Saturday, December 25, 2010

Module 6: Hardness Test

Dear Students

Answer the following questions.


1- List three most commonly used Hardens testing machines.


2- Explain the the test conditions for each one of the Brinell Hardness Numbers below:



  • 120 HBS 10/3000/15

  • 1800 HBW 10/3000/30

3- Calculate the Brinle hardness number for a steel specimen if the indentation diameter is 5.5 mm, indenter diameter is 12 mm, and the load is 50 KN. Write the full quote of the Brinell Hardness number.


Use the formula below:



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3 comments:

  1. h.yJanuary 2, 2011 at 9:05 PM

    ^^
    hazza yeslam

    11-06

    ReplyDelete
  2. h.yJanuary 2, 2011 at 9:17 PM

    1- brinell hardness test
    2-rockwell hardness test
    3-vickers hardness test

    120 HBS 10/3000/15

    indicates that a hardness number of 120 BHN was calculated using a 10mm

    1800 HBW 10/3000/30

    indicates that a hardness number og 1800 BHN
    was calculated using 10mm diameter

    3-

    (2X5200/12πX(12-10.6)
    =197.0489 kg/mm
    198HBS 12/5200/15

    Hazza yeslam
    11-06

    ReplyDelete
  3. UnknownJune 21, 2014 at 10:39 AM

    The hardness tester that you will find at PCE Instruments is used for determining surface hardness. dynapocket.net

    ReplyDelete

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