SAE J671-2014 PDF

Scope: "Description of Material??The materials classified under this specification are: a. Mastic vibration damping materials used to reduce the sound emanating from metal panels. b. Mastic underbody coatings used to give protection and some vibration damping to motor vehicle underbodies@ fenders@ and other parts. Numbering System PREFIXES??The prefix ""D"" is used to indicate a cut back vibration damping material and the prefix ""U"" is used to indicate a cut back underbody coating material. Should a water emulsion be desired@ the prefix should be followed by the letter ""E."" Should a solvent-water emulsion be desired@ the prefix should be followed by the letter ""F."" TYPES??The materials are further divided into types@ based on the decay rate in decibels per second (dB/s) at 21 ?? and classes@ based on the percentage of solids contained in the material. Example of the Use of Numbers??A cut back underbody coating having a decay rate of 5 dB/s and a solids content of 65% would be designated by the number U-565. An emulsion body damping material of medium decay rate and maximum solids content would be numbered DE-1090. Any combination of type and class could be used to suit the needs of the application."

SAE J671-2014 Referenced Document

ASTM D217-10 Standard Test Methods for Cone Penetration of Lubricating Grease
ASTM D93-13 Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester*， 2024-04-20 Update

2014 SAE J671-2014 Vibration Damping Materials and Underbody Coatings
1997 SAE J671-1997 Vibration Damping Materials and Underbody Coatings
1982 SAE J671-1982 Vibration Damping Materials and Underbody Coatings@ Standard (April 1982)