ASTM A941-09
(Terminology)Standard Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
Standard Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
SCOPE
1.1 This standard is a compilation of definitions of terms related to steel, stainless steel, related alloys, and ferroalloys.
1.2 When a term is used in an ASTM document for which Committee A01 is responsible, it is included herein only when judged, after review by Subcommittee A01.92, to be a generally usable term.
1.3 Some definitions include a discussion section, which is a mandatory part of the definition and contains additional information that is relevant to the meaning of the defined term.
1.4 Definitions of terms specific to a particular standard will appear in that standard and will supersede any definitions of identical terms in this standard.
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Designation: A941 – 09
Standard Terminology Relating to
1
Steel, Stainless Steel, Related Alloys, and Ferroalloys
This standard is issued under the fixed designation A941; 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 (ϵ) indicates an editorial change since the last revision or reapproval.
1. Scope* solidification, the rimming action was limited by mechanical
or chemical means.
1.1 This standard is a compilation of definitions of terms
carbon steel, n—a steel that conforms to a specification that
related to steel, stainless steel, related alloys, and ferroalloys.
prescribes a maximum limit, by heat analysis in mass
1.2 When a term is used in an ASTM document for which
percent, of not more than: 2.00 for carbon and 1.65 for
CommitteeA01 is responsible, it is included herein only when
manganese, but does not prescribe a minimum limit for
judged, after review by Subcommittee A01.92, to be a gener-
chromium, cobalt, molybdenum, nickel, niobium (colum-
ally usable term.
bium), tungsten (wolfram), vanadium, or zirconium.
1.3 Some definitions include a discussion section, which is
a mandatory part of the definition and contains additional
DISCUSSION—Except as required above, it is permissible for carbon
information that is relevant to the meaning of the defined term.
steel specifications to prescribe limits (minimum or maximum, or both)
for each specified alloying element, subject to the following restrictions
1.4 Definitions of terms specific to a particular standard will
for the heat analysis limits in mass percent:
appear in that standard and will supersede any definitions of
(a) for wrought carbon steel products, the specified maximum limit is
identical terms in this standard.
not to exceed: 0.10 for aluminum, 0.60 for silicon, and 0.050 for
titanium;
2. Referenced Documents
(b) for carbon steel castings, the specified maximum limit is not to
2
2.1 ASTM Standards:
exceed: 0.10 for aluminum, 1.00 for silicon, and 0.050 for titanium.
E112 Test Methods for Determining Average Grain Size
(c) for carbon steels that are required to be rephosphorized, the
specified minimum limit for phosphorus is not to be less than 0.040;
3. Terminology
(d) for carbon steels that are required to be resulfurized, the specified
minimum limit for sulfur is not to be less than 0.060;
3.1 Definitions of General Terms:
(e) for carbon steels that are not required to be rephosphorized or
resulfurized, the specified maximum limit is not to exceed: 0.60 for
age hardening, n—see precipitation hardening.
copper, 0.050 for phosphorus, and 0.060 for sulfur; and
alloy steel, n—a steel, other than a stainless steel, that
(f) for carbon steels that are required to contain boron, copper, or lead,
conforms to a specification that requires one or more of the
thespecifiedminimumlimitisnottoexceed:0.0005forboron,0.35for
following elements, by mass percent, to have a minimum
copper, and 0.25 for lead.
content equal to or greater than: 0.30 for aluminum; 0.0008
cast analysis—Deprecated term. Use the preferred term heat
for boron; 0.30 for chromium; 0.30 for cobalt; 0.40 for
analysis.
copper; 0.40 for lead; 1.65 for manganese; 0.08 for molyb-
certificate of compliance, n—in manufactured products,a
denum; 0.30 for nickel; 0.06 for niobium (columbium); 0.60
document that states that the product was manufactured,
for silicon; 0.05 for titanium; 0.30 for tungsten (wolfram);
sampled, tested, and inspected in accordance with the
0.10 for vanadium; 0.05 for zirconium; or 0.10 for any other
requirements of the specification (including year of issue)
alloying element, except sulphur, phosphorus, carbon, and
andanyotherrequirementsspecifiedinthepurchaseorderor
nitrogen.
contract, and has been found to meet such requirements.
capped steel, n—a rimmed steel in which, during ingot
DISCUSSION—A single document, containing test report information
and certificate of compliance information, may be used.
1
This terminology is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
certifying organization, n—in product specifications, the
A01.92 on Terminology.
entity responsible for the conformance and certification of
Current edition approved April 1, 2009. Published May 2009. Originally
the product to the specification requirements.
approved in 1995. Last previous edition approved in 2006 as A941 – 06a. DOI:
10.1520/A0941-09.
check analysis—Deprecated term. Use the preferred term
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
product analysis.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
coarse grain practice, n—a steelma
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM 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: A941 – 09
Standard Terminology Relating to
1
Steel, Stainless Steel, Related Alloys, and Ferroalloys
This standard is issued under the fixed designation A941; 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 This standard is a compilation of definitions of terms related to steel, stainless steel, related alloys, and ferroalloys.
1.2 WhenatermisusedinanASTMdocumentforwhichCommitteeA01isresponsible,itisincludedhereinonlywhenjudged,
after review by Subcommittee A01.92, to be a generally usable term.
1.3 Some definitions include a discussion section, which is a mandatory part of the definition and contains additional
information that is relevant to the meaning of the defined term.
1.4 Definitions of terms specific to a particular standard will appear in that standard and will supersede any definitions of
identical terms in this standard.
2. Referenced Documents
2
2.1 ASTM Standards:
E112 Test Methods for Determining Average Grain Size
3. Terminology
3.1 Definitions of General Terms:
age hardening, n—see precipitation hardening.
alloy steel, n—a steel, other than a stainless steel, that conforms to a specification that requires one or more of the following
elements, by mass percent, to have a minimum content equal to or greater than: 0.30 for aluminum; 0.0008 for boron; 0.30 for
chromium; 0.30 for cobalt; 0.40 for copper; 0.40 for lead; 1.65 for manganese; 0.08 for molybdenum; 0.30 for nickel; 0.06 for
niobium (columbium); 0.60 for silicon; 0.05 for titanium; 0.30 for tungsten (wolfram); 0.10 for vanadium; 0.05 for zirconium;
or 0.10 for any other alloying element, except sulphur, phosphorus, carbon, and nitrogen.
capped steel, n—a rimmed steel in which, during ingot solidification, the rimming action was limited by mechanical or chemical
means.
carbon steel, n—a steel that conforms to a specification that prescribes a maximum limit, by heat analysis in mass percent, of
not more than: 2.00 for carbon and 1.65 for manganese, but does not prescribe a minimum limit for chromium, cobalt,
molybdenum, nickel, niobium (columbium), tungsten (wolfram), vanadium, or zirconium.
DISCUSSION—Except as required above, it is permissible for carbon steel specifications to prescribe limits (minimum or maximum, or both) for each
specified alloying element, subject to the following restrictions for the heat analysis limits in mass percent:
(a) for wrought carbon steel products, the specified maximum limit is not to exceed: 0.10 for aluminum, 0.60 for silicon, and 0.050 for titanium;
(b) for carbon steel castings, the specified maximum limit is not to exceed: 0.10 for aluminum, 1.00 for silicon, and 0.050 for titanium.
(c) for carbon steels that are required to be rephosphorized, the specified minimum limit for phosphorus is not to be less than 0.040;
(d) for carbon steels that are required to be resulfurized, the specified minimum limit for sulfur is not to be less than 0.060;
(e) for carbon steels that are not required to be rephosphorized or resulfurized, the specified maximum limit is not to exceed: 0.60 for copper, 0.050
for phosphorus, and 0.060 for sulfur; and
(f) forcarbonsteels that are required to contain boron, copper, or lead, the specified minimum limit is not to exceed: 0.0005 for boron, 0.35 for copper,
and 0.25 for lead.
cast analysis—Deprecated term. Use the preferred term heat analysis.
certificate of compliance, n—in manufactured products, a document that states that the product was manufactured, sampled,
tested, and inspected in accordance with the requirements of the specification (including year of issue) and any other
requirements specified in the purchase order or contract, and has been found to meet such requirements.
1
This terminology is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.92
on Terminology.
Current edition approved April 1, 2009. Published May 2009. Originally approved in 1995. Last previous edition approved in 2006 as A941 – 06a. DOI:
10.1520/A0941-09.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes sect
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM 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:A 941–06a Designation: A941 – 09
Standard Terminology Relating to
1
Steel, Stainless Steel, Related Alloys, and Ferroalloys
This standard is issued under the fixed designation A941; 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 This standard is a compilation of definitions of terms related to steel, stainless steel, related alloys, and ferroalloys.
1.2 WhenatermisusedinanASTMdocumentforwhichCommitteeA01isresponsible,itisincludedhereinonlywhenjudged,
after review by Subcommittee A01.92, to be a generally usable term.
1.3 Some definitions include a discussion section, which is a mandatory part of the definition and contains additional
information that is relevant to the meaning of the defined term.
1.4 Definitions of terms specific to a particular standard will appear in that standard and will supersede any definitions of
identical terms in this standard.
2. Referenced Documents
2
2.1 ASTM Standards:
E112 Test Methods for Determining Average Grain Size
3. Terminology
3.1 Definitions of General Terms:
age hardening, n—see precipitation hardening.
alloy steel, n—a steel, other than a stainless steel, that conforms to a specification that requires one or more of the following
elements, by mass percent, to have a minimum content equal to or greater than: 0.30 for aluminum; 0.0008 for boron; 0.30 for
chromium; 0.30 for cobalt; 0.40 for copper; 0.40 for lead; 1.65 for manganese; 0.08 for molybdenum; 0.30 for nickel; 0.06 for
niobium (columbium); 0.60 for silicon; 0.05 for titanium; 0.30 for tungsten (wolfram); 0.10 for vanadium; 0.05 for zirconium;
or 0.10 for any other alloying element, except sulphur, phosphorus, carbon, and nitrogen.
capped steel, n—a rimmed steel in which, during ingot solidification, the rimming action was limited by mechanical or chemical
means.
carbon steel, n—a steel that conforms to a specification that prescribes a maximum limit, by heat analysis in mass percent, of
not more than: 2.00 for carbon and 1.65 for manganese, but does not prescribe a minimum limit for chromium, cobalt,
molybdenum, nickel, niobium (columbium), tungsten (wolfram), vanadium, or zirconium.
DISCUSSION—Except as required above, it is permissible for carbon steel specifications to prescribe limits (minimum or maximum, or both) for each
specified alloying element, subject to the following restrictions for the heat analysis limits in mass percent:
(a) for wrought carbon steel products, the specified maximum limit is not to exceed: 0.10 for aluminum, 0.60 for silicon, and 0.050 for titanium;
(b) for carbon steel castings, the specified maximum limit is not to exceed: 0.10 for aluminum, 1.00 for silicon, and 0.050 for titanium.
(c) for carbon steels that are required to be rephosphorized, the specified minimum limit for phosphorus is not to be less than 0.040;
(d) for carbon steels that are required to be resulfurized, the specified minimum limit for sulfur is not to be less than 0.060;
(e) for carbon steels that are not required to be rephosphorized or resulfurized, the specified maximum limit is not to exceed: 0.60 for copper, 0.050
for phosphorus, and 0.060 for sulfur; and
(f) forcarbonsteels that are required to contain boron, copper, or lead, the specified minimum limit is not to exceed: 0.0005 for boron, 0.35 for copper,
and 0.25 for lead.
cast analysis—Deprecated term. Use the preferred term heat analysis.
certificate of compliance, n—in manufactured products, a document that states that the product was manufactured, sampled,
tested, and inspected in accordance with the requirements of the specification (including year of issue) and any other
1
This terminology is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.92
on Terminology.
Current edition approved June 15, 2006. Published July 2006. Originally approved in 1995. Last previous edition approved in 2006 as A 941–06.
Current edition approved April 1, 2009. Published May 2009. Originally approved in 1995. Last previous edition approved in 2006 as A941 – 06a. DOI:
10.1520/A0941-09.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document
...
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