Laminations refer to defects in steel mill products characterized by layers within the metal.

Laminations refer to defects in steel mill products characterized by layers within the metal.

• A. Stress cracks
• B. Laminations
• C. Die burn
• D. Arc drags

Answer: (B)

Lamination defects are characterized by distinct internal layers within the metal, indicating separation or layering that occurred during processing—such as incomplete bonding between passes or issues during casting or rolling. This layered structure is the defining feature, which is why the statement describing laminations matches the concept. In contrast, stress cracks are true cracks that form under tensile or residual stresses, appearing as fine fractures in the material. Die burn refers to heat-related surface damage or discoloration from tooling contact, not internal layering. Arc drags are surface irregularities or contamination caused by welding arcs, not internal layered structure.

Lamination defects are characterized by distinct internal layers within the metal, indicating separation or layering that occurred during processing—such as incomplete bonding between passes or issues during casting or rolling. This layered structure is the defining feature, which is why the statement describing laminations matches the concept.

In contrast, stress cracks are true cracks that form under tensile or residual stresses, appearing as fine fractures in the material. Die burn refers to heat-related surface damage or discoloration from tooling contact, not internal layering. Arc drags are surface irregularities or contamination caused by welding arcs, not internal layered structure.