ASTM C1728-12 - 15.1.2012
 
1. Scope

1.1 This specification covers the classification and performance of flexible aerogel thermal insulation. This will cover the range of continuous exposure operating temperatures from -321°F (-196°C) up to 1200° F (649°C).

1.2 For satisfactory performance, properly installed protective vapor retarders or barriers shall be used on below ambient temperature applications to reduce movement of moisture through or around the insulation to the colder surface. Failure to use a vapor retarder or barrier could lead to insulation and system non-performance.

1.3 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.

1.4 The following safety hazards caveat pertains only to the test methods described in this specification. 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

C165-23

Standard Test Method for Measuring Compressive Properties of Thermal Insulations

C167-25

Standard Test Methods for Thickness and Density of Blanket or Batt Thermal Insulations

C1058-03

Standard Practice for Selecting Temperatures for Evaluating and Reporting Thermal Properties of Thermal Insulation

C1045-19(2026)

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

C795-08(2023)

Standard Specification for Thermal Insulation for Use in Contact with Austenitic Stainless Steel

C518-21

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

C447-15(2022)

Standard Practice for Estimating the Maximum Use Temperature of Thermal Insulations

C411-26

Standard Test Method for Hot-Surface Performance of High-Temperature Thermal Insulation

E84-26a

Standard Test Method for Surface Burning Characteristics of Building Materials (Includes all amendments and changes 4/15/2026).

C1617-24

Standard Test Method for Quantitative Accelerated Laboratory Evaluation of Extraction Solutions Containing Ions Leached from Thermal Insulation on Aqueous Corrosion of Carbon Steel

C1511-15(2021)

Standard Test Method for Determining the Water Retention (Repellency) Characteristics of Fibrous Glass Insulation (Aircraft Type)

C1338-25

Standard Test Method for Determining Fungi Resistance of Insulation Materials and Facings

C1114-06(2019)

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

C1104/C1104M-19(2025)

Standard Test Method for Determining the Water Vapor Sorption of Unfaced Mineral Fiber Insulation

C1101/C1101M-23

Standard Test Methods for Classifying the Flexibility or Rigidity of Mineral Fiber Blanket and Board Insulation

CAN/ULC-S102

Standard Method of Test for Surface Burning Characteristics of Building Materials and Assemblies

E2231-26a

Standard Practice for Specimen Preparation and Mounting of Pipe and Duct Insulation Materials to Assess Surface Burning Characteristics (Includes all amendments and changes 8/26/2026).

C390-08(2024)

Standard Practice for Sampling and Acceptance of Thermal Insulation Lots

C356-22

Standard Test Method for Linear Shrinkage of Preformed High-Temperature Thermal Insulation Subjected to Soaking Heat

C335-05a

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

C303-21

Standard Test Method for Dimensions and Density of Preformed Block and Board–Type Thermal Insulation

C177-19(2026)

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

C168-25

Standard Terminology Relating to Thermal Insulation