ISO 16630:2009 describes a method of determining the hole expansion ratio in metallic sheets and strips with a thickness range of 1,2 mm to 6,0 mm inclusive and a width of at least 90 mm. This test is normally applicable to sheet metal and is used to assess the suitability of the product for forming flanges.
GSO ISO 16630:2010 history
2010GSO ISO 16630:2010 Metallic materials -- Sheet and strip -- Hole expanding test