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An investigation on behaviour of 800 MPa grade hot-rolled steels in interrupted ISO 16630 hole expansion testing

Plosila, Pekka; Vierelä, Raimo; Juntunen, Päivi; Kesti, Vili; Kömi, Jukka; Kaijalainen, Antti
MATEC Web of Conferences (EDP Sciences, 2025)

The ISO 16630 hole expansion test is the most widely used method for investigating the stretch-flangeability of steels. However, the limiting hole expansion ratio (HER) does not provide detailed information on the behaviour ...