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Manufacturing Technology: Theory and Problems, Second Edition by D. K. Singh

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CHAPTER 2

Properties of Materials

PHYSICAL PROPERTIES OF MATERIALS
  • Physical properties do not involve mechanical forces. Important physical properties of a material include specific heat, density, specific gravity, thermal conductivity, melting point and electrical conductivity.

Specific heat

  • The specific heat of a material is defined as the quantity of heat required to raise the temperature of a unit mass of the material through unity.
  • For a material of mass m with rise in temperature Δt due to heat supplied Q, the specific heat is given as

     

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  • The SI unit of specific heat is Joule/Kg-K.
  • There are two types of specific heats, one at constant ...

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