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ASTM E1077-14(2021)

(Test Method)

Standard Test Methods for Estimating the Depth of Decarburization of Steel Specimens

Standard Test Methods for Estimating the Depth of Decarburization of Steel Specimens

SIGNIFICANCE AND USE
5.1 These test methods are used to detect surface losses in carbon content due to heating at elevated temperatures, as in hot working or heat treatment.  
5.2 Results of such tests may be used to qualify material for shipment according to agreed upon guidelines between purchaser and manufacturer, for guidance as to machining allowances, or to assess the influence of processing upon decarburization tendency.  
5.3 Screening tests are simple, fast, low-cost tests designed to separate non-decarburized samples from those with appreciable decarburization. Based on the results of such tests, the other procedures may be utilized as applicable.  
5.4 Microscopical tests require a metallographically polished cross section to permit reasonably accurate determination of the depth and nature of the decarburization present. Several methods may be employed for estimation of the depth of decarburization. The statistical accuracy of each varies with the amount of effort expended.  
5.5 Microindentation hardness methods are employed on polished cross sections and are most suitable for hardened specimens with reasonably uniform microstructures. This procedure can be used to define the depth to a specific minimum hardness or the depth to a uniform hardness.  
5.6 Chemical analytical methods are limited to specimens with simple, uniform shapes and are based on analysis of incremental turnings or after milling at fixed increments.  
5.7 Microscopical tests are generally satisfactory for determining the suitability of material for intended use, specification acceptance, manufacturing control, development, or research.
SCOPE
1.1 These test methods cover procedures for estimating the depth of decarburization of steels irrespective of the composition, matrix microstructure, or section shape. The following basic procedures may be used:  
1.1.1 Screening methods.  
1.1.2 Microscopical methods.  
1.1.3 Microindentation hardness methods.  
1.1.4 Chemical analysis methods.  
1.2 In case of a dispute, the rigorous quantitative or lineal analysis method (see 7.3.5 and 7.3.6) shall be the referee method. These methods can be employed with any cross-sectional shape. The chemical analytical methods generally reveal a greater depth of decarburization than the microscopical methods but are limited to certain simple shapes and by availability of equipment. These techniques are generally reserved for research studies. The microindentation hardness method is suitable for accurate measurements of hardened structures with relatively homogeneous microstructures.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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.

General Information

Status
Published
Publication Date
31-May-2021
ICS
77.080.20 - Steels
Technical Committee
E04 - Metallography
Drafting Committee
E04.14 - Quantitative Metallography
Current Stage
Ref Project

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ASTM E1077-14(2021) - Standard Test Methods for Estimating the Depth of Decarburization of Steel SpecimensASTM E1077-14(2021) - Standard Test Methods for Estimating the Depth of Decarburization of Steel Specimens
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ASTM E1077-14(2021) - Standard Test Methods for Estimating the Depth of Decarburization of Steel Specimens
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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.
Designation: E1077 − 14 (Reapproved 2021)
Standard Test Methods for
Estimating the Depth of Decarburization of Steel
1
Specimens
This standard is issued under the fixed designation E1077; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
INTRODUCTION
These test methods may be used to estimate the average or greatest depth of decarburization in
hardened or non-hardened steel products. The test methods described range from simple screening
tests to more statistically rigorous test methods depending upon the needs of the investigation.
1. Scope 1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard-
1.1 These test methods cover procedures for estimating the
ization established in the Decision on Principles for the
depth of decarburization of steels irrespective of the
Development of International Standards, Guides and Recom-
composition, matrix microstructure, or section shape. The
mendations issued by the World Trade Organization Technical
following basic procedures may be used:
Barriers to Trade (TBT) Committee.
1.1.1 Screening methods.
1.1.2 Microscopical methods.
2. Referenced Documents
1.1.3 Microindentation hardness methods.
2
2.1 ASTM Standards:
1.1.4 Chemical analysis methods.
A941TerminologyRelatingtoSteel,StainlessSteel,Related
1.2 In case of a dispute, the rigorous quantitative or lineal
Alloys, and Ferroalloys
analysis method (see 7.3.5 and 7.3.6) shall be the referee
E3Guide for Preparation of Metallographic Specimens
method. These methods can be employed with any cross-
E7Terminology Relating to Metallography
sectional shape. The chemical analytical methods generally
E340Practice for Macroetching Metals and Alloys
reveal a greater depth of decarburization than the microscopi-
E350Test Methods for Chemical Analysis of Carbon Steel,
cal methods but are limited to certain simple shapes and by
Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and
availability of equipment. These techniques are generally
Wrought Iron
reserved for research studies. The microindentation hardness
E384Test Method for Microindentation Hardness of Mate-
method is suitable for accurate measurements of hardened
rials
structures with relatively homogeneous microstructures.
E407Practice for Microetching Metals and Alloys
1.3 The values stated in SI units are to be regarded as
E415Test Method for Analysis of Carbon and Low-Alloy
standard. No other units of measurement are included in this
Steel by Spark Atomic Emission Spectrometry
standard.
E1951Guide for Calibrating Reticles and Light Microscope
Magnifications
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
3.1 Definitions:
mine the applicability of regulatory limitations prior to use.
3.1.1 Fordefinitionsoftermsusedinthesetestmethods,see
Terminology E7 and Terminology A941.
3.2 Definitions of Terms Specific to This Standard:
1
These test methods are under the jurisdiction of ASTM Committee E04 on
Metallography and are the direct responsibility of Subcommittee E04.14 on
2
Quantitative Metallography. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved June 1, 2021. Published June 2021. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1985. Last previous edition approved in 2014 as E1077–14. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/E1077-14R21. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E1077 − 14 (2021)
3.2.1 average depth of decarburization—the mean value of cedure can be used to define the depth to a specific minimum
five or more measurements of the total depth of decarburiza- hardness or the depth to a uniform hardness.
tion.
5.6 Chemical analytical methods are limited to specimens
3.2.2 average free-ferrite depth—the mean value of five or
with simple, uniform shapes and are based on analysis of
more measurements of the depth of complete decarburization.
incremental turnings or
...

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1.4 If possible, X-ray diffraction peak interference from other crystalline phases such as carbides should be eliminated from the ferrite and austenite peak intensities.  
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This specification covers alloy steel and stainless steel bolting material for pressure vessels, valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications. Ferritic steels shall be properly heat treated as best suits the high temperature characteristics of each grade. Immediately after rolling or forging, the bolting material shall be allowed to cool to a temperature below the cooling transformation range. The chemical composition requirements for each alloy are presented in details. The steel shall not contain an unspecified element for ordered grade to the extent that the steel conforms to the requirements of another grade for which that element is a specified element. The tensile property and hardness property requirements are discussed, the tensile property requirement is highlighted by a full size fasteners, wedge tensile testing.
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Note 1: The committee formulating this specification has included several steel types that have been rather extensively used for the present purpose. Other compositions will be considered for inclusion by the committee from time to time as the need becomes apparent.
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Standard Practice for Characterizing Neutron Exposures in Iron and Low Alloy Steels in Terms of Displacements Per Atom (DPA)

SIGNIFICANCE AND USE
4.1 A pressure vessel surveillance program requires a methodology for relating radiation-induced changes in materials exposed in accelerated surveillance locations to the condition of the pressure vessel (see Practice E853). An important consideration is that the irradiation exposures be expressed in a unit that is physically related to the damage mechanisms.  
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1.1 This practice describes a standard procedure for characterizing neutron irradiations of iron (and low alloy steels) in terms of the exposure index displacements per atom (dpa) for iron.  
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1.4 Procedures analogous to this one can be formulated for calculating dpa in charged particle irradiations. (See Practice E521.)  
1.5 The application of this practice requires knowledge of the total neutron fluence and flux spectrum. Refer to Practice E521 for determining these quantities.  
1.6 The correlation of radiation effects data is beyond the scope of this practice.  
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Standard Test Method for X-Ray Determination of Retained Austenite in Steel with Near Random Crystallographic Orientation

SIGNIFICANCE AND USE
2.1 Significance—Retained austenite with a near random crystallographic orientation is found in the microstructure of heat-treated low-alloy, high-strength steels that have medium (0.40 weight %) or higher carbon contents. Although the presence of retained austenite may not be evident in the microstructure, and may not affect the bulk mechanical properties such as hardness of the steel, the transformation of retained austenite to martensite during service can affect the performance of the steel.  
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This practice explains the procedure for identifying standard grades and types of flat-rolled electrical steels in ASTM electrical steel specifications. This practice applies to flat-rolled magnetically soft irons and steel such as low-carbon steels and alloys of iron with silicon, aluminum, and so forth produced to a specified thickness and maximum value of core loss. These designations are intended to replace the old AISI M designations which are no longer supported. The practice also has a cross-reference between thickness and electrical sheet gage number.
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1.1 This practice covers the procedure for designating (within ASTM specifications) standard grades of flat-rolled electrical steels made to specified maximum values of specific core loss. This practice applies to magnetically soft irons and steel (low-carbon steels and alloys of iron with silicon, aluminum, and other alloying elements) where a core loss measurement at a stated peak value of alternating induction and a stated frequency, such as 1.5 T (15 kG) and 60 Hz, is normally used to grade the material. This practice also applies when some other property is specified (or a different induction or frequency, or both) as the limiting characteristic, provided the material also meets all the requirements of the ASTM specification.  
1.2 Individual specifications that are in conformity with this practice are Specifications A677, A683, A726, A876, and A1086.  
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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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Standard Test Method for Analysis of Carbon and Low-Alloy Steel by Spark Atomic Emission Spectrometry

SIGNIFICANCE AND USE
5.1 This test method for the spectrometric analysis of metals and alloys is primarily intended to test such materials for compliance with compositional specifications. It is assumed that all who use this test method will be analysts capable of performing common laboratory procedures skillfully and safely. It is expected that work will be performed in a properly equipped laboratory.
SCOPE
1.1 This test method covers the simultaneous determination of 21 alloying and residual elements in carbon and low-alloy steels by spark atomic emission vacuum spectrometry in the mass fraction ranges shown Note 1.
Element  
Composition Range, %  
Applicable Range,
Mass Fraction %A  
Quantitative Range,
Mass Fraction %B  
Aluminum  
0 to 0.093  
0.006 to 0.093  
Antimony  
0 to 0.027  
0.006 to 0.027  
Arsenic  
0 to 0.1  
0.003 to 0.1  
Boron  
0 to 0.007  
0.0004 to 0.007  
Calcium  
0 to 0.003  
0.002 to 0.003  
Carbon  
0 to 1.1  
0.02 to 1.1  
Chromium  
0 to 8.2  
0.007 to 8.14  
Cobalt  
0 to 0.20  
0.006 to 0.20  
Copper  
0 to 0.5  
0.006 to 0.5  
LeadC  
0 to 0.2  
0.002 to 0.2    
Manganese  
0 to 2.0  
0.03 to 2.0  
Molybdenum  
0 to 1.3  
0.007 to 1.3  
Nickel  
0 to 5.0  
0.006 to 5.0  
Niobium  
0 to 0.12  
0.003 to 0.12  
Nitrogen  
0 to 0.015  
0.01 to 0.055  
Phosphorous  
0 to 0.085  
0.006 to 0.085  
Silicon  
0 to 1.54  
0.02 to 1.54  
Sulfur  
0 to 0.055  
0.001 to 0.055  
Tin  
0 to 0.061  
0.005 to 0.061    
Titanium  
0 to 0.2  
0.001 to 0.2    
Vanadium  
0 to 0.3  
0.003 to 0.3    
Zirconium  
0 to 0.05  
0.01 to 0.05
Note 1: The mass fraction ranges of the elements listed have been established through cooperative testing2 of reference materials.  
1.2 This test method covers analysis of specimens having a diameter adequate to overlap and seal the bore of the spark stand opening. The specimen thickness can vary significantly according to the design of the spectrometer stand, but a thickness between 10 mm and 38 mm has been found to be most practical.  
1.3 This test method covers the routine control analysis in iron and steelmaking operations and the analysis of processed material. It is designed for chill-cast, rolled, and forged specimens. Better performance is expected when reference materials and specimens are of similar metallurgical condition and composition. However, it is not required for all applications of this standard.  
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ABSTRACT
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SCOPE
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1.3 Supplementary Requirements are provided for use at the option of the purchaser. The Supplementary Requirements shall only apply when specified individually by the purchaser in the purchase order or contract.  
1.4 This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract specifies the applicable “M” specification designation (SI units), the inch-pound units shall apply.  
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
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.  
1.7 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 A255-20a(Test Method)
Standard Test Methods for Determining Hardenability of Steel

SIGNIFICANCE AND USE
3.1 This test method covers the procedure for determining the hardenability of steel by the end-quench or Jominy test. The test consists of water quenching one end of a cylindrical test specimen 1.0 in. in diameter and measuring the hardening response as a function of the distance from the quenched end.
SCOPE
1.1 These test methods cover the identification and description of test methods for determining the hardenability of steels. The two test methods include the quantitative end-quench or Jominy Test and a method for calculating the hardenability of steel from the chemical composition based on the original work by M. A. Grossman.  
1.2 The selection of the test method to be used for determining the hardenability of a given steel shall be agreed upon between the supplier and user. The Certified Material Test Report shall state the method of hardenability determination.  
1.3 The calculation method described in these test methods is applicable only to the range of chemical compositions that follow:    
Element  
Range, %  
Carbon  
0.10–0.70  
Manganese  
0.50–1.65  
Silicon  
0.15–0.60  
Nickel  
1.50 max  
Chromium  
1.35 max  
Molybdenum  
0.55 max  
Copper  
0.35 max  
Vanadium  
0.20 max  
1.4 Hardenability is a measure of the depth to which steel will harden when quenched from its austenitizing temperature (Table 1). It is measured quantitatively, usually by noting the extent or depth of hardening of a standard size and shape of test specimen in a standardized quench. In the end-quench test the depth of hardening is the distance along the specimen from the quenched end which correlates to a given hardness level.    
1.5 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.  
1.6 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.  
1.7 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 E3039-20(Test Method)
Standard Test Method for Determination of Crack-Tip-Opening Angle of Ferritic Steels Using DWTT-Type Specimens

SCOPE
1.1 This test method covers the determination of fracture propagation toughness in terms of the steady-state crack-tip-opening angle (CTOA) using the drop-weight tear test (DWTT)-type specimen. The method is applicable to ferritic steels that exhibit predominantly ductile fracture with at least 85 % shear area measured according to Test Method E436 - Standard Test Method for Drop-Weight Tear Tests of Ferritic Steels. This test method applies to ferritic steels with thicknesses between 6 mm and 20 mm. Annex A1 describes the method to test ferritic steels with thicknesses between 20 mm to 32 mm.  
1.2 In terms of apparatus, specimen design, and test methodology, this test method draws from Test Method E436 and API 5L3 - Recommended Practice for Conducting Drop-Weight Tear Tests on Line Pipe.  
1.3 The development of this test method has been driven by the need to design for fast ductile fracture arrest of axial running cracks in steel high-pressure gas pipelines (1). 2The purpose has been to develop a test to characterize fracture propagation resistance in a form suitable for use as a pipe mill test (2). The traditional Charpy test has been shown to be inadequate for modern high toughness pipe steels (1). This test method measures fracture propagation resistance in terms of crack-tip opening angle, and is used to characterize ferritic steels.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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.  
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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