What is the difference between strength and stiffness in a material?tccicomputercoaching.com

Definition:

Strength – The ability of the material to support a load without breaking (physical failure)

Stiffness – The ability of the material to distribute a load and resist deformation or deflection (functional failure)

Difference in Detail

Strength:

• A measure of the maximum load that can be placed on a material before it permanently deforms or breaks. Engineers often use this as yield stress, sy, as a measure of a material's strength.
• Strength is a ability of a material to withstand an applied load without getting plastically deformed or rupture, whereas Stiffness is the degree to which an object resists its deformation in applied load.

• Strength => Hard to be Broken

Stiffness:

• A measure of the amount of deflection that a load causes in a material. Engineers use a value called Young's modulus, E, for stiffness.
• Stiffness is given as Load per unit deflection.

• Stiffness =>Hard to be Band

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