Hardness:- A material ability to withstand frictional force, for example, diamond is extremely hard you can't easily scratch a diamond but here comes an interesting point although diamond is hard it is not tough you can shatter a diamond with a blow of a strong hammer. it means not every material which is hard is equally tough.
Strength:- It is the ability to resist deformation or say the amount of force necessary to deform a material body.the higher the force required for deformation higher the strength it bears.
Toughness:- It is defined as how well a material can resist fracture when force is applied it requires both strength and ductility, for example, take a silicon-based toy known as silly putty it did not break easily is not it a tough one.
apart from above discussions some material posses all those above properties like drill bits they are hard, tough and have good strength.
Now you are on verge of saying yourself a material engineer at least you can now describe materials in technical words
#hardness, #shubham chaurasiya, #toughness
