Grade 80 Chain Strength

So grade 80 is really 800 and grade 120 is 1 200.

Grade 80 chain strength.

Quenched and tempered before proof testing grade 80 chain specs have tensile strength twice of ordinary steel chain. Grade 80 chain is embossed using an 8 80 or 800. It is quenched and tempered before proof testing and the ultimate tensile strength is over twice that of ordinary steel chain. Finish is black armour coat meets or exceeds all nacm astm standards approved for over head lifting complete traceability due to.

You could reverse this formula to determine ultimate breaking strength if all you know if the chain grade. Grade 80 transport chain. Grade 80 chain is a heat treated alloy steel designed for high strength for overhead lifting and tie down applications. Grade 80 transport chain assemblies and binders offer superior strength and resistance to fatigue and abrasions over traditional grade 70 transport chain.

For a clear comparison of chain grades see our chain grade comparison chart. 1 2 grade 80 alloy chain per foot 4 2 out of 5 stars 3 b a products g8 3815tl grab hook with twist lock each end 3 8 grade 80 chain x 15 4 height 6 75 width 17 length. That number is the chain grade. So let s assume it is actually 12mm chain.

Grade 80 alloy chain is heat treated making it safe and rated for overhead lifting. The grade refers to the tensile strength in newtons mm 2. Grade 80 embossed p8. Considered premium quality chain it offers about a 25 higher work load limit over grade 80 chain.

Grade 80 should be 800 newtons mm 2. It is safe for overhead lifting. For fast identification peerless grade 80 chain is embossed usa and stamped p8. Grade 100 chains are embossed with a 10 or 100.

Our grade 80 assemblies are made in the usa and manufactured of alloy steel with a 4 1 design factor. It s also commonly used as a heavy duty tow chain. Tensile strength following heat treatment meets or exceeds all existing osha government nacm and astm specification requirements. Chain grades advertised by manufacturers are one tenth of the actual mathematical grades.

Peerless grade 80 chain meets the latest guidelines of the national association of chain manufacturers nacm and astm a391 a391m. I believe that would be 800 000 000 newtons m 2 or 800mpa. Determining chain working load limits. The 22 number is to convert newtons to pounds force.