ASTM D6272-17
Standard Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials by Four-Point Bending

Standard No.

ASTM D6272-17

Release Date

2017

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D6272-17e1

Latest

ASTM D6272-17e1

Scope

1.1 This test method covers the determination of flexural properties of unreinforced and reinforced plastics, including high-modulus composites and electrical insulating materials in the form of rectangular bars molded directly or cut from sheets, plates, or molded shapes. These test methods are generally applicable to rigid and semirigid materials. However, flexural strength cannot be determined for those materials that do not break or that do not fail in the outer fibers. This test method utilizes a four point loading system applied to a simply supported beam. 1.2 This test method describes two procedures (Procedure A and Procedure B), the selection of which depends on the behavior of the sample to be tested as explained below: 1.2.1 Procedure A, designed principally for materials that break at comparatively small deflections. It shall be used for measurement of flexural properties, particularly flexural modulus, unless the material specification states otherwise. 1.2.2 Procedure B, designed particularly for those materials that undergo large deflections during testing. It is suitable for measurement of flexural strength. 1.3 Comparative tests are permitted to be run according to either procedure, provided that the procedure is found satisfactory for the material being tested. 1.4 The values stated in SI units are to be regarded as the standard. The values provided in parentheses are for information only. 1.5 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 test method is similar to ISO 14125, Method B. However, ISO 14125, Method B specifies only a load span of 1⁄3 the support span whereas D6272 also permits a load span of 1⁄2 the support span. For this reason and other differences in technical content, exercise extreme care if attempting to compare results between the two test methods.

ASTM D6272-17 Referenced Document

• ASTM D4000 Standard Classification System for Specifying Plastic Materials*， 2023-03-15 Update
• ASTM D5947 Standard Test Methods for Physical Dimensions of Solid Plastics Specimens
• ASTM D618 Standard Practice for Conditioning Plastics for Testing*， 2021-07-15 Update
• ASTM D638 Standard Test Method for Tensile Properties of Plastics
• ASTM D790 Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials*， 2024-04-21 Update
• ASTM D883 Standard Terminology Relating to Plastics*， 2024-02-01 Update
• ASTM E4 Standard Practices for Force Verification of Testing Machines
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
• ASTM E83 Standard Practice for Verification and Classification of Extensometer
• ISO 14125 Fibre-reinforced plastic composites - Determination of flexural properties; Technical Corrigendum 1

ASTM D6272-17 history

• 2017 ASTM D6272-17e1 Standard Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials by Four-Point Bending
• 2017 ASTM D6272-17 Standard Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials by Four-Point Bending
• 2010 ASTM D6272-10 Standard Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials by Four-Point Bending
• 2002 ASTM D6272-02(2008)e1 Standard Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials by Four-Point Bending
• 2002 ASTM D6272-02 Standard Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials by Four-Point Bending
• 2000 ASTM D6272-00 Standard Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials by Four-Point Bending