Superduty Fireclay Brick definition

Superduty Fireclay Brick

Having pce above 33 with less than 1.0 percent linear shrink in the 1599 B0C (2910 B0F) reheat test, and less than 4.0 percent loss in panel spalling test preheated at 1649 B0C (3000 B0F).
Found on https://steelforge.com/literature/steelog-the-5000-word-metals-glossary/

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