Common Defects of Steel Forgings 1) Unfilled Section: As the name implies in this type of defect some of the forging section remain unfilled. ... 2) Cold Shut: Cold shut includes small cracks at corners. ... 3) Scale Pits: ... 4) Die Shift: ... 5) Flakes: ... 6) Improper Grain Growth: ... 7) Incomplete Forging Penetration: ... 8) Surface Cracking: More items... May 17, 2018