ASTM E1159-15(2020)e1

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.
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Designation: E1159 −15 (Reapproved 2020) An American National Standard
Standard Specification for
Thermocouple Materials, Platinum-Rhodium Alloys, and
Platinum
This standard is issued under the fixed designation E1159; 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.
ε NOTE—Added units statement to Section 1 and updated language of 4.1.6, 5.2, 5.3 – 5.8, 5.8.2, 5.8.3.2, 6.2, and 7.2
editorially in November 2020.
1. Scope mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.1 This specification covers non-insulated platinum-
rhodium alloys (weight percent composition), and platinum
2. Referenced Documents
thermoelements that meet the requirement of Specification
2.1 The following documents of the issue in force on the
E230/E230M and NIST Monograph 175.
dateofmaterialpurchaseformapartofthisspecificationtothe
1.2 This specification does not cover platinum and
extent referenced herein.
platinum-rhodium materials, that require a higher purity than
2.2 ASTM Standards:
specified in 5.1, such as used for temperature coefficient of
B561 Specification for Refined Platinum
resistance (TCR) measurements or standards type calibration.
B616 Specification for Refined Rhodium
For requirements of this superior quality, it is suggested that
E207 Test Method forThermal EMFTest of SingleThermo-
suppliers of precious metals be contacted.
element Materials by Comparison with a Reference Ther-
1.3 The values stated in SI units are to be regarded as
moelement of Similar EMF-Temperature Properties
standard. The values given in parentheses are mathematical
E220 Test Method for Calibration of Thermocouples By
conversions to inch-pound units that are provided for informa-
Comparison Techniques
tion only and are not considered standard.
E230/E230M Specification for Temperature-Electromotive
1.4 This standard does not purport to address all of the
Force (emf) Tables for Standardized Thermocouples
safety concerns, if any, associated with its use. It is the
E344 Terminology Relating to Thermometry and Hydrom-
responsibility of the user of this standard to establish appro-
etry
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use. 3. Terminology
1.5 This international standard was developed in accor-
3.1 Definitions:
dance with internationally recognized principles on standard-
3.1.1 The definitions given in Terminology E344 apply to
ization established in the Decision on Principles for the
terms used in this specification.
Development of International Standards, Guides and Recom-
3.2 Definitions of Terms Specific to This Standard:
3.2.1 thermocouple type, n—a nominal thermoelectric class
of thermoelement materials that, used as a pair, have a
This specification is under the jurisdiction of ASTM Committee E20 on standardized relationship and tolerance between relative See-
Temperature Measurement and is the direct responsibility of Subcommittee E20.13
beck EMF and temperature, physical characteristics, and an
on Thermocouples - Materials and Accessories Specifications.
assigned type letter designator and color code.
Current edition approved Nov. 1, 2020. Published December 2020. Originally
approved in 1987. Last previous edition approved in 2015 as E1159 – 15. DOI:
10.1520/E1159-15R20E01.
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“Temperature-Electromotive Force Reference Functions and Tables for the For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Letter-Designated Thermocouple Types Based on the ITS-90,” NIST Monograph contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
175 and Supplement 1. Available from NIST, U.S. Dept. of Commerce, Standards volume information, refer to the standard’s Document Summary page on
Gaithersburg, MD 20899. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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E1159 − 15 (2020)
3.2.1.1 Discussion—Letter designators and color codes are diameter shall be supplied in the hard-drawn drawn temper
defined in the United States by ANSI/ASTM E230/E230M. unless otherwise specified in the ordering information.
Descriptions of letter designators and color codes may also be
5.5 Diameter—Sizesmayrangefrom0.05mm(0.002in.)to
found in ASTM MNL12.
1.5mm(0.060in.).Requiredsizeshallbestatedintheordering
information. The supplier’s practice on tolerance shall apply
4. Ordering Information
unless otherwise stated in the ordering data (4.1.3). Any
4.1 Orders for material under this specification shall include
localizedneckingorbulgingoftheconductorbeyondtolerance
the following:
limits shall be cause for rejection.
4.1.1 ASTM designation and date of issue,
4.1.2 Thermocouple type (3.2.1), NOTE 1—Tolerances may vary from supplier to supplier.
4.1.3 Thermoelement diameter and tolerance (5.5),
5.6 Length—The quantity of material supplied shall meet
4.1.4 Annealing requirements (5.4),
the requirements of the ordering data. Only a single continuous
4.1.5 Quantity required (5.6, 5.7),
length may be placed on any one spool. Splicing of wires is
4.1.6 Specified standard or special tolerance for the initial
prohibited.
value of EMF versus temperature,
5.7 Weight—The purchaser may request material by weight
4.1.7 Calibration requirement (5.8),
(grams or troy ounces) instead of length. All other require-
4.1.8 Chemical analysis (7.2.1),
ments of this section shall be met. If weight is specified, a
4.1.9 Certified test results (7.2.2), and
statement of weight/unit length accurate to within 1 % shall be
4.1.10 Statement of compliance (7.2.3).
supplied for each item.
5. Requirements
5.8 Thermocouple Calibration—Sample the
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