ASTM D441-07(2019)e1
Standard Test Method of Tumbler Test for Coal

Standard No.

ASTM D441-07(2019)e1

Release Date

2019

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D441-07(2019)e1

Scope

1.1 This test method covers the determination of the relative friability of a particular size of sized coal. It affords a means of measuring the liability of coal to break into smaller pieces when subjected to repeated handling at the mine or subsequently, by the distributor or by the consumer. This test method is serviceable for ascertaining the similarity of coals in respect to friability rather than for determining values within narrow limits to emphasize their dissimilarity. This test method also may serve to indicate the relative extent to which sized coals will suffer size degradation in certain mechanical feed devices. This test method may be used for differentiating between certain ranks and grades of coal, and therefore the test method is of service for coal classification purposes. 1.2 The values stated in inch-pound units shall be regarded as the standard. Mass may be expressed in metric values. 1.3 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. 1.4 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.

ASTM D441-07(2019)e1 Referenced Document

• ASTM D2234/D2234M Standard Practice for Collection of a Gross Sample of Coal*， 2020-04-01 Update
• ASTM D4749 Standard Test Method for Performing the Sieve Analysis of Coal and Designating Coal Size
• ASTM E11 Standard Specification for Wire Cloth and Sieves for Testing Purposes

ASTM D441-07(2019)e1 history

• 2019 ASTM D441-07(2019)e1 Standard Test Method of Tumbler Test for Coal
• 2007 ASTM D441-07(2012) Standard Test Method of Tumbler Test for Coal
• 2007 ASTM D441-07 Standard Test Method of Tumbler Test for Coal
• 1986 ASTM D441-86(2002) Standard Test Method of Tumbler Test for Coal
• 1994 ASTM D441-86(1994)e1 Standard Test Method of Tumbler Test for Coal