ASTM C133-97Standard Test Methods for Cold Crushing Strength and Modulus of Rupture of Refractories
ASTM C133-97 outlines standardized test methods for determining the cold crushing strength and modulus of rupture of refractory materials. These mechanical strength properties are critical indicators of a material's ability to withstand mechanical stresses and loads in various high-temperature industrial applications. The standard ensures consistency and reliability in assessing refractory performance, which is essential for materials used in furnaces, kilns, and other thermal processing equipment.
The cold crushing strength test measures the maximum compressive load a refractory specimen can bear before failure, while the modulus of rupture test determines the material's resistance to bending or flexural stresses. Both tests are performed under ambient (cold) conditions to provide baseline mechanical strength characteristics. Compliance with ASTM C133-97 helps manufacturers, engineers, and researchers evaluate and select refractory materials suitable for demanding operational environments.
