Wrap-Loose
A condition in a coil due to insufficient tension
which creates a small void
between adjacent wraps.
Wrinkling
A coating defect of small ridges or folds resembling a small prune skin.
Y
Yield Point Elongation (YPE)
Refers to a non-uniform elongation of steel and
resulting
susceptibility to Lüders bands (surface
strain lines, resembling crossbreaks). The
deformation can be measured and while there is no
accepted industry standard,
generally a YPE measurement below 0.5% would suggest
an absence of strain lines
during/after stamping
REF SKULD
