Read the Rockwell hardness number 15 seconds after removal of the major load. Corrections can be made for specimens with curved surfaces based on the radius of curvature. Typical Applications. Cemented carbides, thin steel, and shallow case-hardened steel. Copper alloys, soft steels, aluminum alloys, malleable iron. Steel, hard cast irons, pearlitic malleable iron, titanium, deep case-hardened steel, and other materials harder than HRB Thin steel and medium case-hardened steel and pearlitic malleable iron.
Cast iron, aluminum and magnesium alloys, bearing metals. Phosphor bronze, beryllium copper, malleable irons. Bearing metals and other very soft or thin materials. There are several Rockwell hardness scales which utilize different indenters and loads, and we are qualified to measure the Rockwell B and Rockwell C scales. When conducting Rockwell Hardness tests most metals are tested several times, and the average hardness value as well as the standard deviation are reported.
Hardness can vary across a sample, especially samples which have different thermal profiles such at welds, or samples which have experienced surface hardening treatments. Written by : Emilija Angelovska. G, Fundamentals of Materials Science and Engineering. User assumes all risk of use, damage, or injury. You agree that we have no liability for any damages.
What is Brinell Hardness? What is Rockwell Hardness? Brinell vs. Each method has its unique purpose, advantages and disadvantages. Author Recent Posts. Emilija Angelovska. Latest posts by Emilija Angelovska see all. Help us improve. Rate this post! Hakeem Md.
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