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What's the meaning of strength?

  1. Jun 18, 2013 #1
    I am coming across definitions which says certain substances (like martensite) are hard but brittle. I can't understand the meaning.
    Brittle substances have yield strength closer to breaking strength. If something breaks/fails easily then how can it be hard..?
    Pls help me out with some numbers...
     
  2. jcsd
  3. Jun 18, 2013 #2

    mfb

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    It can be hard to compress the material - you need a large force for a tiny change in its shape/volume/...
     
  4. Jun 18, 2013 #3

    462chevelle

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    the harder they are the less flex they have and they will break easier to a point. its like mounting something up completely solid. its harder but more likely to break things because it cannot absorb vibration or impact as good. it just takes the force. so a certain force will be lower on something with more flexibility. I think I kind of rambled. but it makes sense to me
     
  5. Jun 18, 2013 #4

    SteamKing

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