ASTM A938 - 07(2013)
Standard Test Method for Torsion Testing of Wire

ASTM A938 covers torsion testing of wire. ASTM A938 provides knowledge of the ductility of a wire when under torsion loading. A torsional test machine with proper gripping solutions is necessary for the test practices of ASTM A938.

It is a testing standard that describes the torsion (or twist) testing procedures of metallic wire. The results of torsion tests can be used to assess wire ductility under torsional loading.

The torsion testing machine should have chuck jaws that will remain coaxial during the test. One of the chucks should be easily displaceable in the direction of the wire axis. The wire should be twisted only along the test length, and not at the point of clamping. We recommend UnitedTest metal wire reverse torsion testing machine.

Keywords
Ductility - Fracture - Metallic Wire Specimens - Test Specimens And Test Engines - Torsion - Torsion Test