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-   -   Optimal hearth surface material for high heat? (http://www.fornobravo.com/forum/f8/optimal-hearth-surface-material-high-heat-6633.html)

scpizza 04-23-2009 09:41 AM

Optimal hearth surface material for high heat?
 
I'm looking for the optimal hearth firebrick or slab material for high heat pizza baking.

At 900F+, Fibrament (thermal conductivity of ~0.8 W/mK) burns the bottoms before the top is done. K23 insulating firebrick (thermal conductivity of ~0.2 W/mK) leaves the bottoms underdone, and also is dusty and crumbly.

I haven't tested them, but standard duty firebricks all have thermal conductivity >1 so it would seem they would also burn bottoms at 900F+.

I believe I need a food safe material between 0.2 and 0.8 W/mK that could handle abrasion from a pizza peel.

Terra cotta is one potential material with thermal conductivity in that range. I was also wondering if the higher density insulating firebricks like K32 at ~0.5 W/mK would work.

DrakeRemoray 04-23-2009 10:15 AM

Re: Optimal hearth surface material for high heat?
 
Most of us use standard duty firebrick. If you want the "best" overall, you should probably consider a refractory italian oven imported by forno bravo. The Italians know what works for pizza...


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