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

Show Complete Document History

Document Center Inc. is an authorized dealer of ASTM standards.
The following bibliographic material is provided to assist you with your purchasing decision:

Included in this current edition are the following subparts:

 1990 R13 EDITION - May 15, 2013
 1990 R19 EDITION - April 1, 2019



Want this as a site license?


1.1 This test method covers the determination of the change of resistance with temperature of metallic materials for electrical heating, and is applicable over the range of 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 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.

Significance and Use

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 as designed. This test method was designed to minimize the effect different manufacturing processes have on resistance change, thereby yielding results that are reproducible.


coefficient of resistance; heating elements; resistance change; resistors; temperature-resistance; ICS Number Code 77.040.01 (Testing of metals in general)

To find similar documents by ASTM Volume:

02.04 (Nonferrous Metals--Nickel, Cobalt, Lead, Tin, Zinc, Cadmium, Precious, Reactive, Refractory Metals and Alloys; Materials for Thermostats, Electrical Heating and Resistance Contacts, and Connectors)

To find similar documents by classification:

27.010 (Energy and heat transfer engineering in general)

77.040.01 (Testing of metals in general)

97.100.10 (Electric heaters)

This document comes with our free Notification Service, good for the life of the document.

This document is available in either Paper or PDF format.

Document Number


Revision Level

1990 R13 EDITION



Modification Type


Publication Date

May 15, 2013

Document Type

Test Method

Page Count

2 pages

Committee Number