
Note 4: General information about methods for determining the change in properties after exposure and reporting these results is described in ISO 4582 and Practice D5870.  
1.5 This practice is not intended for corrosion testing of bare metals.  
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.7 This standard is technically similar to ISO 4892-3 and ISO 16474-3.  
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 appropriate safety, health, and...

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ASTM F2111-22(Practice)
Standard Practice for Measuring Intergranular Attack or End Grain Pitting on Metals Caused by Aircraft Chemical Processes

SIGNIFICANCE AND USE
4.1 If not properly qualified, chemicals and chemical processes can attack metals used during aircraft maintenance and production. It is important to qualify only processes and chemical formulas that do not have any deleterious effects on aircraft metallic skins, fittings, components, and structures. This test procedure is used to detect and measure intergranular attack or pitting depth caused by aircraft maintenance chemical processes, hence, this test procedure is useful in selecting a process that will not cause intergranular attack or end grain pitting on aircraft alloys.  
4.2 The purpose of this practice is to aid in the qualification or process conformance testing or production of maintenance chemicals for use on aircraft.  
4.2.1 Actual aircraft processes in the production environment shall give the most representative results; however, the test results cannot be completely evaluated with respect to ambient conditions which normally vary from day to day. Additionally, when testing chemicals requiring dilutions, water quality and composition can play a role in the corrosion rates and mechanism affecting the results.  
4.2.2 Some examples of maintenance and production chemicals include: organic solvents, paint strippers, cleaners, deoxidizers, water-based or semi-aqueous cleaners, or etching solutions and chemical milling solutions.
SCOPE
1.1 This practice covers the procedures for testing and measuring intergranular attack (IGA) and end grain pitting on aircraft metals and alloys caused by maintenance or production chemicals.  
1.2 The standard does not purport to address all qualification testing parameters, methods, critical testing, or criteria for aircraft production or maintenance chemical qualifications. Specific requirements and acceptance testing along with associated acceptance criteria shall be found where applicable in procurement specifications, materials specifications, appropriate process specifications, or previously agreed upon specifications.  
1.3 Units—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.

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