30 FBH Resolution Reference Block (Metric Version) Special Alloy

The 30 FBH resolution reference block is used to evaluate the near-surface resolution and flaw size/depth sensitivity of a normal-beam setup. In accordance with ASTM E428. 

Geometry: 38mm (THICK) x 100mm (WIDTH) x 280mm (LENGTH)

Contains 30 flat-bottom holes at 1.2mm diameter, ten at 2.0mm, and ten at 3.2mm. Metal travel distances range from 1.27mm to 31.75mm.

Material: Special Alloy