Strength vs. Hardness vs. Toughness - Engineering Stack Exchange Hardness is the measure of a material resistance to scratching, like it's hard to drill a hole into, or hard to sand Or diamond that can cut many surfaces but is hard to cut Toughness is the ability of material to resist cracking or breaking under stress Strength is the ability of material to withstand great tension or compression or other
heat treatment - Is hardened steel better than tough steel . . . In steel hardness is closely related to tensile strength so a hardened steel will have both high hardness and high tensile strength Toughness is a bit more difficult to quantify than strength but in general is the ability to resist impact and resistance to brittle fractures
Shore durometer type D to brinells - Engineering Stack Exchange I saw a video where a person was measuring hardness of a material with Shore durometer type D and was comparing it to steel The screen on durometer showed 96 5 HD and I was just wondering, how much
What is the significance of brittle materials and why do we use them? "Hardness is the question of how difficult it is to make an impression indention on a substance Brittleness is the question of how easy it is to break For example, Granite is a stone which is very hard but not brittle--it is hard to carve and also hard to break A plank of wood is not as hard as stone but is not very brittle
materials - Durometer and Shore - Engineering Stack Exchange The basic method for hardness measurement is using an indender and a standard force on a material surface and then measuring either the depth or the area of the imprint However, is happening with almost all hardness scales is that you cannot obtain meaningful results for all types of materials, for a given force and a specific indender
Difference between Stiffness (K) and Modulus of Elasticity (E)? "Hardness" - Hardness (antonym: softness) is a measure of the resistance to localized plastic deformation induced by either mechanical indentation or abrasion In general, different materials differ in their hardness Its usage is limited to the cases stated above
mechanical engineering - Potential Problems of Excessively Hard Shaft . . . $\begingroup$ "Hardness being a surface property may prevent surface scratches and wear, could it lead to any problems in general?" Hardness is not a surface property, but normally you only care about hardness at the surface, hence case hardened shafts exist which helps you retain the toughness of the bulk material underneath $\endgroup$ –
Surface Finish and Strength - Engineering Stack Exchange Hardness, as indicated by @kamran, will generally be impacted by compressive surface finishing techniques applied, making it harder in the process Stated in @kamran's answer as well, roughening will increase hardness since most roughening methods generally apply some compressive force to steel surfaces
At what temperature do I risk altering the structure of steel? The second consideration is the tempering temperature This only applies to steels which have been heat treated, generally cutting tools, dies, springs and certain other very high strength hardness parts The tempering range can vary between 180 and 300 C or up to 600C for high speed steels