The bend (flexure) test is used to verify the ductility of the material. If the material does not fracture after bending (automatic failure), the piece is visually checked by the unaided eye for cracking or other surface irregularities. Tests are routinely done on plates, coils, and weld plates (face, root, or side bends).
Types of bend tests include:
Guided Bend
Semi-Guided Bend
Free Bend
Bend and Flatten
Wrap Around
Some of the bend test methods utilized includes ASTM A190 and A290, ASME Section IX, and AWS D1.1.