| In the structural steel engineering and steel trade industry, the tensile strength is of particular importance for the selection of materials and for material sorting tests. Zwick GmbH & Co KG, Germany, offers its new ultrasonic contact impedance tester, model MIC 10, that provides information about mechanical properties of steel and their resistance to wear and about ageing processes on metal parts. The test indentation of the Vickers diamond on the material surface is measured electronically and is directly displayed digitally as hardness value without optical evaluation via microscope. This method allows quick and comfortable measurements: Simply attach the probe and read the measured value.
Available for different work piece surfaces, are measuring probes with different test forces: both for finished surfaces and for coarse-grained materials or for rougher surfaces. The operation is simple and practice-oriented. Press the corresponding key to select whether an individual value or the current arithmetic average value is to be displayed after each measurement. Doubtful individual results can be easily corrected without interrupting the series of measurements. Alarm thresholds warn the user optically and acoustically of critical values. The MIC 10 allows an automatic conversion according to DIN 50150 and ASTM E 40 into Vickers, Brinell, Rockwell C and B.
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