Conversion between Shore(SH) Hardness and Mohs(MH) Hardness
Shore hardness and Mohs hardness are two main methods for measuring the hardness of substances. The conversion relationship between them is as follows:
I. Basic Concepts
- Shore hardness(SH): Also known as gravitational hardness, it is an index for measuring the hardness of a substance according to the deformation depth produced by the substance against gravity.
- Mohs hardness(MH): Also known as repulsive hardness, it is a testing method for calculating hardness by applying a indenter to the surface of an object and according to the height bounced back from the surface of the object.
II. Conversion Method
Based on the above two hardness testing methods, we can use the following formula to convert the relationship between Shore hardness and Mohs hardness :
Shore hardness (SH) = 2.871(MH)² – 2.406×(MH) + 0.226
That is, after obtaining the Mohs hardness of a certain substance, the Shore hardness can be calculated through the above formula.
III. Specific Applications
In practical applications, we mostly use Mohs hardness to measure the hardness of substances, but in specific occasions or for specific purposes, Shore hardness can also be used for measurement. For example, Shore hardness is mainly used to predict the plasticity and elasticity of metal materials and the wear performance of tool edges. In addition, since Shore hardness can accurately represent the value of materials, Shore hardness is often required to identify and measure the physical properties of materials when designing and manufacturing complex parts.
IV. Finally
Both Shore hardness and Mohs hardness are inductive testing methods used to detect the hardness and physical properties of substances. The conversion relationship between them can be obtained through the above formula. The measurement results of these two methods can accurately represent the physical properties of an object, so they are often used to identify and measure raw materials when designing and manufacturing complex parts.