Newman Red clay fired test bars at a range of temperatures
Friday 19th September 2003
New is a high temperature red burning insight-live.com/glossary/229">fireclay. These fired test bars show how high the iron content is, turning it bright red at all temperatures, even cone 10R (top bar). Other bars are cone 11, 10, 9 and 8 oxidation (top to bottom). Notice it does have some soluble salts that darken the color in reduction.
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