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
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
How do you plot a relation between hardness and strain How do I plot the relation between hardness of a material and compressive strain knowing the stress-strain curve and indentation size in Brinell's hardness test Skip to main content Stack Exchange Network
What material property (Youngs modulus, HRC hardness, Max yield . . . Given similar strength and hardness spec, materials that work-harden can be much worse to work with If milling or drilling, some materials form nasty chips compared to others Some have a wear-resistant microstructure (grains of carbides or silicons) and hence eat up the cutting tool faster than others
Why are the processes called Precipitation Hardening and Solid . . . Hardness and strength commonly have a positive correlation as the mechanisms which increase a material's hardness typically also increase the material's strength Toughness typically has a negative correlation to hardness Toughness is a measure of a material's ability to resist fracture under load
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
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
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
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
What is the Brinell hardness of ATSM A786 steel? One can get a pretty good estimate of the ( minimum ) hardness from conversion charts For example : a minimum tensile of 60 ksi corresponds to a Brinell of about 105 ; a minimum tensile of 100 ksi corresponds to a BHN of 200 The yield strengths do not correlate as well to hardness