ASTM C1558-16 - 1.3.2016
 
Significance and Use

4.1 This guide defines the principal elements of information, which are considered important and worth recording and storing permanently in computerized databases. Sufficient information is provided in this guide to enable the user to construct a database structure suitable for the intended application involving thermal insulation.

4.2 Because of increased activity in building computerized materials databases and to maintain uniformity and ease of data comparison and interchange, these formats provide for the inclusion of specific elements of thermal transmission test data in databases.

4.3 This guide has no implication on data required for materials production or purchase. Reporting of actual test results shall be as described in the actual materials specification or as agreed upon between the vendor and purchaser.

4.4 The suggested set of units for the recommended standard format given in this guide is SI. This guide, however, does not preclude other sets of units, such as inch-pound (IP).

 
1. Scope

1.1 This guide provides recommended formats for the recording of thermal transmission test data for thermal insulation and similar materials for inclusion in computerized material property databases. From this information, the database designer is able to construct the database dictionary preparatory for development of a database schema.

1.2 This guide is applicable to thermal transmission test data obtained from standard test methods that cover planar and radial specimen geometries.

1.3 This guide is not intended for thermal transmission data obtained for thermal insulation assemblies or systems (that is, heat transmission coefficients for walls, roofs, ceilings, and floors).

1.4 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 requirements prior to use.

 
2. Referenced Documents

C516-19

Standard Specification for Vermiculite Loose Fill Thermal Insulation

C518-21

Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus

C168-25

Standard Terminology Relating to Thermal Insulation

C1427-26

Standard Specification for Extruded Preformed Flexible Cellular Polyolefin Thermal Insulation in Sheet and Tubular Form

C1114-06(2019)

Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Thin-Heater Apparatus

C764-26

Standard Specification for Mineral Fiber Loose-Fill Thermal Insulation

C991-25a

Standard Specification for Flexible Fibrous Glass Insulation for Metal Buildings (Includes all amendments and changes 5/19/2025).

C1014-26

Standard Specification for Spray-Applied Mineral Fiber Thermal and Sound Absorbing Insulation

C1029-25

Standard Specification for Spray-Applied Rigid Cellular Polyurethane Thermal Insulation

C1044-24

Standard Practice for Using a Guarded-Hot-Plate Apparatus or Thin-Heater Apparatus in the Single-Sided Mode

C1045-19(2026)

Standard Practice for Calculating Thermal Transmission Properties Under Steady-State Conditions

C1071-25

Standard Specification for Fibrous Glass Duct Lining Insulation (Thermal and Sound Absorbing Material)

C1086-20(2025)

Standard Specification for Glass Fiber Mechanically Bonded Felt Thermal Insulation

C665-24

Standard Specification for Mineral-Fiber Blanket Thermal Insulation for Light Frame Construction and Manufactured Housing

C726-24

Standard Specification for Mineral Wool Roof Insulation Board

C728-17a(2022)

Standard Specification for Perlite Thermal Insulation Board (Includes all amendments and changes 4/4/2022).

C739-25

Standard Specification for Cellulosic Fiber Loose-Fill Thermal Insulation

C745-92(1999)

Standard Test Method for Heat Flux Through Evacuated Insulations Using a Guarded Flat Plate Boiloff Calorimeter (Withdrawn 2008)

C533-17(2023)

Standard Specification for Calcium Silicate Block and Pipe Thermal Insulation

C1631-08

Standard Specification for Cellular Polypropylene Thermal Insulation

C1676-08

Standard Specification for Microporous Thermal Insulation

C1685-15(2021)

Standard Specification for Pneumatically Applied High-Temperature Fiber Thermal Insulation for Industrial Applications

C1728-25a

Standard Specification for Flexible Aerogel Insulation (Includes all amendments and changes 12/17/2025).

Thermal Insulation, Determination of Steady-State Thermal Resistance and Related PropertiesHeat Flow Meter Apparatus Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.

Thermal InsulationDetermination of Steady-State Thermal Resistance and Related PropertiesGuarded Hot Plate Apparatus

ISO8497

Thermal InsulationDetermination of Steady-State Thermal Transmission Properties of Thermal Insulation for Circular Pipes

ISO8990

Thermal InsulationDetermination of Steady-State Thermal Transmission PropertiesCalibrated and Guarded Hot Box

C1482-24e1

Standard Specification for Polyimide Flexible Cellular Thermal and Sound Absorbing Insulation (Includes all amendments and changes 4/23/2024).

C1484-10(2026)

Standard Specification for Vacuum Insulation Panels

C1534-26

Standard Specification for Flexible Polymeric Foam Sheet Insulation Used as a Thermal and Sound Absorbing Liner for Duct Systems

C1594-23

Standard Specification for Polyimide Rigid Cellular Thermal Insulation

C534-07

Standard Specification for Preformed Flexible Elastomeric Cellular Thermal Insulation in Sheet and Tubular Form

C549-23

Standard Specification for Perlite Loose Fill Insulation

C552-22

Standard Specification for Cellular Glass Thermal Insulation

C553-24

Standard Specification for Mineral Fiber Blanket Thermal Insulation for Commercial and Industrial Applications

C578-23

Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation

C592-24

Standard Specification for Mineral Fiber Blanket Insulation and Blanket-Type Pipe Insulation (Metal-Mesh Covered) (Industrial Type)

C547-26

Standard Specification for Mineral Fiber Pipe Insulation

C610-17(2023)

Standard Specification for Molded Expanded Perlite Block and Pipe Thermal Insulation

C612-25

Standard Specification for Mineral Fiber Block and Board Thermal Insulation

C656-17(2023)

Standard Specification for Structural Insulating Board, Calcium Silicate

C1126-24

Standard Specification for Faced or Unfaced Rigid Cellular Phenolic Thermal Insulation

C1149-23

Standard Specification for Self-Supported Spray Applied Cellulosic Thermal Insulation

C1289-26

Standard Specification for Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board

C1290-16(2021)

Standard Specification for Flexible Fibrous Glass Blanket Insulation Used to Externally Insulate HVAC Ducts

C1363-24

Standard Test Method for Thermal Performance of Building Materials and Envelope Assemblies by Means of a Hot Box Apparatus

C1410-17(2023)

Standard Specification for Cellular Melamine Thermal and Sound-Absorbing Insulation

C196-00

Standard Specification for Expanded or Exfoliated Vermiculite Thermal Insulating Cement

C208-22

Standard Specification for Cellulosic Fiber Insulating Board

C177-19(2026)

Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Guarded-Hot-Plate Apparatus

C195-26

Standard Specification for Mineral Fiber Thermal Insulating Cement

C335-05a

Standard Test Method for Steady-State Heat Transfer Properties of Pipe Insulation

C449-C449M-00

Standard Specification for Mineral Fiber Hydraulic-Setting Thermal Insulating and Finishing Cement