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IndustryArena Forum > MetalWorking > MetalWork Discussion > D2 drawn down toooo long

Thread: D2 drawn down toooo long

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  1. 12-21-2007, 12:55 AM #1
    orionstarman
    orionstarman is offline Registered
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    D2 drawn down toooo long

    I put some 5/16 D2 plates in the draw down oven after heat treating and than forgot about them. Total time at 400 degrees was about 4 hours. Are the plates ruined?
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  2. 12-21-2007, 01:16 AM #2
    kn6za
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    d2

    How much lower is the hardness, than what you were trying to get?


    Andrew
    Andrew Abken
    www.drewtronics.net - PCB Cutters
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  3. 12-21-2007, 01:29 AM #3
    orionstarman
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    Well we just checked them and they are at 60 rockwell. I think we were shooting for 62 so they are not as bad as I thought they would be. This is the 2ed time that I've done this.

    Thanks
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  4. 12-21-2007, 01:42 AM #4
    kn6za
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    d2

    Yea, I remember the time I forgot to remove a 420ss plate from the oven at 1870deg - it was in for 10hrs not 1 hr like it should have been.

    I did not need to ask if the plate was any good, it nearly disinigrated!


    I doubt your plate suffered much from its long draw, if 60rc is acceptable I would think it to be just fine.


    Andrew
    Andrew Abken
    www.drewtronics.net - PCB Cutters
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