ASME basic .75″ test block, 1018 carbon steel
Used for establishment of primary reference responses for UT examination of welds.
Block contains three side-drilled holes at 1.5″ deep minimum at 3/32″ diameter.
Hole locations through the thickness are ¼, ½, and ¾.
Also contains two EDM notches measuring 2%T deep x 1/4″ max wide x 1.0″ long min.
In accordance with ASME Sec V Art. 4 Fig. T-434.2.1.