This European Standard describes a method for the ultrasonic testing of uncoated flat steel product for internal discontinuities. It is applicable to flat product in nominal thicknesses range of 6 mm to 200 mm of non-alloyed or alloyed steel, excluding austenitic or austenoferritic steels. This standard may be applied to the latter types of steels provided that the difference between the amplitude of the noise signal and that of the echo detection threshold is sufficient for the limit fixed.
This standard also defines 4 quality classes for the flat product body and 5 classes for the edges.
Other methods if testing (e.g. by transmission) or other test equipment may be used at the manufacturer’s discretion provided that they give identical results to those obtained under the conditions of this standard. In the event of dispute, only the method defined in this standard shall prevail.
