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ASTM E1648-95(2006)

(Specification)

Standard Reference Radiographs for Examination of Aluminum Fusion Welds

Standard Reference Radiographs for Examination of Aluminum Fusion Welds

SCOPE
1.1 These reference radiographs illustrate various types and severity levels of discontinuities in aluminum fusion welds that may be revealed by radiographic examination. These reference radiographs do not specify the acceptable level of these discontinuities, rather they provide a visual reference for communicating the acceptable level. Note 1The reference radiographs consist of a set of eight plates (81 /2 by 11 in. (22 by 28 cm)), covering base material up to and including 0.75 in. (19 mm) in thickness.
1.2 These reference radiographs are based on two nominal weld thicknesses in wrought aluminum products and are applicable to the thickness ranges shown in Table 1. The welds were produced using base material plates of 6061 and 5083 alloys and 5356 and 4043 gas metal-arc (GMA) electrodes. These reference radiographs are intended for use in evaluating radiographs of welds in wrought aluminum products. They are not recommended for use with repair welds in cast materials; however, they are appropriate for use with assembly or fabrication welds. Reference radiographs for aluminum and magnesium castings are available in Reference Radiographs E 155 and E 505.
1.3 The adjunct contains illustrations of representative graded and ungraded discontinuities. Table 2 lists the discontinuity types and severities illustrated for each thickness of base material. Each of the graded discontinuity types has five severity levels, 1 through 5, in order of increasing severity. The ungraded discontinuities are included for informational purposes.
1.4 The values stated in inch-pound units are to be regarded as the 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
30-Nov-2006
ICS
25.160.40 - Welded joints and welds
Technical Committee
E07 - Nondestructive Testing
Drafting Committee
E07.02 - Reference Radiological Images
Current Stage
Ref Project

Relations

Replaces
ASTM E1648-95(2001) - Standard Reference Radiographs for Examination of Aluminum Fusion Welds
Effective Date
01-Dec-2006
Replaced By
ASTM E1648-95(2011) - Standard Reference Radiographs for Examination of Aluminum Fusion Welds
Effective Date
01-Aug-2011

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ASTM E1648-95(2006) - Standard Reference Radiographs for Examination of Aluminum Fusion WeldsASTM E1648-95(2006) - Standard Reference Radiographs for Examination of Aluminum Fusion Welds
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ASTM E1648-95(2006) - Standard Reference Radiographs for Examination of Aluminum Fusion Welds
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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:E1648–95 (Reapproved 2006)
Standard Reference Radiographs for
Examination of Aluminum Fusion Welds
This standard is issued under the fixed designation E1648; 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 priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
1.1 These reference radiographs illustrate various types and
severity levels of discontinuities in aluminum fusion welds that
2. Referenced Documents
may be revealed by radiographic examination. These reference
2.1 ASTM Standards:
radiographs do not specify the acceptable level of these
E94 Guide for Radiographic Examination
discontinuities, rather they provide a visual reference for
E155 Reference Radiographs for Inspection of Aluminum
communicating the acceptable level.
and Magnesium Castings
NOTE 1—The reference radiographs consist of a set of eight plates (8 ⁄2
E505 Reference Radiographs for Inspection of Aluminum
by 11 in. (22 by 28 cm)), covering base material up to and including 0.75
and Magnesium Die Castings
in. (19 mm) in thickness.
E1032 Test Method for Radiographic Examination ofWeld-
1.2 These reference radiographs are based on two nominal
ments
weld thicknesses in wrought aluminum products and are
E1316 Terminology for Nondestructive Examinations
applicable to the thickness ranges shown in Table 1. The welds
2.2 ASTM Adjuncts:
were produced using base material plates of 6061 and 5083
Reference Radiographs for Aluminum Fusion Welds:
alloys and 5356 and 4043 gas metal-arc (GMA) electrodes.
Volume 1, Thicknesses Up to and Including 0.75 in.
These reference radiographs are intended for use in evaluating
(19 mm)
radiographs of welds in wrought aluminum products. They are
3. Terminology
not recommended for use with repair welds in cast materials;
however, they are appropriate for use with assembly or
3.1 Definitions—Definitions of terms relating to X-ray and
fabrication welds. Reference radiographs for aluminum and
gamma radiology, as used in these reference radiographs, may
magnesium castings are available in Reference Radiographs
be found in Terminology E1316.
E155 and E505.
4. Significance and Use
1.3 The adjunct contains illustrations of representative
graded and ungraded discontinuities. Table 2 lists the discon-
4.1 Use of these reference radiographs requires agreement
tinuity types and severities illustrated for each thickness of
between the using parties as to the acceptable level of each
base material. Each of the graded discontinuity types has five
discontinuity type. Illustrations are provided for welds in
severity levels, 1 through 5, in order of increasing severity.The
0.125-in. (3.2-mm) thick material and 0.50-in. (12.7-mm) thick
ungraded discontinuities are included for informational pur-
material. These illustrations are intended to be representative
poses.
of base material thicknesses up to 0.75 in. (19 mm). Use of
1.4 The values stated in inch-pound units are to be regarded
these reference radiographs is not intended to be restricted to
as the standard.
the specific energy level or the absolute thickness limits that
1.5 This standard does not purport to address all of the
are illustrated. These reference radiographs may be used,
safety concerns, if any, associated with its use. It is the
where there is no other applicable document, for other energy
responsibility of the user of this standard to establish appro-
levels or thicknesses, or both, for which agreement has been
reached between the purchaser and the manufacturer. Standard
These reference radiographs are under the jurisdiction of ASTM Committee
E07 on Nondestructive Testing and are the direct responsibility of Subcommittee For referenced ASTM standards, visit the ASTM website, www.astm.org, or
E07.02 on Reference Radiological Images. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved Dec. 1, 2006. Published January 2007. Originally Standards volume information, refer to the standard’s Document Summary page on
approved in 1995. Last previous edition approved in 2001 as E1648 - 95(2001). the ASTM website.
DOI: 10.1520/E1648-95R06. Available from ASTM Headquarters. Order RRE1648.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
E1648–95 (2006)
TABLE 1 Applicable Thickness Ranges
tungsten inclusions are lighter than the surrounding areas and
Illustration Thickness, may be rounded or irregularly shaped.
Base Material Thickness, in. (mm)
in. (mm)
6.3 Incomplete penetration, is a discontinuity that occurs at
0.125 (3.2) to and including 0.375 (9.5)
the root of welds where full penetration has not been achieved.
0.50 (12.7) over 0.375 (9.5) to and including 0.75 (19)
The discontinuity generally appears on a radiograph as a
straight dark line that may be either continuous or intermittent.
TABLE 2 Types of Discontinuities Illustrated for Each Thickness Theindicationistypicallyasharplydefinedlineortwoparallel
of Base Material
lines depending upon the specific geometry of the joint and the
Base Material Thickness, in. (mm) and width of the discontinuity (see Note 2).
Grading
Discontinuity Type
NOTE 2—Some welds may be designed for, or permit, incomplete
0.125 (3.2) 0.50 (12.7)
penetration of the weld. Appropriate drawings and specifications must be
Fine scattered porosity Grades 1 through 5 Grades 1 through 5
consulted to determine whether the indication represents an unacceptable
Coarse scattered porosity . Grades 1 through 5
condition. Where the condition exceeds specification limits, it is referred
Aligned porosity Grades 1 through 5 Grades 1 through 5
to by some specifications (for example, American Welding Society
Clustered porosity . Ungraded
(AWS)) as Inadequate Penetration.
Incomplete penetration Ungraded Ungraded
Tungsten inclusions . Ungraded
6.4 A crack, is a rupture of solidified metal. Cracks associ-
Undercut Ungraded Ungraded
ated with welding may be longitudinal, transverse, or radially
Cracks (longitudinal and transverse) Ungraded Ungraded
Crater crack . Ungraded
oriented and may occur in the weld metal, base metal, or
through both. When the plane of the crack is aligned with the
direction of the radiation beam, its radiographic image will
reference radiographs should be used in accordance with
appear as a well-defined jagged or a relatively straight line.As
contractual specifications.
the plane of the crack deviates from the direction of the
radiation beam, the appearance of the
...

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ASTM E1416-23(Practice)
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ABSTRACT
This test method covers a uniform procedure for radioscopic examination of weldments. Requirements expressed in this test method are intended to control the quality of the radioscopic images and are not intended for controlling acceptability or quality of welds. It applies only to the use of equipment for radioscopic examination in which the image is finally presented on a television monitor for operator evaluation. The examination may be recorded for later review. It does not apply to fully automated systems where evaluation is automatically performed by computer. Unless otherwise specified by the applicable job order or contract, radioscopic examination shall be performed in accordance with a written procedure which includes: material and thickness range to be examined; equipment to be used, including specifications of source parameters and imaging equipment parameters; examination geometry, including source-to-object distance, object-to-detector-distance and orientation; image quality indicator designation and placement; test-object scan plan, indicating the range of motions and manipulation speeds through which the test object shall be manipulated in order to ensure satisfactory results; image-processing parameters; image-display parameters; and image storage.
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1.1 This practice covers a uniform procedure for radioscopic examination of weldments. Requirements expressed in this practice are intended to control the quality of the radioscopic images and are not intended for controlling acceptability or quality of welds.  
1.2 This practice applies only to the use of equipment for radioscopic examination in which the image is finally presented on a display screen (monitor) for operator evaluation. The examination may be recorded for later review. It does not apply to fully automated systems where evaluation is automatically performed by computer.  
1.3 The radioscopic extent, the quality level, and the acceptance criteria to be applied shall be specified in the contract, purchase order, product specification, or drawings.  
1.4 This practice can be used for the detection of discontinuities. This practice also facilitates the examination of a weld from several directions, such as perpendicular to the weld surface and along both weld bevel angles. The radioscopic techniques described in this practice provide adequate assurance for defect detectability; however, it is recognized that, for special applications, specific techniques using more stringent requirements may be needed to provide additional detection capability. The use of specific radioscopic techniques shall be agreed upon between purchaser and supplier.  
1.5 Units—The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information only.  
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. Specific precautionary statements are given in Section 7.  
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ASTM E3044/E3044M-22(Practice)
Standard Practice for Ultrasonic Testing of Polyethylene Butt Fusion Joints

SIGNIFICANCE AND USE
5.1 This practice is intended primarily for the automated or semi-automated ultrasonic examination of butt fusion joints used in the construction of polyethylene piping systems.  
5.2 Polyethylene piping has been used in lieu of steel alloys in the petrochemical, power, water, gas distribution and mining industries due to its reliability and resistance to corrosion and erosion. Recently, polyethylene pipe has also been used for nuclear safety-related cooling water applications.  
5.3 Two ultrasonic techniques have proven useful to provide examination of fusion joint integrity; Ultrasonic time-of-flight-diffraction (TOFD) and phased array ultrasonic testing (PAUT). These techniques are often considered complementary but may be used independently of each other. The choice of the technique used may depend on a variety of parameters including diameter, thickness, surface access, detection capabilities near surfaces, and quality level required.  
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5.5 Polyethylene material can have a range of acoustic characteristics that make butt joint examination difficult. Acoustic velocity of the material is similar to that commonly used for ultrasound wedge materials, making it difficult to use these materials to achieve appropriate refraction of sound at the interface. Polyethylene materials are highly attenuative, which often limits the use of higher ultrasonic frequencies. It also exhibits a natural high frequency filtering effect. An example of the range of acoustic characteristics is provided in Table 1. The table notes the wide range of acoustic velocities reported in the literature. This makes it essential that the reference blocks are made of the same cell classification6 as that examined. This shall be confirmed by measuring the acoustic velocity of the pipe being examined as described in Practice E494. The acous...
SCOPE
1.1 This practice establishes procedures for ultrasonic testing (UT) of butt fusion joints in polyethylene pipe. Although high density polyethylene (HDPE) and medium density polyethylene (MDPE) materials are most commonly used, the procedures described may apply to other types of polyethylene.
Note 1: The notes in this practice are for information only and shall not be considered part of this specification.
Note 2: This practice references HDPE and MDPE for pipe applications as defined by Specification D3350.  
1.2 This practice does not address ultrasonic examination of electrofusion joints (coupling joints), socket joints, or saddles.  
1.3 This practice provides two ultrasonic examination procedures. Each has its own merits and requirements for examination and shall be selected as agreed upon in a contractual document.  
1.3.1 Examination Procedure A, Time of Flight Diffraction (TOFD), uses a pair of probes, one transmitting and the other receiving. The procedure usually, although not necessarily, requires access to both sides of the joint from one surface. Provided that position encoding is used, the procedure can be conducted by semi-automated or automated means that provide recoded imaging.  
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Standard Practice for Examination of Welds Using the Alternating Current Field Measurement Technique

SIGNIFICANCE AND USE
5.1 The purpose of the alternating current field measurement method is to evaluate welds for surface breaking discontinuities such as fabrication and fatigue cracks. The examination results may then be used by qualified organizations to assess weld service life or other engineering characteristics (beyond the scope of this practice). This practice is not intended for the examination of welds for non-surface breaking discontinuities.
SCOPE
1.1 This practice describes procedures to be followed during alternating current field measurement examination of welds for baseline and service-induced surface breaking discontinuities.  
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SIGNIFICANCE AND USE
4.1 This practice is intended primarily for the mechanized ultrasonic examination of pipe girth welds used in the construction of gas and oil pipelines. This practice, with appropriate modifications due to changes in weld profile, may also be used to examine repaired welds. Manual techniques such as described in Practice E164 may also be used to examine production or repaired welds. This practice, with appropriate modifications, may also be used to examine other forms of butt welds including long seams.  
4.2 Techniques used are to be based on zonal discrimination whereby the weld is divided into approximately equal vertical examination sections (zones) each being assessed by a pair of ultrasonic search units. See Fig. 1 for typical zones.
FIG. 1 Schematic Representation of Weld Zones and Discontinuities  
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SCOPE
1.1 This practice covers the use of an eddy current array (ECA) or an eddy current sensor for nondestructive examination of carbon steel welds. It includes the detection and sizing of surface-breaking cracks in such joints, accommodating for nonmagnetic and nonconductive coating up to 5 mm thick between the sensor and the joint. The practice covers a variety of cracking defects, such as fatigue cracks and other types of planar discontinuities, at various locations in the weld (heat-affected zone, toe area, and weld cap, for example). It covers the length and depth sizing of such surface-breaking discontinuities. This practice can be used for flush-ground and not flush-ground welds. For specific ferrous alloys or specific welded parts, the user may need a more specific procedure.  
1.2 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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5.1 Phased array ultrasonic testing (PAUT) is an advanced examination technique used for enhanced flaw detection, sizing, and imaging as compared to conventional UT employing single-element transducers. PAUT utilizes multi-element (array) probes in which groups of elements are pulsed with pre-calculated time delays (“focal laws”) for each element (“phasing”). The resulting constructive and destructive interference allows for electronic steering, shaping, and focusing of the sound beam.  
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SCOPE
1.1 This practice describes ultrasonic techniques for examining welds using phased array ultrasonic methods (see Note 1 and Note 2).  
1.2 This practice uses angle beams, either in S-scan or E-scan modes, primarily for butt welds and Tee welds. Alternative welding techniques, such as solid state bonding (for example, friction stir welding) and fusion welding (for example, electron beam welding) can be examined using this practice, provided adequate coverage and techniques are documented and approved. Practices for specific geometries such as spot welds are not included. The practice is intended to be used on thicknesses of 9 to 200 mm. Greater and lesser thicknesses may be examined using this practice if the technique can be demonstrated to provide adequate detection on mockups of the same wall thickness and geometry.  
1.2.1 Extreme caution should be used when attempting to size indications using phased array. It is likely that without proper procedures, indications can be oversized due to beam divergence, multiple virtual probes returning signals from the same indication, etc. For more guidance, see 12.4.  
1.3 Units—The values stated in SI units are to be regarded as standard.
Note 1: This practice is based on experience with ferrous and aluminum alloys. Other metallic materials can be examined using this practice, provided reference standards can be developed to demonstrate that the particular material and weld can be successfully penetrated by an ultrasonic beam.
Note 2: For additional pertinent information, see ASME BPVC Section V, Article 4, Guide E2491, Practice E317, and Practice E587.  
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.  
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ASTM E2373/E2373M-19(Practice)
Standard Practice for Use of the Ultrasonic Time of Flight Diffraction (TOFD) Technique

SIGNIFICANCE AND USE
4.1 This practice provides general principles for the application of the Time-of-Flight Diffraction Technique as a tool for detection and sizing of discontinuities.  
4.2 TOFD is a nondestructive ultrasonic examination technique that is not based on amplitude response. However, sufficient sensitivity is required to identify indications for evaluation.  
4.3 TOFD techniques are typically applied to welded joints in carbon steel, but the principles may be applicable to other applications including other materials with suitable validation procedures agreeable to the contracting parties.  
4.4 In addition to a stand-alone ultrasonic detection technique, TOFD may be used in conjunction with weld examinations such as those described in Practices E164 and E1961 where it may be used to improve sizing estimates of flaws detected by the manual or mechanized pulse-echo techniques and help discriminate between flaws and geometric reflectors.  
4.5 The technique has proven effective on thicknesses from 9 to 300 mm [0.375 to 12 in.]. TOFD has been used on thicknesses outside of this range but special considerations are necessary. Techniques developed outside of this range of thickness shall be demonstrated as capable of meeting the required detection and sizing requirements of the specification used.
SCOPE
1.1 This practice establishes the requirements for developing ultrasonic examination procedures using the ultrasonic technique known as Time-of-Flight Diffraction (TOFD).  
1.2 Consistent with ASTM Policy, TOFD may be regarded as an ultrasonic test method whereby the qualities and characteristics of the item tested are evaluated, measured, and, in some cases, identified. Measurements may be subject to precision and bias that may be determined statistically or as a function of some parameter(s) such as wavelength. This practice may be used for applications that would be quantitative examinations as well as quantitative tests.  
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.  
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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Standard Practice for Radiographic Examination of Weldments Using Industrial X-Ray Film

ABSTRACT
This test method provides a uniform procedure for radiographic examination of weldments using industrial radiographic film. Requirements expressed in this method are intended to control the quality of the radiographic images and are not intended for controlling acceptability or quality of welds. The apparatus shall comprise of a radiation source which may be X-ray or gamma-ray source; film holders and cassettes; intensifying screens such as lead-foil, fluorescent, fluorometallic, or other metallic screens; filters which shall be used whenever the contrast reductions caused by low energy, scattered radiation, or the extent of undercut (edge burn-off) occurring on production radiographs are of significant magnitude to cause difficulty in meeting the quality level or radiographic coverage requirements stipulated by the job order or contract; masking to improve radiographic quality; IQI's or penetrameters; shims, separate blocks, or like sections to facilitate IQI positioning; radiographic location and identification markers; and radiographic density measurement device. The test method shall meet the radiographic coverage, radiographic film quality, radiographic quality level, acceptance level, and radiographic density limitations. Procedures for surface preparation, radiation application and protection, IQI selection and placement, shim utilization, radiograph identification, and single-wall or double-wall radiographic techniques are addressed.
SCOPE
1.1 This practice provides a uniform procedure for radiographic examination of weldments using industrial radiographic film. Requirements expressed in this practice are intended to control the quality of the radiographic images and are not intended for controlling acceptability or quality of welds.  
1.2 The radiographic extent, the quality level, and the acceptance criteria to be applied shall be specified in the contract, purchase order, product specification, or drawings.  
1.3 The radiographic techniques stated herein provide adequate assurance for defect detectability; however, it is recognized that, for special applications, specific techniques using more or less stringent requirements may be required than those specified. In these cases, the use of alternative radiographic techniques shall be as agreed upon between purchaser and supplier (also see Section 4).  
1.4 The values stated in inch-pound units are to be regarded as standard.  
1.5 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 more specific safety precautionary information, see Section 9.)  
1.6 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
ASTM E164-19(Practice)
Standard Practice for Contact Ultrasonic Testing of Weldments

SIGNIFICANCE AND USE
3.1 The techniques for ultrasonic examination of welds described in this practice are intended to provide a means of weld examination for both internal and surface discontinuities within the weld and the heat-affected zone. The practice is limited to the examination of specific weld geometries in wrought or forged material.  
3.2 The techniques provide a practical method of weld examination for internal and surface discontinuities and are well suited to the task of in-process quality control. The practice is especially suited to the detection of discontinuities that present planar surfaces perpendicular to the sound beam. Other nondestructive examinations may be used when porosity and slag inclusions must be critically evaluated.  
3.3 When ultrasonic examination is used as a basis of acceptance of welds, there should be agreement between the manufacturer and the purchaser as to the specific reference standards and limits to be used. Examples of reference standards are given in Section 7. A detailed procedure for weld examination describing allowable discontinuity limits should be written and agreed upon.
SCOPE
1.1 This practice covers techniques for the ultrasonic A-scan examination of specific weld configurations joining wrought ferrous or aluminum alloy materials to detect weld discontinuities (see Note 1). The reflection method using pulsed waves is specified. Manual techniques are described employing contact of the search unit through a couplant film or water column.  
1.2 This practice utilizes angle beams or straight beams, or both, depending upon the specific weld configurations. Practices for special geometries such as fillet welds and spot welds are not included. The practice is intended to be used on thicknesses of 0.250 to 8 in. (6.4 to 203 mm).  
Note 1: This practice is based on experience with ferrous and aluminum alloys. Other metallic materials can be examined using this practice provided reference standards can be developed that demonstrate that the particular material and weld can be successfully penetrated by an ultrasonic beam.
Note 2: For additional pertinent information see Practice E317, Terminology E1316, and Practice E587.  
1.3 The values stated 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.  
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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ASTM
ASTM G58-85(2023)(Practice)
Standard Practice for Preparation of Stress-Corrosion Test Specimens for Weldments

SIGNIFICANCE AND USE
4.1 The intent of this practice is to indicate standard welded specimens and welding procedures for evaluating the SCC characteristics of weldments in corrosive environments. The practice does not recommend the specific corrosive media that may be selected by the user depending upon the intent of his investigation. Specific corrosive media are included in Practices G35, G36, G37, and G44. Other environments can be used as required.
SCOPE
1.1 This practice covers procedures for the making and utilization of test specimens for the evaluation of weldments in stress-corrosion cracking (SCC) environments.  
1.2 Test specimens are described in which (a) stresses are developed by the welding process only, (b) stresses are developed by an externally applied load in addition to the stresses due to welding, and (c) stresses are developed by an externally applied load only with residual welding stresses removed by annealing.  
1.3 This practice is concerned only with the welded test specimen and not with the environmental aspects of stress-corrosion testing. Specific practices for the bending and loading of test specimens, as well as the stress considerations involved in preparation of C-rings, U-bend, bent-beam, and tension specimens are discussed in other ASTM standards.  
1.4 The actual stress in test specimens removed from weldments is not precisely known because it depends upon the level of residual stress from the welding operation combined with the applied stress. A method for determining the magnitude and direction of residual stress which may be applicable to weldment is described in Test Method E837. The reproducibility of test results is highly dependent on the preparation of the weldment, the type of test specimen tested, and the evaluation criteria used. Sufficient replication should be employed to determine the level of inherent variability in the specific test results that is consistent with the objectives of the test program.  
1.5 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 more specific safety hazards information, see Section 7.)  
1.6 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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