grade 100 alloy chain slings with approximately 25% higher strength than grade 80, grade 100 chain is used primarily as a sling component for overhead lifting. Grade 100 chain can be used for all of the same applications as grades 30 through 80. Made in america, cm herc-alloy products are made of superior triple alloy steel that provides the best strength-to-weight performance in the industry. Herc-alloy 100 chain meets astm a973 standards while components, such as hooks and hammerloks, meet astm a952 standards. Each sling is individually serialized for traceability. Proof test certificates are provided with each sling. Meets nacm, asme, and osha standards for overhead lifting.