ASTM C1171-05
Standard Test Method for Quantitatively Measuring the Effect of Thermal Shock and Thermal Cycling on Refractories

Standard No.

ASTM C1171-05

Release Date

2005

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM C1171-05(2011)

Latest

ASTM C1171-16(2022)

Scope

This test method indicates the ability of a refractory product to withstand the stress generated by sudden changes in temperature.

Because the recommended furnace temperature of this cycling test is 1200°C (2190°F), this test method may not indicate the ability of a refractory product to withstand cycling at higher or lower temperatures, especially if the existing morphology of the refractory product changes.

This test method is useful for research and development, as well as for comparing refractory products. The precision should be considered when using this test for specification purposes.

Ruggedness tests found the following variables to be rugged:

temperature	+5°C
hot spacing	½ to 3/4in. (12.77 to 19 mm)
cold spacing	½ to 3/4 in. (12.77 to 19 mm)
center vs. end gripping of the bars
hot hold time	10 to 15 min
cold hold time	10 to 15 min
operator air speed	0 to 2 mi/h (0 to 3.2 km/h)
initially cold or heated samples
last in, first out (LIFO); or first in, first out (FIFO) removal from the furnace
sawed or original surface as tensile face during MOR testing
bar thickness	0.96 to 1.04 in. (24.5 to 26.4 mm)

1.1 This test method is used for determining the strength loss or reduction in continuity, or both, of prism-shaped specimens which are cut from refractory brick or shapes and subjected to thermal cycling.

1.2 The strength loss is measured by the difference in modulus of rupture (MOR) between uncycled specimens and the specimens subjected to thermal cycling.

1.3 The reduction in structural continuity is estimated by the difference in sonic velocity before and after thermal cycling.

1.4 The values stated in inch-pound units are to be regarded as the standard. The values stated in parentheses are for information only.

1.5This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

ASTM C1171-05 Referenced Document

• ASTM C133 Standard Test Methods for Cold Crushing Strength and Modulus of Rupture of Refractories*， 2024-04-19 Update
• ASTM C1419 Standard Test Method for Sonic Velocity in Refractory Materials at Room Temperature and Its Use in Obtaining an Approximate Young''s Modulus
• ASTM C607 Standard Practice for Coking Large Shapes of Carbon-Bearing Materials
• ASTM E4 Standard Practices for Force Verification of Testing Machines
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

ASTM C1171-05 history

• 2022 ASTM C1171-16(2022) Standard Test Method for Quantitatively Measuring the Effect of Thermal Shock and Thermal Cycling on Refractories
• 2016 ASTM C1171-16 Standard Test Method for Quantitatively Measuring the Effect of Thermal Shock and Thermal Cycling on Refractories
• 2015 ASTM C1171-15 Standard Test Method for Quantitatively Measuring the Effect of Thermal Shock and Thermal Cycling on Refractories
• 2005 ASTM C1171-05(2011) Standard Test Method for Quantitatively Measuring the Effect of Thermal Shock and Thermal Cycling on Refractories
• 2005 ASTM C1171-05 Standard Test Method for Quantitatively Measuring the Effect of Thermal Shock and Thermal Cycling on Refractories
• 1996 ASTM C1171-96(2003) Standard Test Method for Quantitatively Measuring the Effect of Thermal Shock and Thermal Cycling on Refractories
• 1996 ASTM C1171-96 Standard Test Method for Quantitatively Measuring the Effect of Thermal Shock and Thermal Cycling on Refractories