Strength vs. Hardness vs. Toughness - Engineering Stack Exchange 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 forces Like a steel cable that can support great tension
Difference between Stiffness (K) and Modulus of Elasticity (E)? Stiffness (F=Kx) is the extent to which an object resists deformation in response to an applied force Elastic Modulus (E=Stress Strain) is a quantity that measures an object or substance's resista
heat treatment - Is hardened steel better than tough steel . . . Toughness is a bit more difficult to quantify than strength but in general is the ability to resist impact and resistance to brittle fractures Ductility plays a part in toughness as it tends to help a material to resist crack propagation For simple steels heat treating is usually a balance between hardness and toughness
mechanical engineering - What is the impact toughness for some common . . . The problem is that there is no absolute material property which generally describes material toughness in the same way that, for example, yield stress describes strength As mentioned in the comments charpy testing allows meaningful comparison between bulk materials but is less useful in terms of actual calculations of real world performance
Why are the processes called Precipitation Hardening and Solid . . . Toughness is a little more difficult to quantify than strength, as there are many ways for a material to to be loaded to failure and for fracture to occur Some common indicators of toughness are impact resistance (charpy is a common standard test), fracture resistance resistance to crack growth (plain-strain fracture toughness is a common test
materials - Work hardening? - Engineering Stack Exchange Contrary to popular belief springs are not heat treated to make them more elastic but to improve their strength, this increases the extent to which they can deflect without deforming but not their elastic modulus ans so called 'spring temper' is a balance between ultimate strength and toughness and has no bearing on the spring constant itself
materials - Brittle = highly stiff but not very strong - Engineering . . . Tough is measured with impact toughness or fracture toughness, and the measure is related to energy (not stress) In that sense, you can have a material that its strong but not tough, or tough but not strong Following I have a matrix with toughness and strength and examples (in the parentheses are edible materials just because I am a glutton)