Fire brick identification from markings

[docweathers]

I can get a great deal on some radius fire bricks, but I don't know what they are or how useful they might be. Most are about 9 inches long and 2 5/8s to 3 inches thick and almost 4 inches wide.

They have the following markings:
Mo Rex 48-57
AZTEX 108-117
AZTEX 36-45
JB 108-117
JBF 86-105

Does anyone know what these markings mean?

Thanks Larry

[larrycooper]

Re: Fire brick identification from markings

I just bought same size bricks - looks like they are going to be perfect for dome construction. I was able to contact manufacturer to find out alumina content - didn't want heavy duty bricks, couldn't find any info on your bricks in quick search - good luck

[jpar]

Re: Fire brick identification from markings

I'm not sure of the names, but the numbers refer to the ID and OD that can be formed from these brick