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This specification covers thermal insulating bricks made from fire clay that are used as backup insulation for refractory furnace linings of boiler furnaces. The bricks shall be composed of heat-resistant materials that have been burned or fired to produce the desired density, strength, and structure. Representative bricks shall be tested, and shall conform accordingly to specified values of bulk density, modulus of rupture, and reheat change.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers two types of thermal insulating brick for industrial or marine boiler furnaces. Type I is a special, 2500°F (1371°C) maximum service temperature, insulating firebrick that is used as backup insulation for refractory furnace linings. Type II is a standard insulating brick that, in general, is used where there may be direct contact with combustion gases, such as forge and stress relieving furnaces.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C133 Test Methods for Cold Crushing Strength and Modulus of Rupture of Refractories
C134 Test Methods for Size, Dimensional Measurements, and Bulk Density of Refractory Brick and Insulating Firebrick
C155 Classification of Insulating Firebrick
C210 Test Method for Reheat Change of Insulating Firebrick
D1974/D1974M Practice for Methods of Closing, Sealing, and Reinforcing Fiberboard Boxes
D3953 Specification for Strapping, Flat Steel and Seals
D4727/D4727M Specification for Corrugated and Solid Fiberboard Sheet Stock (Container Grade) and Cut Shapes
D5118/D5118M Practice for Fabrication of Fiberboard Shipping Boxes
D6251/D6251M Specification for Wood-Cleated Panelboard Shipping Boxes
D6880/D6880M Specification for Wood Boxes
Military StandardsMIL-STD-129 Marking for Shipment and Storage MIL-STD-147 MIL-STD-2073-1 Standard Practice for Military Packaging
ASQ DocumentANSI/ASQ Z1.4 Sampling Procedures and Tables for Inspection by Attributes
ICS Number Code 81.080 (Refractories)
UNSPSC Code 31371108(Fire clay brick)
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ASTM F1312-19, Standard Specification for Brick, Insulating, High Temperature, Fire Clay, ASTM International, West Conshohocken, PA, 2019, www.astm.orgBack to Top