ASTM D5419-95
Historical Standard: ASTM D5419-95 Standard Test Method for Environmental Stress Crack Resistance (ESCR) of Threaded Plastic Closures
SUPERSEDED (see Active link, below)
ASTM D5419
1. Scope
1.1 This test method determines the susceptibility of threaded plastic closures to failure due to environmental stress cracking (ESC).
1.2 Threaded plastic closures in use may contact agents that appreciably reduce the stress at which cracks form. Examples of such agents are: soaps, detergents, oils, and liquid bleaches.
1.3 Other major factors that influence environmental stress crack resistance (ESCR) of threaded plastic closures are the closure material(s), closure design, molded-in stress, and applied stress.
1.4 This procedure applies particularly to closures made from plastics based on polypropylene (PP) or polystyrene (PS). It may also apply to other polymers.
1.5 The values stated in SI units are to be regarded as the standard.
1.6 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. Specific precautionary statements are given in Section 8 and Note 2.
Note 1-There are no ISO standards covering the primary subject of this test method.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D618 Practice for Conditioning Plastics for Testing
D883 Terminology Relating to Plastics
D1600 Terminology for Abbreviated Terms Relating to Plastics
D2911 Specification for Dimensions and Tolerances for Plastic Bottles
D3198 Test Method for Application and Removal Torque of Threaded or Lug-Style Closures
E145 Specification for Gravity-Convection and Forced-Ventilation Ovens
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
Keywords
closures; environmental stress crack resistance (ESCR); failure; plastic; stress crack; threaded plastic closures; Closures (threaded); Environmental stress crack resistance (ESCR); Failure end point--plastics; Polypropylene (PP); Polystyrene (PS); Stress--plastics; Threaded closures
ICS Code
ICS Number Code 83.080.20 (Thermoplastic materials)
DOI: 10.1520/D5419-95
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