Insulating firebrick (IFB) are classified by their bulk density and reheat change (see Classification C 155). This test method defines thermal stability by measurement of IFB’reheat change following 24 h at a test temperature.

Since this test exposes the entire sample to an isothermal temperature condition, the user should be aware that most applications for IFB involve a thermal gradient which may cause the IFB’dimensions to change differentially.

1. Scope

1.1 This test method covers the determination of the permanent linear (and volume) change of insulating firebrick upon reheating under prescribed conditions.

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

1.3 This 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.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

C24 Test Method for Pyrometric Cone Equivalent (PCE) of Fireclay and High Alumina Refractory Materials

C155 Classification of Insulating Firebrick

E230 Specification and Temperature-Electromotive Force (EMF) Tables for Standardized Thermocouples

E1256 Test Methods for Radiation Thermometers (Single Waveband Type)

Keywords

insulating firebrick; permanent linear change; refractories; reheat change;

ICS Code

ICS Number Code 81.080 (Refractories)

Citing ASTM Standards

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