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Full Description

1.1 This test method describes the procedure for determining the superplastic forming properties (SPF) of a metallic sheet material. It includes tests both for the basic SPF properties and also for derived SPF properties. The test for basic properties encompasses effects due to strain hardening or softening.

1.2 This test method covers sheet materials with thicknesses of at least 0.5 mm but not greater than 6 mm. It characterizes the material under a uni-axial tensile stress condition.

Note 1: Most industrial applications of superplastic forming involve a multi-axial stress condition in a sheet; however it is more convenient to characterize a material under a uni-axial tensile stress condition. Tests should be performed in different orientations to the rolling direction of the sheet to ascertain initial anisotropy.

1.3 This method has been used successfully between strain rates of 10-5 to 10-1 per second.

1.4 This method has been used successfully on Aluminum and Titanium alloys. The use of the method with other metals should be verified.

1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

 

Document History

  1. ASTM E2448-18

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    Standard Test Method for Determining the Superplastic Properties of Metallic Sheet Materials

    • Most Recent
  2. ASTM E2448-11e1


    Standard Test Method for Determining the Superplastic Properties of Metallic Sheet Materials

    • Historical Version
  3. ASTM E2448-11


    Standard Test Method for Determining the Superplastic Properties of Metallic Sheet Materials

    • Historical Version
  4. ASTM E2448-08


    Standard Test Method for Determining the Superplastic Properties of Metallic Sheet Materials

    • Historical Version
  5. ASTM E2448-06


    Standard Test Method for Determining the Superplastic Properties of Metallic Sheet Materials

    • Historical Version
  6. ASTM E2448-05


    Standard Test Method for Determining the Superplastic Properties of Metallic Sheet Materials

    • Historical Version