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-   -   D70 fire brick (http://www.fornobravo.com/forum/f2/d70-fire-brick-6634.html)

bisland9 04-23-2009 10:31 AM

D70 fire brick
 
i have located some free used firebrick. they are 4.5 x 9 x 3 and have d 70 embossed on them. does anybody know what this means? also they have been outside uncovered for 15 years. i live in central canada and can get cold -30 f. to +100 f. does anyone know if they are they worth using?

thanks
bernie

jpar 04-23-2009 01:46 PM

Re: D70 fire brick
 
I think you have a duralite 70 firbrick manufactured by Chicago Firebrick - no longer in business. This is a 70 % alumina brick that is around 160 pcf. THese brick will take a long time to heat up, and a long time to cool down

dmun 04-23-2009 03:43 PM

Re: D70 fire brick
 
Nothing beats free. These are high-duty expensive bricks, and I wouldn't advise anyone to go out and buy them, but they will work fine. They are just a little harder to cut than the ones from the brickyard.

Good luck with your project - keep us posted.

bisland9 04-23-2009 07:39 PM

Re: D70 fire brick
 
thanks for the speedy replies. i have completed the hearth slab and hope to start on the brick hearth next month. i bought new low duty firebrick for the hearth and i think i will use the D 70 for the rest of the oven. thanks again for your help.

bernie


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