Measuring the Electrical Conductivity of Nonferrous Metals

Paul N. Gardner Co. introduces the Sigmascope SMP350 electrical conductivity measuring instrument.

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Paul N. Gardner Co. introduces the Sigmascope SMP350 electrical conductivity measuring instrument. According to the company, electrical conductivity is an important material property that provides information not only about a metal's ability to conduct electrical currents but also about its composition, micro structure and/or mechanical properties. The Sigmascope SMP350 is designed to quickly determine the electrical conductivity of any non-magnetic metal with precision and accuracy.

The instrument measures the electrical conductivity using the phase-sensitive eddy current method, which is approved by both DIN EN 2004-1 and ASTM E 1004 for determining conductivity. This kind of signal evaluation allows for contact-free determination of a substrate's electrical conductivity, the company says, even under paint or plastic coatings up to 500 µm thick. This method is also said to minimize the influence of surface roughness.

Applications include assessing hardness and strength of heat-treated materials, inspecting for heat damage, material fatigue and cracks, estimating phosphorous content in copper, tracking precipitation processes, and for testing the homogeneity of alloys.

For more information, visit gardco.com.