Radiographic Testing

An ASTM IQI for use when inspecting a 12.7 mm (0.5 in.) thick steel plate to the 2-2T quality level using a 406.4 mm (16 in.) source-to-film distance would be made of:

0.127 mm (0.005 in.) thick aluminum

1.27 mm (0.05 in.) thick aluminum or steel

0.254 mm (0.01 in.) thick steel

0.051 mm (0.002 in.) strip of any metallic material

None of the above