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ASTM D3641-02

Historical Revision

Standard Practice for Injection Molding Test Specimens of Thermoplastic Molding and Extrusion Materials

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1.1 This practice covers the general principles to be followed when injection molding test specimens of thermoplastic molding and extrusion materials. This practice is to be used to obtain uniformity in methods of describing the various steps of the injection molding process and to set up uniform methods of reporting these conditions. The exact conditions required to prepare suitable specimens will vary for each plastic material. Those conditions should become a part of the specification for the material, or be agreed upon between the purchaser and the supplier. Any requirements or recommendations in the material specification which differ from this standard take precedence over those in this standard.

1.2 The methodology presented assumes the use of reciprocating screw injection molding machines.

1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.4 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 and health practices and determine the applicability of regulatory limitations prior to use.

Note 1—This practice is equivalent to the following parts of ISO 294: Plastics-Injection Moulding of Test Specimens of Thermoplastic Materials; 294-1: Part 1-General Principles and Multipurpose Test Specimens (ISO Type A Mould) and Bars (ISO Type B Mould); ISO 294-2: Part 2-Small Tensile Bars (ISO Type C Mould); ISO 294-3: Part 3-Plates (ISO Type D Moulds).


It is well known that plastic test specimens molded under different conditions can have significantly different properties. This practice is designed to minimize those differences by establishing operating protocols without being unnecessarily restrictive.

Always refer to the ASTM material specification or ISO designation for the material for recommended molding conditions. If not available, consult the material supplier.

This practice requires the use of adequate quantities of plastic material to find desirable operating conditions and to make the desired test specimens.

SDO ASTM: ASTM International
Document Number D3641
Publication Date April 10, 2002
Language en - English
Page Count 9
Revision Level 02
Supercedes
Committee D20.09
Publish Date Document Id Type View
Sept. 1, 2024 D3641-24 Revision
April 1, 2021 D3641-21 Revision
May 1, 2015 D3641-15 Revision
March 1, 2014 D3641-14 Revision
April 15, 2012 D3641-12 Revision
Nov. 1, 2010 D3641-10A Revision
Aug. 1, 2010 D3641-10 Revision
April 10, 2002 D3641-97 Revision
April 10, 2002 D3641-02 Revision