ASTM D299Full Name ASTM D299 – Standard Specification for Asbestos YarnsScope This specification covers asbestos yarns having a minimum of 75 % asbestos fiber by mass, excluding the mass of other inorganic reinforcing strands which may be present.Keywords asbestos; breaking strength; content; electromagnetic properties; reinforcements; twist; yarn; yarn numberResourcesASTM International Website: ASTM D299 Need more info?