ASTM C1393-26

Detail information

Designation: ASTM C1393-26

Publication date: 01/09/2026

Pages: 6

Country: American technical standard

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Anotation

This specification covers perpendicularly oriented mineral fiber roll and sheet thermal insulation for use on the flat, curved, or round surfaces of pipes and tanks. The orientation of the rock, slag, or glass fibers within the roll or sheet insulation is essentially perpendicular to the heated/cooled surface. Materials covered in this specification do not include flat block, board, duct wrap, or preformed pipe mineral fiber insulation where the insulation fiber orientation is generally parallel to the heated/cooled surface. In low-temperature applications, properly installed protective vapor retarders should be used to prevent water vapor from moving through or around the insulation towards the colder surface. The materials are classified into six types according to the maximum use temperature and maximum apparent thermal conductivity and into two categories according to minimum compressive resistance. Samples taken from the materials should be tested according to the recommended procedures and should conform to the required values of corrosiveness to steel, stress corrosion to austenitic stainless steel, shot content, maximum use temperature, maximum exothermic temperature rise, and compressive resistance.


Keywords:
apparent thermal conductivity, facing, mineral fiber, perpendicularly oriented fiber, pipe and tank insulation, sheet, shot, shot content,, ICS Number Code 23.020.10 (Stationary containers and tanks),27.220 (Heat recovery. Thermal insulation)