{"id":16203,"date":"2021-06-22T14:07:49","date_gmt":"2021-06-22T12:07:49","guid":{"rendered":"https:\/\/samatoolsgroup.com\/?p=16203"},"modified":"2024-09-11T15:18:56","modified_gmt":"2024-09-11T13:18:56","slug":"portable-or-bench-hardness-testers-the-challenge","status":"publish","type":"post","link":"https:\/\/samatoolsgroup.com\/en\/curiosity\/portable-or-bench-hardness-testers-the-challenge\/","title":{"rendered":"Portable or bench hardness testers? The challenge"},"content":{"rendered":"
In a survey among LinkedIn users, we asked different professionals whether they used hardness testers in their line of work.<\/p>\n
We received 126 answers as described here below:<\/p>\n
44% YES
\n23% NO
\n33% used them in the past.<\/p>\n
Of course, hardness testers are not all the same. And each one is suitable for a specific application. We invite you to keep reading to learn more about these non-destructive testing instruments.Click here<\/a><\/span><\/strong><\/span> to check the Linkedin poll.<\/p>\n Photo by www.canva.com<\/p><\/div>\n According to the famous encyclopedia Britannica<\/strong><\/a><\/span><\/span>, a hardness tester is a \u201cdevice that indicates the hardness of a material, usually by measuring the effect on its surface of a localized penetration by a standardized rounded or pointed indenter of diamond, carbide, or hard steel.\u201d<\/p>\n Simply put, hardness testers are non-destructive testing instruments<\/strong> that allow you to determine<\/strong>, based on the applicable standard, the value of hardness of different materials<\/strong>, including, but not limited to:<\/p>\n Photo by www.canva.com<\/p><\/div>\n The typical hardness test involves an object called indenter<\/strong> which is pressed on and into the surface of the material being tested<\/strong>.<\/p>\n The indenter must have specific dimensions and must be loaded with a specific pressure depending on the type of tester.<\/p>\n Afterwards, the hardness is determined by measuring the depth of the penetration or the area of the indentation.<\/strong> Measuring one or the other will depend on the type of hardness test<\/strong> being performed. The most common ones include:<\/p>\n Knowing the hardness of the materials used on a piece or structure is important for various reasons. First of all, hardness testing allows you to assess important properties such as strength, ductility and wear resistance.<\/strong><\/p>\n Therefore, with the information obtained, it is easy to determine whether the material is suitable for the application at hand or not<\/strong> and whether further surface treatment is necessary to achieve the desired results.<\/p>\n Also, it can be used to verify the quality of the material and determine if maintenance is required.<\/strong><\/p>\n As mentioned above, there are different hardness testers for different applications. So, let\u2019s take a look at the most common ones.<\/p>\n As the name suggests, these testers are based on the Leeb hardness test<\/strong> as defined in the ISO 16859 and ASTM A956 standards. It is a dynamic test method where the ratio of rebound velocity to impact velocity of a moving impact body is used to determine the hardness.<\/strong><\/p>\n Leeb hardness testers are usually employed for testing various metals and alloys<\/strong>, and they are a great choice when checking incoming and outgoing goods, for quality control activities, and maintenance of structures and workpieces subject to wear.<\/strong><\/p>\n Here at SAMA Tools<\/strong>, we offer 3 different Leeb hardness tester <\/strong>models\u00a0<\/strong>:<\/strong><\/p>\n In photo: user with Leeb hardness tester \u2013 SAP180<\/p><\/div>\n Similar to the previous type, these instruments are named after the hardness test that they perform, the Barcol test<\/strong>.<\/p>\n This test is usually used on softer materials such as aluminum, aluminum alloys and some plastics.<\/strong> It was previously known as Barber-Colman Impressor since Walter Colman developed this test as a portable method during the World War II.<\/p>\n The process uses the indenter or \u201cimpressor\u201d to press on the material and measure how deep the tip of it penetrates.<\/p>\n We offer 2 Barcol hardness tester models<\/strong> :<\/p>\n In photo: uder with Digital barcol hardness testers \u2013 SABA934P<\/p><\/div>\n This simple model of hardness testers allows to measure the hardness of soft materials such as soft steels, aluminum, brass and copper.<\/strong> Moreover, it can be applied on different geometries and very small thickness values.<\/p>\n The values obtained can be easily converted to the common scales, including Vickers, Rockwell and Brinell.<\/strong><\/p>\n We offer 3 versions<\/strong> of the Webster hardness tester:<\/p>\n The main difference is the range of thickness and diameter they can be applied on.<\/strong><\/p>\n In photo Webster hardness testers \u2013 SAMW<\/p><\/div>\n Shore hardness is defined as the resistance of a material to penetration from a spring-loaded needle-like indenter.<\/p>\n By definition, we can easily conclude that the process to perform a hardness test with a Shore hardness tester is very similar to the one with the Barcol tester.<\/strong><\/p>\n There are different scales for Shore testing,\u00a0 the most common ones being the Shore A scale for soft elastomers like rubber, and Shore D for hard elastomers and other polymers like thermoplastics and thermosets.<\/strong> This makes Shore hardness testers a great option for quality control activities in rubber and plastics industries and for maintenance on ring nuts and gaskets.<\/strong><\/p>\n We offer 3 different versions<\/strong> of the Shore hardness testers:<\/p>\n The last one in the list is the most powerful of all, since it can handle more than the two scales mentioned above, and it comes with many other interesting features.<\/p>\n We also offer special stands<\/strong> for more accurate and repeatable results, and Shore test blocks for verification and calibration purposes.<\/strong><\/p>\n In photo: user with Multifunctions shore digital hardness testers \u2013 SA6610<\/p><\/div>\n The most specialized hardness testers in the market are usually bench hardness testers, since they offer a higher accuracy and repeatability.<\/strong> Therefore, they are the favorite option for metrological laboratories<\/strong> and applications which require the maximum of these two aspects.<\/p>\n These testers work with the indentation principle by applying a constant load over a specific period of time on an indenter which is in contact with the sample. They can use indenters of different sizes, shapes and materials, thus providing the possibility to work with different standards and scales with the same device.<\/p>\n We offer 5 versions<\/strong> of bench hardness testers, some of them are manually operated and others which are motorized. The versions are:<\/p>\n All of our bench hardness testers come with a diamond cone indenter and corresponding test blocks.<\/p>\n In photo: Rockwell bench hardness testers \u2013 SAB150<\/p><\/div>\n According to the poll, most of the participants<\/strong> who claim to use it or have used it in the past, say they have used the bench hardness tester.<\/strong> This is followed by users of shore hardness testers and Leeb hardness testers. Last but not least are the Webster and Barcol hardness testers.<\/strong><\/p>\n The most common answers to what it was used for:<\/strong><\/p>\n Photo by www.canva.com<\/p><\/div>\n When selecting the best hardness tester for your needs, there are different things to consider. The most important are:<\/p>\n Photo by www.canva.com<\/p><\/div>\n If you want to see all the hardness testers<\/strong> that we offer and\u00a0 select the right one for your needs, just click here<\/a><\/span><\/span><\/strong><\/span>.<\/p>\n Instead, if you are not sure yet or have any doubts about hardness testers, we recommend\u00a0 you contact us and one of our specialists will gladly assist you.<\/p>\n <\/p>\nWhat are hardness testers?<\/h2>\n
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How is hardness measured?<\/h2>\n
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Why is hardness testing so important?<\/h2>\n
What are the different types of hardness testers?<\/h2>\n
Leeb Hardness Testers<\/h3>\n
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Barcol Hardness Testers<\/h3>\n
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Webster Hardness Testers<\/h3>\n
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Shore Hardness Testers<\/h3>\n
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Bench Hardness Testers<\/h3>\n
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So, which hardness tester is used the most?<\/h2>\n
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How can I select the best hardness tester for my needs?<\/h2>\n
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Video summary: Portable or bench hardness testers? The challenge<\/h3>\n