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ASTM B603-07

(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 .
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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 Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
30-Apr-2007
ICS
29.100.20 - Electrical and electromechanical components
Technical Committee
B02 - Nonferrous Metals and Alloys
Drafting Committee
B02.10 - Thermostat Metals and Electrical Resistance Heating Materials
Current Stage
Ref Project

Relations

Replaces
ASTM B603-90(2001) - Standard Specification for Drawn or Rolled Iron-Chromium-Aluminum Alloys for Electrical Heating Elements
Effective Date
01-May-2007
Replaced By
ASTM B603-07(2013) - Standard Specification for Drawn or Rolled Iron-Chromium-Aluminum Alloys for Electrical Heating Elements
Effective Date
01-May-2013

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ASTM B603-07 - Standard Specification for Drawn or Rolled Iron-Chromium-Aluminum Alloys for Electrical Heating ElementsASTM B603-07 - Standard Specification for Drawn or Rolled Iron-Chromium-Aluminum Alloys for Electrical Heating Elements
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ASTM B603-07 - Standard Specification for Drawn or Rolled Iron-Chromium-Aluminum Alloys for Electrical Heating Elements
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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:B603 −07
StandardSpecification for
Drawn or Rolled Iron-Chromium-Aluminum Alloys for
1
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 4. Significance and Use
1.1 This specification covers annealed, drawn, or rolled
4.1 This specification on iron-chromium-aluminum alloys
shapes for electrical heating and resistance purposes of alloys
contains the requirements for chemistry, electrical resistance,
consistingmainlyofiron,chromium,andaluminumasdetailed
mechanicalproperties,resistancechangewithtemperature,and
in Table 1.
packaging.
1.2 The values stated in inch-pound units are to be regarded
4.2 Determination of properties is not required for routine
as the standard. The values given in parentheses are for
acceptance of material unless specified by the purchaser.
information only.
1.3 This standard does not purport to address all of the
5. Chemical Requirements
safety concerns, if any, associated with its use. It is the
5.1 The alloys shall conform to the requirements as to
responsibility of the user of this standard to become familiar
chemical composition prescribed in Table 1.
with all hazards including those identified in the appropriate
Material Safety Data Sheet (MSDS) for this product/material
5.2 Samples for Chemical Analysis—Specimens for chemi-
as provided by the manufacturer, to establish appropriate
calanalysismaybetakeneitherfromthemeltorfromasample
safety and health practices, and determine the applicability of
of finished material that is representative of the lot.
regulatory limitations prior to use.
5.3 Chemical Analysis—The chemical analysis shall be
2. Referenced Documents
made in accordance with accepted practices. See Test Methods
2
A751.
2.1 ASTM Standards:
A751 Test Methods, Practices, and Terminology for Chemi-
6. Physical Requirements
cal Analysis of Steel Products
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:
B78 Test Method of Accelerated Life of Iron-Chromium-
Aluminum Alloys for Electrical Heating
Size Elongation in
10-in. (250-mm)
minimum, %
3. Terminology
0.0035 in. (No. 39 Awg)(0.089 mm) and larger 12
0.0031 to 0.0020 in. (Nos. 40 to 44 Awg) 6
3.1 Definitions:
(0.079 to 0.015 mm)
3.1.1 lot size, n—the lot size for determining compliance
with the requirements of this specification shall be one heat.
7. Nominal Resistivity
7.1 The nominal resistivity shall be the resistivity of the
1
This specification is under the jurisdiction of ASTM Committee B02 on
wire as quenched from a temperature above 1450°F (788°C).
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
The numerical values of the resistivity range at 77°F (25°C)
B02.10 on Thermostat Metals and Electrical Resistance Heating Materials.
Current edition approved May 1, 2007. Published June 2007. Originally
shall be as shown in Table 1.
approved in 1975. Last previous edition approved in 2001 as B603 – 90 (2001).
DOI: 10.1520/B0603-07.
2 8. Test for Resistivity
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
8.1 The resistivity shall be determined in accordance with
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Test Method B63.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B603−07
TABLE 1 Chemical Requirements TABLE 2 Electrical Resistance Tolerance
Class Resistivity Range Composition Range, % Resistance
Ω·cmil/ft µΩ·cm Al Cr Tolerance, %
I 825 to 920 135 to 150 5.00 to 6.00 20 to 24 Round Wire:
IIA 795 to 880 130 to 144 4.75 to 5.75 20 to 24 0.0050-in. (0.127-mm) diameter and larger ±5
IIB 770 to 855 130 to 144 4.00 to 5.25 20 to 24 Finer than 0.0050 to 0.0020-in. (0.127 to ±8
0.051-mm) diameter, incl
III 715 to 785 119 to 130 3.75 to 4.75 13 to 16
IV 665 to 735 111 to 122 2.75 to 3.75 12 to 15 Finer than 0.0020-in. (0.051-mm) diameter ±10
Strip:
Cold rolled ±5
Hot rolled ±8
9. Nominal Electrical Resistance for Unit Length
9.1 The nominal resistance per unit length for round wire
shall be calculated from the nominal resistivities and the
12. Acceler
...

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SCOPE
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7.5  
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