2010 Almen Strips Consistency Test Results Available from Electronics Inc.

August 24, 2010 - Mishawaka, Indiana. Saturation curves are only as dependable as the strips used to perform the test. If your strips are not consistent in hardness and thickness, your tests won't be accurate.

That's why, before we launched our Electronics Inc. brand of strips in 2007, we began consistency testing on our Almen strips to track their performance and to document that our strips were manufactured under conditions more stringent than SAE J442 specifications. Our tests prove that EI strips are consistent in hardness and thickness from lot to lot, from year to year.

Results from tests conducted in January, May, and July, 2010 are available in easy-to-read histograms. An analysis of the data, specifically the mean values, verifies the consistency of the EI strips—the overall range for all the material lots tested is only .0006 inches. In addition, the small values for the standard deviations confirm the consistency within individual lots. Finally, using a typical peening range of .004 inches, the Cp and Cpk values provide the customer with complete confidence in the accuracy of the peening process. The report also includes the results of performance tests conducted in 2007, 2008, and 2009.

Download our performance data in easy-to-read histograms for EI Almen strips produced in 2007, 2008, 2009 and 2010.