ASTM D5941-96
Standard Test Method for Determination of Izod Impact Strength

Standard No.

ASTM D5941-96

Release Date

1996

Published By

American Society for Testing and Materials (ASTM)

Status

Withdraw 1998-01

Latest

ASTM D5941-96

Scope

1.1 This test method covers a procedure for determining the Izod impact strength of plastics under defined conditions. A number of different types of specimen and test configurations are defined. Different test parameters are specified according to the type of material, type of test specimen, and type of notch. 1.2 The procedure is used for investigating the behavior of specified types of specimens under the impact conditions defined and for estimating the brittleness or toughness of specimens within the limitations inherent in the test conditions. 1.3 The procedure is suitable for use with the following range of materials: 1.3.1 Rigid thermoplastics molding and extrusion materials, including filled and reinforced compounds in addition to unfilled types; rigid thermoplastics sheet; 1.3.2 Rigid thermosetting molding materials, including filled and reinforced compounds; rigid thermosetting sheet, including laminates; 1.3.3 Fiber-reinforced thermoset and thermoplastics composites incorporating unidirectional or nonunidirectional reinforcements such as mat, woven fabrics, woven rovings, chopped strands, combination and hybrid reinforcements, rovings and milled fibers; sheet made from pre-impregnated materials (prepregs). 1.3.4 Thermotropic liquid-crystal polymers. 1.4 The procedure is not normally suitable for use with rigid cellular materials and sandwich structures containing cellular material. Also, notched specimens are not normally used for long-fiber-reinforced composites or for thermotropic liquidcrystal polymers. 1.5 The procedure is adapted to the use of specimens that may be either molded to the chosen dimensions, machined from the central portion of a standard multipurpose test specimen (see ISO 3167 (Specification D 5936)), or machined from finished and semifinished products such as moldings, laminates, and extruded or cast sheet. 1.6 The procedure specifies preferred dimensions for the test specimen. Tests that are conducted on specimens of different dimensions and notches, or on specimens that are prepared under different conditions, may produce results that are not comparable. Other factors, such as the energy capacity of the pendulum, its impact velocity, and the conditioning of the specimens, can also influence the results. Consequently, when comparative data are required, these factors must be controlled and recorded carefully. 1.7 The procedure should not be used as a source of data for design calculations of components. Information on the typical behavior of a material can be obtained, however, by testing at different temperatures, by varying the notch radius or the thickness, or both, and by testing specimens prepared under different conditions. 1.8 This test method is identical to ISO 180. This test method is comparable to Test Method D 256, but neither test method should be substituted for the other. The two test methods may differ with respect to test specimen dimensions, test specimen conditioning, test equipment, testing conditions, etc. The two test methods may not give the same results. 1.9 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.10 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility ofthe user of this standard to establish appropriate safety and health practices and determine the applicability ofregulatory limitations prior to use.

ASTM D5941-96 Referenced Document

• ASTM D256 Standard Test Methods for Determining the Izod Pendulum Impact Resistance of Plastics*， 2023-03-15 Update
• ASTM D5936 
• ASTM D5939 Standard Test Method for Injection Moulding of Test Specimens of Thermoplatic Materials
• ASTM D5940 
• ISO 180 Plastics. Determination of Izod impact strength*， 2023-06-07 Update
• ISO 2818 Plastics — Preparation of test specimens by machining*， 2018-12-13 Update
• ISO 294 Plastics - Injection moulding of test specimens of thermoplastic materials
• ISO 3167 Plastics - Multipurpose test specimens*， 2014-08-01 Update

ASTM D5941-96 history

• 1996 ASTM D5941-96 Standard Test Method for Determination of Izod Impact Strength