ASTM A938 Standard Test Method for Torsion Testing of Wire

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of ASTM A938 testing. This standard measures the simple torsion properties of metallic wire.

This standard performs a one-way twist to failure on wire samples that can cover many different materials and geometries. These tests determine the number of turns to failure as well as the peak torque.

ASTM A938 tests are typically performed by raw material manufacturers, particularly metal manufacturers. These wires can be used in a wide variety of end products such as bed springs, instrument wires and metal wiring. Torsion is generally a resultant force to which the material is subjected under normal loading conditions; this means that the maximum torque is required to evaluate the safety of the product.

This test is best performed on a torsion testing system such as Instron's MT Series with Bluehill Universal software. Gripping solutions depend on the diameter and hardness of the material and can range from collet holders for softer materials to chucks for harder materials. It is recommended that the hardness of the jaw faces be greater than 55 HRC. An axial preload system is required to maintain straightness of the wire during testing.

EUROLAB assists manufacturers with ASTM A938 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.