Hardness number which does not depend on the ductility of metal_____________?
Correct answer: B. KNH
- A. VHN
- B. KNH
- C. RHN
- D. BHN
Explanation
The Knoop hardness test uses an elongated diamond indenter and is suitable for brittle materials, with its hardness value largely independent of ductility. Brinell and Rockwell measurements are more influenced by plastic deformation behavior.
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