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Hole Expansion Test

The hole expansion test is a test method applied in the metalworking industry and is used to determine the ductility of the edges on punched sheet metal.

Particularly in the case of high strength steels, forming technology presents new challenges due to the formation of edge cracks. Shearing reduces the forming capacity of the edge. In order to secure manufacturing processes, characteristic values ​​for edge crack sensitivity are therefore determined using the hole expansion test.

Overview of the Hole Expansion Tests

Metals | Sheet metal | Hole expansion test, edge crack sensitivity
ISO 16630
Hole expansion test with conical punch
to Metals | Sheet metal | Hole expansion test, edge crack sensitivity
Metals | Sheet metal | Hole expansion test KWI
Hole expansion test with flat drawing punch
to Metals | Sheet metal | Hole expansion test KWI

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Related Products for Performing the Hole Expansion Test

Additional Test Methods for Sheet Metal Forming:

Cupping tests on metals
to Cupping tests on metals
Earing test on metals
to Earing test on metals
Metals | Sheet metal | U-bend test
to Metals | Sheet metal | U-bend test
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