The basic principle of the Webster Hardness Tester is that press a certain shape chilled indenter into the surface of specimen under the action of a standard spring test force. It is defined that every 0.01mm indentation depth is one Webster hardness unit. The hardness of material and the indentation depth are in inverse proportion. The smaller the indentation depth is, the higher the hardness value is, while the bigger the indentation depth is, the smaller the hardness value is.
Computational Formula:
HW=20-L/0.01
In the formula:
HW— The Webster hardness symbol
L— Extension length of the indenter, that is the indentation depth pressed into the specimen /mm
0.01— Defined value/mm
Indication of hardness value:
If the indentation depth of indenter is 0.05mm, the dial head will point at 15 scale. It is indicated that HW=20-5=15 unit hardness value. Write it before hardness symbol, that is 15HW.
Hi, I'm Joanna Zhao, the Import & Export Manager of Shenyang TX Testing Instruments Inc. I've been with TX Testing for 15 years, gaining hands-on experience by closely observing the production process and personally assembling and testing our portable hardness testers. This has deepened my technical understanding and strengthened my confidence in the industry's development. With this foundation, I provide professional support, feasibility analyses, and customized solutions to meet diverse customer needs, offering one-stop services that ensure efficiency and satisfaction.
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