Charpy V Notch Test Piece Gauges

  1. TechnicAl

    TechnicAl Member

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    Found these in a drawer. Cant remember how I came by them but they are for checking the dimesions of Charpy V Notch test pieces
    Im thinking they could be alloy steel so good for making a blade...a small one

    gauge 2.jpg gauge 1.jpg
     
    AndersK likes this.
  2. Tinbasherdan

    Tinbasherdan Bodger in chief

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    If you’d be willing to part with them they would be good to show my students
     
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  3. Brad93

    Brad93 M J B Engineering

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    Too nice to make into a knife!
     
    Anguz likes this.
  4. Maker

    Maker nEw mEmBeR

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    Sort of relevant: I've got a Charpy test specimen on my keys. :laughing:
    15963551237768025877546322954590.jpg
    We did it in first year, I thought it looked cool so I kept it, broke the corners and drilled a hole in it.
     
    Shox Dr likes this.
  5. Other Daniel

    Other Daniel Member

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    Agree.
    Far too nice, to be cut up.
     
  6. TechnicAl

    TechnicAl Member

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    It must have been a good one....they usually break in two

    I used to have a tensile test piece with a big slag trap in it....it was to remind my Apprentice of his first go at welding a test plate.
     
  7. Maker

    Maker nEw mEmBeR

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    I'd imagine the lab was designed such that it wouldn't break, so there'd be a big, obvious difference between that and the the sample cooled in liquid nitrogen.
     
  8. TechnicAl

    TechnicAl Member

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    Ive seen them stop the hammer even when frozen.......usually something like Inconel

    We actually made some mild steel rods that would stop the hammer at -40oC....now that is unusual. We used cerium (mischmetal) as an ingredient and that coated any inclusion and change the shape to globular....we really thought we were onto something, until we started seeing cracks....the cerium combined with hydrogen and formed the cracks...
     
    Maker likes this.
  9. TechnicAl

    TechnicAl Member

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    Students of what subject?
     
  10. Tinbasherdan

    Tinbasherdan Bodger in chief

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    Engineering from straight out of school up to HND
     
  11. TechnicAl

    TechnicAl Member

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    Send me your address and I will post them....Im on holiday though for a while
     
    mtt.tr likes this.
  12. Tinbasherdan

    Tinbasherdan Bodger in chief

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    You’re a good man. Funnily enough one of the units in delivering this year the students have to do a write up on the Charpy testing so it will be good to have some physical items to put alongside the usual videos and powerpoints :)
     
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