ASTM B603-07(2018)
(Specification)Standard Specification for Drawn or Rolled Iron-Chromium-Aluminum Alloys for Electrical Heating Elements
Standard Specification for Drawn or Rolled Iron-Chromium-Aluminum Alloys for Electrical Heating Elements
ABSTRACT
This specification covers annealed, drawn or rolled iron-chromium-aluminum alloy shapes used for electrical heating and resistance purposes. This specification contains the requirements for chemical composition, electrical resistance, mechanical properties and temperature-dependent changes in resistance of the alloys.
SCOPE
1.1 This specification covers annealed, drawn, or rolled shapes for electrical heating and resistance purposes of alloys consisting mainly of iron, chromium, and aluminum as detailed in Table 1.
1.2 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.
1.3 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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.
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.
General Information
Relations
Standards Content (Sample)
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: B603 −07 (Reapproved 2018)
Standard Specification for
Drawn or Rolled Iron-Chromium-Aluminum Alloys for
Electrical Heating Elements
This standard is issued under the fixed designation B603; 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 B78 Test Method of Accelerated Life of Iron-Chromium-
Aluminum Alloys for Electrical Heating
1.1 This specification covers annealed, drawn, or rolled
shapes for electrical heating and resistance purposes of alloys
3. Terminology
consistingmainlyofiron,chromium,andaluminumasdetailed
in Table 1. 3.1 Definitions:
3.1.1 lot size, n—the lot size for determining compliance
1.2 The values stated in inch-pound units are to be regarded
with the requirements of this specification shall be one heat.
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only
4. Significance and Use
and are not considered standard.
4.1 This specification on iron-chromium-aluminum alloys
1.3 This standard does not purport to address all of the
contains the requirements for chemistry, electrical resistance,
safety concerns, if any, associated with its use. It is the
mechanicalproperties,resistancechangewithtemperature,and
responsibility of the user of this standard to become familiar
packaging.
with all hazards including those identified in the appropriate
Safety Data Sheet (SDS) for this product/material as provided
4.2 Determination of properties is not required for routine
by the manufacturer, to establish appropriate safety, health,
acceptance of material unless specified by the purchaser.
and environmental practices, and determine the applicability
of regulatory limitations prior to use.
5. Chemical Requirements
1.4 This international standard was developed in accor-
5.1 The alloys shall conform to the requirements as to
dance with internationally recognized principles on standard-
chemical composition prescribed in Table 1.
ization established in the Decision on Principles for the
5.2 Samples for Chemical Analysis—Specimens for chemi-
Development of International Standards, Guides and Recom-
calanalysismaybetakeneitherfromthemeltorfromasample
mendations issued by the World Trade Organization Technical
of finished material that is representative of the lot.
Barriers to Trade (TBT) Committee.
5.3 Chemical Analysis—The chemical analysis shall be
2. Referenced Documents
made in accordance with accepted practices. See Test Methods
2.1 ASTM Standards: A751.
A751 Test Methods, Practices, and Terminology for Chemi-
cal Analysis of Steel Products 6. Physical Requirements
B63 Test Method for Resistivity of Metallically Conducting
6.1 The material shall be thoroughly and uniformly an-
Resistance and Contact Materials
nealed.
B70 Test Method for Change of Resistance With Tempera-
6.2 Wire shall conform to the following elongation require-
ture of Metallic Materials for Electrical Heating
ments:
Elongation in
Size 10-in. (250-mm)
This specification is under the jurisdiction of ASTM Committee B02 on
minimum, %
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
0.0035 in. (No. 39 Awg)(0.089 mm) and larger 12
B02.10 on Thermostat Metals and Electrical Resistance Heating Materials.
0.0031 to 0.0020 in. (Nos. 40 to 44 Awg) 6
Current edition approved April 1, 2018. Published April 2018. Originally
(0.079 to 0.015 mm)
approved in 1975. Last previous edition approved in 2013 as B603 – 07 (2013).
DOI: 10.1520/B0603-07R18.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 7. Nominal Resistivity
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
7.1 The nominal resistivity shall be the resistivity of the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. wire as quenched from a temperature above 1450°F (788°C).
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B603 − 07 (2018)
TABLE 1 Chemical Requirements TABLE 2 Electrical Resistance Tolerance
Resistivity Range Composition Range, % Resistance
Class
Tolerance, %
Ω·cmil/ft µΩ·cm Al Cr
Round Wire:
I 825 to 920 135 to 150 5.00 to 6.00 20 to 24
0.0050-in. (0.127-mm) diameter and larger ±5
IIA 795 to 880 130 to 144 4.75 to 5.75 20 to 24
Finer than 0.0050 to 0.0020-in. (0.127 to ±8
IIB 770 to 855 130 to 144 4.00 to 5.25 20 to 24
0.051-mm) diameter, in
...
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