The right rockwell hardness tester for sale helps you make the most accurate measurements of your metal alloys. This is a critical tool for many industries and is available in several models, from bench-mounted units to portable devices that can be used on the go. These devices offer a variety of test methods, including Brinell, Rockwell and Vickers. Choose a device that is ideal for your needs, and you can rest assured knowing that the results will be consistent.
The Rockwell Method
The Rockwell hardness tester uses a penetrating diamond cone and a load-measuring instrument to determine the hardness of the material. This method is most commonly used to measure hardened steel and other hard metals, but it can also be used on plastics and ceramics. The tests can take up to 60 seconds to complete, and the measurement is based on the depth of the indentation made by the diamond cone. This method is not recommended for cylindrical surfaces, and the results are prone to error due to the size of the indenter.
The Brinell hardness tester uses a steel ball indenter to mark the surface of a sample, and it is able to measure the diameter of the indentation. This method is more accurate than the Rockwell method, as it distributes pressure evenly over a large area of the sample surface. It is also a good choice for measuring the hardness of rough samples that would be difficult to handle with other testing methods. The test load is high, and the surface of the sample must be prepared correctly to avoid errors.
The Vickers hardness tester measures the force needed to produce a small indentation in the surface of the material being tested. This method is suitable for most materials, but it may not be accurate on very smooth or soft surfaces. It is a good choice for measuring hardness on thin materials or small precision parts, and it can be used in combination with the Rockwell or Brinell methods.
Grainger offers a wide selection of hardness testers, from traditional bench-top units that use the Brinell or Rockwell method to portable units that can be carried with you on the jobsite. These devices can be used in heat treat facilities, workshops and other locations where you need to perform hardness tests on various metal alloys. Choose a portable hardness tester that meets your needs, and you can rest assured knowing the results will be accurate.