Steel Mart supplies Alloy Chain Slings. Steel Mart is an ISO 9001-2000 certified company. The Alloy Chain Slings are often selected when operating under high temperatures or rugged conditions that would abrade or destroy other types of slings. These are flexible, durable and long lasting, ductile, easy to inspect, collapsible for convenient storage, and will adhere securely to the contours of a load. Although chain will show little or no stretch at rated capacity, it does have the ability to elongate up to 20% prior to failure. This elongation serves as a visual warning sign prompting users to remove the sling from service before injury or damage is sustained from a broken chain sling. Perhaps the most advantageous feature of an Alloy Chain Sling is its ability to be repaired. Nearly any damaged component discovered during an inspection can be repaired and restored to useful condition. During the repairing process, slings will be refurbished, proof tested and recertified, offering an economical alternative to new chain sling replacements.
Chain slings are mainly used for overhead lifting applications. Alloy chain, commonly 8600 series alloy, is subjected to quality control techniques surpassing those applied to lower grades of chain and is designed, approved and specifically recommended for overhead lifting. Alloy steel chains possess the strength, chemical content and mechanical properties necessary to meet government and industry standards. These specifications prescribe minimum elongation values, minimum proof test values, recommended working load limits and minimum statistical breaking strengths. Grade 80 [or System 8] is the most frequently used alloy chain and carries a hallmark. A new, maximum strength Grade 100 [or System 10] alloy is also manufactured. Different types of Alloy Chain Slings can be fabricated and are usually designated by a three character symbol, based upon the number of legs and types of components used in the assembly:
