Amsler Shear Test (ASTM B769)

Model No. WTF-AS (17-4 PH & Hardened 440C Stainless)

Assembled Amsler

Fig. 1: ASTM Standard B769 Amsler Shear Test Fixture.

 The Amsler Shear Test Fixture in its various forms has been around for many years. The test was originally designed to double load a machined aluminum cylinder to determine the shear ultimate strength of the alloy. However, it is now used to test a variety of different metals.

It differs from MIL-STD-1312-13 as the specimen passes through holes in the anvil and blade instead of resting on semicircular cutouts. The benefit of this difference is that unlike 1312-13 you can use one fixture for a variety of sizes as the blade and anvil holes are replaced by dies can be swapped around to accomodate a range of sizes.

The dies are made of 440C Stainless hardened to min Rc. 55 and the body is made of 17-4 PH stainless steel. We can fabricate the fixture out of Inconel 718 if high temperature testing is needed.

 

Amsler

Fig. 2: Disassembled ASTM Standard B769 Amsler Shear Test Fixture.

Sources of Additional Information:

1) ASTM Standard B769-07, "Standard Test Method for Shear Testing of Aluminum Alloys", American Society for Testing and Materials, West Conshohocken, Pennsylvania (first published in May 1987).