ASTM A938 PDF


ASTM A and ISO address the requirements for simple torsion (twist) testing of metallic wire. Both testing standards require that a wire specimen be. This standard is issued under the fixed designation A ; the number 1 This test method is under the jurisdiction of ASTM Committee A01 on Steel,. Stainless . ASTM A covers torsion testing of wire. ASTM A provides knowledge of the ductility of a wire when under torsion loading. A torsional test machine with.

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MicroTorsion Series As the preferred solution for low-force torsion testing and component in-service simulation, the MT MicroTorsion Series test wires, asstm, switches, and springs in the biomedical, automotive, and aerospace industries. Upon failure, the number of turns should be recorded. The MT torsion models are available with extended length if longer specimen lengths are required.

Glossary of Materials Testing Terms. The real-time measurement data can also be plotted graphically during the test. Bluehill LE for Basic Testing. Our MT1 and MT2 torsion test systems offer an axial preload assembly that provides a constant axial force and can be adjusted for different size specimens. Torque versus Rotation plots are automatically generated during the test and indicate where the wire yields and fractures.

Torsion Testing Wire to ASTM A938 and ISO 7800

Software for Series Systems. Keyless chucks W-MT01 offer a toothed profile asrm helps reduce slippage. Tests cannot be run when the door is opened and the rugged Lexan shield helps protect the operator from broken specimen fragments that may be ejected during failure. Email addresses can only contain letters, numbers and the following special characters: Email addresses must contain the symbol.

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Subscribe to Instron News! Subscribe to Our Newsletters. Next Checking to see if you are a returning visitor…. Check this box to receive pertinent commercial email from Instron focusing sstm products, upcoming events, and more! Speed of Twisting – The rate of testing can vary and both standards provide recommended ranges that are based on the wire diameter.

ASTM A938 Torsional Test of Wire

Both testing standards require that a wire specimen be twisted about the longitudinal axis until it fails. Gripping Maintaining the rate of turning Applying a constant tensile force Accommodating various specimen lengths Shielding against broken specimen fragments Automatic turn counting Measuring and plotting torque Instron Solution Gripping – Many common wire diameters can be gripped with standard drill style chucks.

Additionally, some labs want to know the torque required for specimen failure and would also like to see a plot of torque versus the number of turns for the entire test. Concrete, Asphalt and Rock.

This plot will show where the wire yielded during the twist test, as ast as the failure point and profile. How can we help you? Discover simpler and smarter testing with features such as pre-loaded test methods, QuickTest in seconds, enhanced data exporting: Onsite Training At Your Facility. Contact Us View Accessories Catalog.

ASTM A – 07 Standard Test Method for Torsion Testing of Wire

As the preferred solution for low-force torsion testing and component in-service simulation, the MT MicroTorsion Series test wires, fasteners, switches, and springs in the biomedical, automotive, and aerospace industries. Specimen Lengths – Instron’s MT torsion testers feature an adjustable tailstock assembly that allows for easy adjustment of the test aatm.

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Challenges The challenges of testing wire to these standards are: Keyed chucks W-MTB provide smaller diameter clamping.

We use cookies to improve your a98 experience. Please confirm that you agree with our privacy and cookies policy to submit this form. By continuing to use our site, you accept our cookie policy. The MT torsion systems are supplied with precision torque cells that can measure torque accurately down to 0.

Users of previous versions of software such as Bluehill 2 and Bluehill 3 can easily upgrade to the newest version of Bluehill. Guide rails enable the assembly to move freely in the axial direction while a test is being performed. Bluehill Universal Brochure Bluehill Universal Software is built from the ground-up for touch interaction and an intuitive user experience. WaveMatrix 2 for Dynamic Testing. Total Turns Measurement – The total number of turns to fracture are directly measured aatm a digital rotary encoder and ast recorded by the testing software.

Universal materials testing software for static hydraulic, electromechanical and torsion testing systems – WBB.