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ASTM B70-26

Standard Test Method for Change of Resistance With Temperature of Metallic Materials for Electrical Heating
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ASTM B70-26

Standard Test Method for Change of Resistance With Temperature of Metallic Materials for Electrical Heating

PUBLISH DATE 2026
PAGES 3
ASTM B70-26

1.1 This test method covers the determination of the change of resistance with temperature of metallic materials for electrical heating.

1.1.1 The test is only applicable over the temperature range under specified service temperatures.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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 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.

2.1 The change in resistance with temperature for heating element materials is a major design factor and may influence material selection. The measurement of this change is essential to ensure that heating elements perform within product design specifications.

2.2 This test method was designed to minimize the effect of different manufacturing processes on resistance change in product performance.

SDO ASTM: ASTM International
Document Number B70
Publication Date April 1, 2026
Language en - English
Page Count 3
Revision Level 26
Supercedes
Committee B02.10
Publish Date Document Id Type View
April 1, 2026 B0070-26 Revision
April 1, 2019 B0070-90R19 Revision
May 1, 2013 B0070-90R13 Revision
May 1, 2007 B0070-90R07 Revision
Jan. 1, 1995 B0070-90R01 Revision
Jan. 1, 1995 B0070-90R95E01 Revision