Iron-Lohs & Xiao Hardness Comparison
The hardness of materials is an important property that can affect the performance of a part or product. There are several different hardness tests or scales that are used to determine the hardness of a material. Two of the most popular tests are Iron-Lohs (IL) and Xiao (X). The Iron-Lohs scale is a popular method for hardening steels, while the Xiao scale is a newer hardness test that is used to measure a wide range of materials. This article will compare the two hardness tests and explain the differences between them.
Iron-Lohs Hardness Test
The Iron-Lohs (IL) hardness test was developed in 1930 and is commonly used to harden steels. It is based on a 5000lb plane bearing that is applied to the material surface, and then allowed to cool after being heated slightly. The hardness is indicated by a number that corresponds to the pressure applied to the surface. For example, a higher number indicates a higher degree of hardness. The Iron-Lohs scale ranges from 1 to 10, with 10 being the highest hardness.
Xiao Hardness Test
The Xiao hardness test was developed in the 1990s and is an advanced hardness test. It is based on the Load-Measuring Technique (LMT), which measures the displacement of a load sensing element when pressure is applied to the material surface. The hardness is indicated by a number that indicates the hardness of the material in MPa (megapascal), a unit of measurement that is used to measure pressure and strength. The Xiao scale ranges from 0 to 25, with 25 representing the highest hardness.
Differences between Iron-Lohs and Xiao Hardness Tests
The key difference between the Iron-Lohs and Xiao hardness tests is the way in which they measure hardness. The Iron-Lohs test is based on a plane bearing that is applied to the material surface and then allowed to cool, while the Xiao test is based on the Load-Measuring Technique (LMT). Additionally, the Iron-Lohs scale ranges from 1 to 10, while the Xiao scale ranges from 0 to 25.
The Iron-Lohs hardness test is a popular method for hardening steels, while the Xiao test is an advanced hardness test that is used to measure a wide range of materials. Both tests are used to determine the hardness of materials, and have their own advantages and disadvantages depending on the material being tested.
Conclusion
The Iron-Lohs and Xiao hardness tests are both used to determine the hardness of materials. The Iron-Lohs test is based on a 5000lb plane bearing, while the Xiao test is based on the Load-Measuring Technique (LMT). Additionally, the Iron-Lohs scale ranges from 1 to 10, while the Xiao scale ranges from 0 to 25. These tests have their own advantages and disadvantages depending on the material being tested, and each provide useful information about the hardness of a given material.
