The purpose of this military standard is to provide uniform methods for the ultrasonic inspection of wrought metals and wrought metal products.
The methods for ultrasonic inspection in this standard are applicable in the detection of flaws in wrought metals and wrought metal products having a cross section thickness equal to 0.250 inch or greater. Wrought metals include forging stock, forgings, rolled billet or plate, extruded or rolled bars, extruded or rolled shapes and parts made from them. Application of the methods in this standard is not intended for non-metals, welds, castings or sandwich structures.
Wrought aluminum alloy products: Requirements for ultrasonic inspection of aluminum alloy wrought products, except as noted below, shall be in accordance with ASTM B 594:
a. When ultrasonic quality level class AA is required, the discontinuity acceptance criteria shall be as defined in table VI.
b. Ultrasonic inspection of machined aluminum alloy parts shall be in accordance with this standard.
The ultrasonic inspection methods in this standard shall be classified as follows:
I - Immersion method.
II - Contact method.
Class: Five ultrasonic acceptance classes shall be as defined in table VI.