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ASTM D1238-01e1

Historical Revision

Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer

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1.1 This test method covers measurement of the rate of extrusion of molten resins through a die of a specified length and diameter under prescribed conditions of temperature, load, and piston position in the barrel as the timed measurement is being made.

1.2 Procedure A is a manual cutoff operation based on time used for materials having flow rates that fall generally between 0.15 and 50 g/10 min. Procedure B is an automatically timed flow rate measurement used for materials having flows from 0.50 to 900 g/10 min. By both procedures, the piston travel is generally the same during the timed measurement; the piston foot is about 46 and 20.6 mm above the die. Comparable flow rates have been obtained by these procedures in interlaboratory round-robin measurements of several materials described in 12.1. Provision is made for calculation of melt volume-flow rate as well as melt mass-flow rate.

Note 1—Round-robin testing indicates this test method may be suitable at flow rates up to 1500 g/10 min if the timing clock resolves the elapsed time to the nearest 0.01 s.

Note 2—This test method and ISO 1133-1991 are technically equivalent.

1.3 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Note 10, Note 26, and Note 29.


SDO ASTM: ASTM International
Document Number D1238
Publication Date Aug. 10, 2001
Language en - English
Page Count 12
Revision Level 01e1
Supercedes
Committee D20.30
Publish Date Document Id Type View
Nov. 15, 2023 D1238-23A Revision
Feb. 1, 2023 D1238-23 Revision
July 1, 2020 D1238-20 Revision
Aug. 1, 2013 D1238-13 Revision
Feb. 1, 2010 D1238-10 Revision
Dec. 1, 2004 D1238-04C Revision
Aug. 1, 2004 D1238-04A Revision
March 1, 2004 D1238-04 Revision
Aug. 10, 2001 D1238-01E01 Revision
Aug. 10, 2001 D1238-00 Revision
Not Available D1238-90B Revision
Not Available D1238-85 Revision