ASTM B603 - 07(2013)
Standard Specification for Drawn or Rolled Iron-Chromium-Aluminum Alloys for Electrical Heating Elements
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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.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1. 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.
| Class | Resistivity Range | Composition Range, % | ||
|
| Ω·cmil/ft | μΩ·cm | Al | Cr |
| I | 825 to 920 | 135 to 150 | 5.00 to 6.00 | 20 to 24 |
| IIA | 795 to 880 | 130 to 144 | 4.75 to 5.75 | 20 to 24 |
| IIB | 770 to 855 | 130 to 144 | 4.00 to 5.25 | 20 to 24 |
| 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 |
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 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
B63 Test Method for Resistivity of Metallically Conducting Resistance and Contact Materials
B70 Test Method for Change of Resistance With Temperature of Metallic Materials for Electrical Heating
B78 Test Method of Accelerated Life of Iron-Chromium-Aluminum Alloys for Electrical Heating
ICS Code
ICS Number Code 77.100 (Ferroalloys)
UNSPSC Code
UNSPSC Code 11171600(Stainless steel alloys)
Referencing This Standard
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DOI: 10.1520/B0603-07R13
Citation Format
ASTM B603-07(2013), Standard Specification for Drawn or Rolled Iron-Chromium-Aluminum Alloys for Electrical Heating Elements, ASTM International, West Conshohocken, PA, 2013, www.astm.org
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