Grade 80 Chain Strength

Grade 100 chains are embossed with a 10 or 100.

Grade 80 chain strength.

You could reverse this formula to determine ultimate breaking strength if all you know if the chain grade. The grade refers to the tensile strength in newtons mm 2. This is in line with the higher 4 to 1 design factor required by the international standards organization iso. Grade 80 embossed p8.

So let s assume it is actually 12mm chain. It is safe for overhead lifting. Grade 80 should be 800 newtons mm 2. Determining chain working load limits.

It is the most economical of the three chain grade types that are suitable for overhead lifting grade 80 grade 100 grade 120. So grade 80 is really 800 and grade 120 is 1 200. That number is the chain grade. Chain grades advertised by manufacturers are one tenth of the actual mathematical grades.

Grade 80 transport chain assemblies and binders offer superior strength and resistance to fatigue and abrasions over traditional grade 70 transport chain. Considered premium quality chain it offers about a 25 higher work load limit over grade 80 chain. Grade 80 alloy chain is heat treated making it safe and rated for overhead lifting. Our grade 80 assemblies are made in the usa and manufactured of alloy steel with a 4 1 design factor.

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. It s also commonly used as a heavy duty tow chain. Grade 80 transport chain. For a clear comparison of chain grades see our chain grade comparison chart.

I believe that would be 800 000 000 newtons m 2 or 800mpa. Peerless grade 80 chain meets the latest guidelines of the national association of chain manufacturers nacm and astm a391 a391m. Tensile strength following heat treatment meets or exceeds all existing osha government nacm and astm specification requirements. Grade 80 chain is a heat treated alloy steel designed for high strength for overhead lifting and tie down applications.

The 22 number is to convert newtons to pounds force. For fast identification peerless grade 80 chain is embossed usa and stamped p8. Grade 80 chain produced from a high quality alloy steel special induction heat treatment process that maximize strength and increase the elongation characteristics. Quenched and tempered before proof testing grade 80 chain specs have tensile strength twice of ordinary steel chain.