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ASTM F2082-06

Historical Revision

Standard Test Method for Determination of Transformation Temperature of Nickel-Titanium Shape Memory Alloys by Bend and Free Recovery (Withdrawn 2015)

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1.1 This test method describes a procedure for determining the martensite-to-austenite transformation temperatures of either fully-annealed or heat-treated nickel titanium alloys by measuring the deformation recovered during the thermal transformation.

1.2 The values in SI units are to be regarded as the standard. The values given in inch-pound units are provided for information only.

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.


This test method provides a rapid, economical method for determination of transformation temperatures.

Measurement of the specimen motion closely parallels many shape memory applications and provides a result that is applicable to the function of the material.

This test method uses wire, tube, or strip samples; thus, it is able to provide an assessment of the product in its semifinished form.

This test method may be used on annealed samples to determine the transformation temperatures and assure the alloy formulation, since chemical analysis is not precise enough to determine adequately the nickel-to-titanium ratio of shape memory alloys.

Transformation temperatures derived from this test method may differ from those derived from other methods as a result of effects of strain and load on the transformation temperature.

The test method is applicable to shape memory alloys with Af temperatures in the range of approximately 25 to +90°C.

SDO ASTM: ASTM International
Document Number F2082
Publication Date Aug. 15, 2006
Language en - English
Page Count 7
Revision Level 06
Supercedes
Committee F04.15
Publish Date Document Id Type View
May 1, 2015 F2082-15 Revision
Aug. 15, 2006 F2082-06 Revision
Sept. 10, 2003 F2082-03 Revision
Jan. 10, 2001 F2082-01 Revision