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Description of ASTM-E696 2013ASTM E696 - 07(2013)Standard Specification for Tungsten-Rhenium Alloy Thermocouple WireActive Standard ASTM E696 | Developed by Subcommittee: E20.04 Book of Standards Volume: 14.03 ASTM E696Abstract This specification covers the requirements for bare solid conductors made of tungsten and rhenium alloy thermoelements supplied in matched pairs. These thermoelements shall be suitable for use in either bead-insulated, bare-wire thermocouples, or in compacted metal-sheathed, ceramic insulated thermocouple material or assemblies. Unless otherwise noted, all information in this specification applies to both thermocouple combinations of tungsten-3 % rhenium versus tungsten-25 % rhenium (W3Re/W25Re) and tungsten-5 % rhenium versus tungsten-26 % rhenium (W5Re/W26Re; Type C). Thermoelements should meet specified physical, mechanical, thermoelectric, and compositional requirements. 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 the requirements for bare, solid conductor, tungsten and rhenium alloy thermoelements having diameters of 0.127 mm (0.005 in.) to 0.508 mm (0.020 in.) supplied in matched pairs. These thermoelements shall be suitable for use either in bead-insulated, bare-wire thermocouples, or in compacted metal-sheathed, ceramic insulated thermocouple material or assemblies. 1.2 This specification covers the thermocouple combinations of tungsten-3?% rhenium versus tungsten-25?% rhenium (W3Re/W25Re) and tungsten-5?% rhenium versus tungsten-26?% rhenium (W5Re/W26Re; Type C). All information applies to both combinations unless otherwise noted. 1.3 It is recognized that the alloys described are refractory and are not suitable for use at high temperatures in oxidizing atmospheres. All tests and processes described herein must be performed under conditions that are non-reactive to tungsten-rhenium alloys. 1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
ASTM Standards E8 Test Methods for Tension Testing of Metallic Materials E207 Test Method for Thermal EMF Test of Single Thermoelement Materials by Comparison with a Reference Thermoelement of Similar EMF-Temperature Properties E220 Test Method for Calibration of Thermocouples By Comparison Techniques E230 Specification and Temperature-Electromotive Force (EMF) Tables for Standardized Thermocouples E344 Terminology Relating to Thermometry and Hydrometry E452 Test Method for Calibration of Refractory Metal Thermocouples Using a Radiation Thermometer E988 Temperature-Electromotive Force (EMF) Tables for Tungsten-Rhenium Thermocouples E1751 Guide for Temperature Electromotive Force (EMF) Tables for Non-Letter Designated Thermocouple Combinations Keywords rhenium; thermocouple; thermoelement; tungsten ; ICS Code ICS Number Code 17.200.20 (Temperature-measuring instruments) DOI: 10.1520/E0696 ASTM International is a member of CrossRef. ASTM E696This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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