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Stops crack propagation
The physics of
compressive stress states "Cracks cannot propagate into or through a layer
of compression unless the effective yield strength of the material is
exceeded."
MetaLLife
increases the effective yield strength of the tool steel from 30-40%.
This increase prevents crack propagation.
Thermal and tensile fatigue cracks that
are too large to be closed
by the temporary plastic flow of metal still have compression at both ends
of the cracked area. Applying the physics of the first statement, the
cracking is arrested by the compression present at these locations.
Related Topics
> Extends Die Life |
