Foundry Castings

[Delwin D Fandrich]

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  ----- Original Message -----=20
  From: Paul Chick (EarthLink)=20
  To: pianotech@ptg.org=20
  Sent: August 27, 2002 7:14 PM
  Subject: Re: Foundry Castings


  Alan
  Brittle cast was for low stress, low cost castings.  I'm sorry I can't =
relate any specific formulas.    Some cast machined very well, while =
other parts were a head ache. =20
The brittle cast was probably gray iron--lots of carbon. That is why =
gray iron machines easily. It is also why it breaks so readily.

Del

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