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Standard Practice for Determining Electrical Conductivity Using the Electromagnetic (Eddy-Current) Method
STANDARD published on 10.8.1999
Designation standards: ASTM E1004-99
Note: WITHDRAWN
Publication date standards: 10.8.1999
SKU: NS-40101
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM
Keywords:
Absolute coil method, Aluminum alloys-electrical conductors, Aluminum electrical conductors, Austenitic steel-stainless steel, Bronze, Calibration-metals/alloys instrumentation, Coils, Communication cable, Copper-electromagnetic testing, Copper alloy wire-electrical conductors, Copper electrical conductors, Copper electrical conductors-copper-clad steel, Corrosion, Current measurement, Depth of penetration, Electromagnetic (eddy current) testing, Magnesium alloys
1. Scope | ||||||||||||||
1.1 This test method describes a procedure for measuring the electrical conductivity of nonmagnetic metals using the electromagnetic (eddy current) method. The procedure has been written primarily for use with commercially available electrical conductivity instruments. General purpose eddy-current instruments may also be used for electrical conductivity measurements but will not be addressed in this test method. 1.2 This test method is applicable to metals that have a flat or slightly curved surface, and metals that may have a thin nonconductive coating. 1.3 Eddy-current measurements of electrical conductivity may be used in the sorting of metals with respect to variables such as: type of alloy, aging, cold deformation, heat treatment, effects associated with nonuniform heating or overheating, and effects of corrosion. The usefulness of tests of these properties is dependent on the amount of electrical conductivity change caused by a change in the specific variable. 1.4 Electrical conductivity, when measured by eddy-current instruments, usually is expressed as a percentage of the conductivity of the International Annealed Copper Standard (IACS). The conductivity of the Annealed Copper Standard (100% IACS) is defined to be 0.58 X 108 S/m at 20°C. 1.5 This standard does not purport to address the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
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