Due to the very large number of tests offered, descriptions of those most commonly requested have been gathered into the following groups:

ASTM B769 – Shear Testing of Aluminum Alloys

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ASTM B769 testing covers double-shear testing of wrought and cast aluminum products to determine shear ultimate strengths. Data obtained from this method are used to calculate minimum properties that can be utilized in the design of structural members.

A cylindrical test specimen is subjected to double-shear loading in a test jig using a tensile or compressive test machine in order to determine the shear stress required to fracture the specimen. It should be noted that the presence of a lubricant on the surface of the specimen and jig may result in shear strength up to 3% lower than those without lubricant.

Touchstone has successfully performed this test at cryogenic temperatures up to 1000 °F.

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Reference: ASTM B769 – Standard Test Method for Shear Testing of Aluminum Alloys