Cold-rolling gives steel greater strength, permits much closer control of thickness and provides a smoother surface.
However, it reduces the ductility and the ability to elongate and absorb shocks.
These properties are restored to Magnus strapping through the ITW Industrial Packaging heat-treating process. This process yields a superior quality, uniform strapping material with high strength, narrow tolerances, a high yield point, and sufficient ductility to be bent around sharp corners. Its elongation, in sizes normally used in rail car-loading, meets the specifications of the Association of American Railroad (AAR).
In the chart below, the yeild point of Magnus is compared to that of standard cold-rolled steel strapping. A strap's yield point is the point at which it starts to stretch so much that it will not return to its original length when stress is removed. Compared to conventional cold-rolled steel strapping, Magnus's high yield strength allows it to elongate further without breaking to better absorb shocks during transit and handling.