Fundamentally, hardness testing determines the resistance a material exhibits in response to the permanent deformation of another material’s penetration. If I take a piece of metal and rub something ...

This class presents a description of each hardness testing method, along with discussions on how to choose and perform a test, how to read hardness ratings, and how to prevent common errors. Hardness ...

Hard water is the type of water that has high mineral content (in contrast with soft water). Hard water minerals primarily ...

When designing metal parts, it's important to specify their hardness. However, many engineers have only a shaky understanding of what hardness actually is, or how it's measured. There are good reasons ...

Martensitic stainless steel is a good choice for a variety of applications because of its durability, strength, and corrosion resistance. The composition and properties of martensitic steel give it ...