ASTM D1043-16
Standard Test Method for Stiffness Properties of Plastics as a Function of Temperature by Means of a Torsion Test
- Standard No.
- ASTM D1043-16
- Release Date
- 2016
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM D1043-16(2024)
- Latest
- ASTM D1043-16(2024)
- Scope
4.1 The property measured by this test is the apparent modulus of rigidity, G, sometimes called the apparent shear modulus of elasticity. It is important to note that this property is not the same as the modulus of elasticity, E, measured in tension, flexure, or compression. The relationship between these properties is shown in Annex A1.
4.2 The measured modulus of rigidity is termed “apparent” since it is the value obtained by measuring the angular deflection occurring when the specimen is subjected to an applied torque. Since it is possible that the specimen will be deflected beyond its elastic limit, the calculated value will not always represent the true modulus of rigidity within the elastic limit of the material. In addition, the value obtained by this test method will also be affected by the creep characteristics of the material, since the load application time is arbitrarily fixed. For many materials, it is possible that there is a specification that requires the use of this test method, but with some procedural modifications that take precedence when adhering to the specification. Therefore, it is advisable to refer to that material specification before using this test method. Table 1 in Classification D4000 lists the current ASTM material standards.
4.3 This test method is useful for determining the relative changes in stiffness over a wide range of temperatures.
1.1 This test method covers the determination of the stiffness characteristics of plastics over a wide temperature range by direct measurement of the apparent modulus of rigidity.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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 and ISO8201;458-1 and ISO8201;458-2 address the same subject matter, but differ in technical content.
ASTM D1043-16 Referenced Document
- ASTM D1053 Standard Test Methods for Rubber Property—Stiffening at Low Temperatures: Flexible Polymers and Coated Fabrics
- ASTM D4000 Standard Classification System for Specifying Plastic Materials
- ASTM D5947 Standard Test Methods for Physical Dimensions of Solid Plastics Specimens
- ASTM D618 Standard Practice for Conditioning Plastics for Testing
- ASTM D638 Standard Test Method for Tensile Properties of Plastics
- ASTM D747 Standard Test Method for Apparent Bending Modulus of Plastics by Means of a Cantilever Beam
- ASTM D883 Standard Terminology Relating to Plastics
- ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
- ISO 458-1 Plastics; Determination of stiffness in torsion of flexible materials; Part 1 : General method
- ISO 458-2 Plastics; Determination of stiffness in torsion of flexible materials; Part 2 : Application to plasticized compounds of homopolymers and copolymers of vinyl chloride
ASTM D1043-16 history
- 2024 ASTM D1043-16(2024) Standard Test Method for Stiffness Properties of Plastics as a Function of Temperature by Means of a Torsion Test
- 2016 ASTM D1043-16 Standard Test Method for Stiffness Properties of Plastics as a Function of Temperature by Means of a Torsion Test
- 2010 ASTM D1043-10 Standard Test Method for Stiffness Properties of Plastics as a Function of Temperature by Means of a Torsion Test
- 2009 ASTM D1043-09 Standard Test Method for Stiffness Properties of Plastics as a Function of Temperature by Means of a Torsion Test
- 2002 ASTM D1043-02 Standard Test Method for Stiffness Properties of Plastics as a Function of Temperature by Means of a Torsion Test
- 1999 ASTM D1043-99 Standard Test Method for Stiffness Properties of Plastics as a Function of Temperature by Means of a Torsion Test
