ASTM C491

Modulus of Rupture of Air-Setting Plastic Refractories

Five 9" x 4 1/2" x 2 1/2" or 3" bricks are prepared in a hydraulic press at 1000 psi. MOR is determined after drying and firing the specimens.

Specimen Preparation and Drying Shrinkage $270 per test of 5 specimens
Firing Shrinkage Same as ASTM C113
MOR Same as ASTM C133

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