Grade 80 Chain Specifications
Crosby spectrum 8 alloy chain crosby spectrum 8 alloy chain hooks.
Grade 80 chain specifications. It s tested throughout the manufacturing process and meets and exceeds the specifications of nacm astm and osha. Laclede alloy grade 80 100 chain and attachments are produced to exceed the rigorous requirements of overhead lifting. There are no minimum. That number is the chain grade.
Our selection includes full drums of grade 80 chain half drums of chain and cut grade 80 chain by the foot as well as tie down assemblies. You could reverse this formula to determine ultimate breaking strength if all you know if the chain grade. Our grade 80 bulk chain is european made by kwb a pewag company. The astm states that alloy chain shall be able to elongate a minimum of 20 before fracture.
Currently alloy chain of grade 80 or grade 100 should be used for overhead lifting. Quenched and tempered before proof testing grade 80 chain specs have tensile strength twice of ordinary steel chain. Newer and stronger still is grade 120 chain. Chain grades for overhead lifting g80 g100 or g120.
Lacled alloy chain and attachments offer a design strength and elongation surpassing the national association of chain manufacturers nacm specifications as shown in the following charts. Grade 80 alloy chain. Any lower grade chain should not be used. Determining chain working load limits.
G80 alloy chain is rugged versatile high strength low weight chain. Chain grades advertised by manufacturers are one tenth of the actual mathematical grades.