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Home/Questions/Q 114980
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Arun kumar
Arun kumar
Asked: June 15, 20212021-06-15T05:14:53+05:30 2021-06-15T05:14:53+05:30In: Physical Metallurgy & Heat treatment

What is hardness of material?

What is hardness of material?
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    4 Answers

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    1. Dr. Jay Desai PhD in Materials Science and Engineering
      2021-06-18T12:45:08+05:30Added an answer on June 18, 2021 at 12:45 pm

      Hardness means resistance to localised plastic deformation. Every material has an inherent tendency to oppose any change which it may encounter. So, when a material experiences plastic deformation causing force, it encounters it. This tendency of material to resist plastic deformation is called hardRead more

      Hardness means resistance to localised plastic deformation.

      Every material has an inherent tendency to oppose any change which it may encounter. So, when a material experiences plastic deformation causing force, it encounters it. This tendency of material to resist plastic deformation is called hardness. Hardness is usually of two types: Scratch Hardness and Indentation hardness. Scratch hardness is resistance to friction from sharp object and Indentation hardness is resistance to constant compression forces.

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    2. digbijaya igit Platinum⭐ GATE 2021 QUALIFIED
      2021-06-24T20:39:57+05:30Added an answer on June 24, 2021 at 8:39 pm

      Hardness is defined as the resistance to indentation. Or hardness usually implies a  resistance of material to permanent or plastic deformation. There are 3 general types of hardness measurements depending on the manner in which the test is conducted. Scratch hardness Indentation hardness Rebound haRead more

      Hardness is defined as the resistance to indentation. Or hardness usually implies a  resistance of material to permanent or plastic deformation. There are 3 general types of hardness measurements depending on the manner in which the test is conducted.

      1. Scratch hardness
      2. Indentation hardness
      3. Rebound hardness
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    3. Pk56mahato
      2021-06-24T16:37:41+05:30Added an answer on June 24, 2021 at 4:37 pm

      Hardness is defined as resistance to penetrate, resistance to abrasion, resistance to wear , which is caused by deformation.

      Hardness is defined as resistance to penetrate, resistance to abrasion, resistance to wear , which is caused by deformation.

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    4. C Patel Metallurgy Platinum⭐ GATE Metallurgy Coaching
      2022-05-11T09:02:43+05:30Added an answer on May 11, 2022 at 9:02 am

      Its resistance to plastic deformation at the surface level of a material.

      Its resistance to plastic deformation at the surface level of a material.

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