What is impact strength?
In material sciences, impact strength is sometimes referred to as cold flow. In this regard, the difference between TAGLUS and other PU and PETG materials is that TAGLUS display time-dependent viscoelastic behavior. Viscoelastic behavior is the property of a material to display both viscous and elastic characteristics when undergoing deformation. It can result from long-term exposure to high levels of stress that are still beneath the yield strength or yield point of the material. The yield strength or yield point of a material is the property defined as the stress at which that material begins to deform permanently. Deformation refers to any change in the shape of an object due to an applied force or a change in temperature. The first instance can be the result of tensile forces, sometimes called pulling forces, compressive forces (pushing forces), or shear, bending or torsion (twisting). Deformation is often described as “strain”. Prior to the yield point, the material will deform elastically and will return to its original shape when the
applied stress is removed.
The Izod Impact Strength – Molded Notch as per ASTM D-256 / ISO 180 measured in ft-lb/in Notch shows that Taglus tough is having expectionally high impact strength of 17.4 ft-lb/in which is the highest in all class of retainers making it virtually crack free retainer for prolonged use.
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