ASTM C1139-90(1996)e1 - 1.1.1996
 
1. Scope

1.1 This specification covers unfaced flexible fibrous glass blanket and faced board used for thermal and sound absorbing insulation at temperatures up to 450°F (232°C) for military applications as a replacement for MIL-I-22023D.

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 The following hazard caveat pertains only to the test method section of this specification. This standard does not purport to address the safety problems associated with its use. It is the responsibility of the user to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

 
2. Referenced Documents

MIL-A-3316

Adhesives, Fire Resistant, Thermal Insulation

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).

E70-24

Standard Test Method for pH of Aqueous Solutions With the Glass Electrode

D1448-11

Standard Test Method for Micronaire Reading of Cotton Fibers (Withdrawn 2020)

C1335-23

Standard Test Method for Measuring Non-Fibrous Content of Man-Made Rock and Slag Mineral Fiber Insulation

C423-23e1

Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method (Includes all amendments and changes 8/9/2024).

MIL-C-20079

Cloth, Glass; Tape, Textile Glass And Thread, Glass And Wire-Reinforced Glass

MIL-Y-1140

Yarn, Cord, Sleeving, Cloth and Tape-Glass

MIL-STD-167-1

Mechanical Vibrations of Shipboard Equipment (Type 1 Environmental and Type II Internally Excited)

E176-24a

Standard Terminology of Fire Standards (Includes all amendments and changes 12/9/2024).

E84-26a

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

C665-24

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

C1101/C1101M-23

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

C518-21

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

C411-19

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

C390-08(2024)

Standard Practice for Sampling and Acceptance of Thermal Insulation Lots

C177-19e1

Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Guarded-Hot-Plate Apparatus (Includes all amendments and changes 2/23/2023).

MIL-E-17970

Enamel, Non-Flaming Semi-Gloss White

C167-25

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

C168-25

Standard Terminology Relating to Thermal Insulation