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ASTM D3461-18

Current Revision

Standard Test Method for Softening Point of Asphalt and Pitch (Mettler Cup-and-Ball Method)

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1.1 This test method covers the determination of the softening point of asphalt and pitch in the range from 50 °C to 180 °C by the cup-and-ball apparatus, and gives results comparable to those obtained by Test Method D36.

Note 1: If the softening point of asphalt by this Mettler cup-and-ball method fails to meet specified requirements, tests may be rerun using the Test Method D36 (ring-and-ball) softening point apparatus as a referee method.

1.2 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


4.1 Asphalt and pitch do not go through a solid-liquid phase change when heated, and therefore do not have true melting points. As the temperature is raised, they gradually soften or become less viscous. For this reason, the determination of the softening point must be made by an arbitrary, but closely defined, method if the test values are to be reproducible.

4.2 This test method is useful in determining the consistency as one element in establishing the uniformity of shipments or sources of supply.

SDO ASTM: ASTM International
Document Number D3461
Publication Date Dec. 1, 2018
Language en - English
Page Count 8
Revision Level 18
Supercedes
Committee D02.05
Publish Date Document Id Type View
Dec. 1, 2018 D3461-18 Revision
Oct. 1, 2014 D3461-14 Revision
July 10, 1997 D3461-97 Revision
Nov. 1, 2012 D3461-97R12 Reaffirmation
May 1, 2007 D3461-97R07 Reaffirmation
July 10, 1997 D3461-97R02 Reaffirmation