Mazzella Companies’ Post

Why do Crosby's shackles stretch when overloaded rather than shatter? It's because of a very important process: heat treating. Kito Crosby heats the shackle to a carefully refined temperature. The microstructure of the steel is formed into tempered martensite, refining grain boundaries and giving the shackle the toughness to best resist fracture.   The shackles are then quenched in liquid. Quenching freezes the steel’s grain structure within the shackle. The shackles then move into a second furnace to be tempered. This time, they are heated to a lower temperature to relax the steel and give the shackles their ductility.   Each of these temperatures, which have been perfected and tweaked over many decades, gives the shackles superior ductility ratings, toughness, fatigue, and impact properties. After the heat treatment, hardness checks are performed to ensure the shackle is within the required tolerances.  Watch the full video to see this incredibly intricate process. Need a Crosby shackle at your job site? Buy one on our e-commerce site! 📺: https://lnkd.in/gCAj_MiK  🛍️: https://lnkd.in/gAm9mm2P    Check out these FREE pieces of content! Shackle Markings Identification Guide     ► https://lnkd.in/gzvF5icv Rigging Gear Inspection Field Reference      ► https://lnkd.in/e9BEiY8V What Are the Different Types of Shackles for Lifting and Rigging?      ► https://lnkd.in/ewtTbqbb ASME B30.26 Shackle Inspection Requirements & Best Practices for Use     ► https://lnkd.in/gYN74UKF    Disclaimer: Any advice, graphics, images, and/or information contained herein are presented for general educational and information purposes and to increase overall safety awareness. It is not intended to be legal, medical, or other expert advice or services, and should not be used in place of consultation with appropriate industry professionals. The information herein should not be considered exhaustive, and the user should seek the advice of appropriate professionals. 

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