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birdog4 07-22-2004 06:51 AM

sheared plate
Question for the mettalurgists:
Does tool steel work-harden at the edges where it has been sheared. O1 and D2 in particular?
If so, would it be prudent to anneal?
thanks bruce

Quenchcrack 07-22-2004 07:24 AM

Work Hardening
Work hardening is the act of crushing and distorting the crystal lattice so that dislocation movement is impeded. I would say that shearing would work harden the edges somewhat. If you are going to forge the steel, it will re-crystalize by the time it reaches a dull red and you need not worry about it. If you are grinding it, I doubt the work-hardened edge would cause you much trouble. However, heating it to a very dull red and slow cooling would reduce the hardness considerably without the problem of scale and carbide precipitation.

birdog4 07-22-2004 12:48 PM

Thanks QC
I may have access to some large plate 01 and wondered what I might run into withhaving it sheared. bruce

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