mechanical engineering - How do I determine what hardness to change the . . . The steel tire could easily be any hardness you want It would be poor judgement to mess with the rolling element bearing hardness The heat-treatment has been developed over decades One factor is the residual compressive stresses developed on the surface ( by New Departure years ago) to significantly extend fatigue life
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
strength - What is the physical reasoning behind metal becoming . . . The effects of heating-quenching a metal is explained below Transformation hardening is the heat-quench-tempering heat treatment cycle addressed earlier in this article It's used to adjust strength and ductility to meet specific application requirements There are three steps to transformation hardening: Cause the steel to become completely austenitic by heating it 50 to 100 degrees F above
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)
mechanical engineering - Metal monocrystalline structures and tempering . . . The size, shape, layout, and many other properties of these grains has a considerable impact on the macro-scale properties of the metal, e g it's toughness, rigidness, tensile strength, hardness, and all the other wonderful properties of metals
heat treatment - Is hardened steel better than tough steel . . . 3 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
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