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