materials - Durometer and Shore - Engineering Stack Exchange Can someone help me understand durometer and shore hardness testing with relation to rubber hardness? My understanding is durometer measures hardness, shore is a different type of scale The image
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
What is the significance of brittle materials and why do we use them? We have studied that cast iron which is a brittle material is used in automobile cylinder block, head, housing flywheel etc If it is a brittle material then why it is used there? Another term that is confusing me is hardness How hardness is related to brittleness If a material is strong and hard, will it be brittle?
Surface Finish and Strength - Engineering Stack Exchange 0 There are a lot of different types of strength to describe steel (Compressive, tensile, yield, ultimate, fatigue, hardness, toughness, etc) Surface finish affects some of these strength parameters, while some others are independent of surface finish
Difference between Stiffness (K) and Modulus of Elasticity (E)? In Solid Mechanics, We can relate these K=AE L I am confused in these Both resist deformations when load is applied on it Is K constant like E is constant Another thing which is confusing is hardness which is the same (resists deformation on application of load)
Why are the processes called Precipitation Hardening and Solid . . . I can try to find a history of the terminology, but a very brief idea is that hardness and strength are closely related Also materials science and engineering concepts were often named long before the mechanisms behind them were discovered, let alone standardized Its the same reason why modulus of rupture is a measurement of brittle flexure strength, and not an elastic constant
At what temperature do I risk altering the structure of steel? If I have structural or tool steel that has been treated to some standard (ASTM, SAE, ISO -- e g , for hardness) but I don't know the details of the treatment, is there a "safe" temperature below w
materials - Work hardening? - Engineering Stack Exchange Hardness and tensile strength are closely related but elasticity is a pretty much independent property This is somewhat counter intuitive and often causes some confusion especially in the context of tempering steel