Grade 70 Vs Grade 43 Chain

Grade 70 chain was specifically designed for the transportation industry.

Grade 70 vs grade 43 chain.

Therefore grade 70 chain is not intended for overhead lifting. The grade refers to the tensile strength of the chain. This is expressed in newtons per square millimeter a newton is approximately 0 224805 lbs. Comparing grade 30 grade 43 grade 70 grade 80 grade 100 and grade 120 chain paul hepworth says.

They must be marked with the wll also. This chain will elongate before breaking but does not have the properties needed for overhead lifting. Grade 70 chain is not approved for overhead lifting. Grade 70 chain is a heat treated carbon steel which is not as strong as a grade 80 or grade 100 which are an alloy heat treated steel.

The increased strength of grade 70 chain allows for easier handling and the reduced number of chains required by the north american standard for. It should not be used for overhead lifting. Grade 30 aka proof coil has less carbon and is good service duty chain. The higher the grade number the more steel alloying elements it contains and the more resistant it is to the variety of loads a chain encounters especially.

The grade 70 is 5 16 and is rated at 4700 lbs the grade 43 is 3 8 and is rated at 5400 lbs. Grade 70 chain typically has a 20 higher working load limit than high test chain or grade 43 chain. April 24 2018 at 1 39 pm. Grade 80 and grade 100 are specifically designed for safety and approved by osha and other governing agencies for overhead lifting.

It is used by truckers loggers and highway crews for load securement towing lashing and as trawler chain. Grade 70 chain or g70 is constructed of high strength heat treated carbon steel. Grade 43 aka grade 40 has higher tensile strength and abrasion resistance and comes with a higher price tag. G70 binder chains are also referred to as tow chains or transport chains spectrum 7 or system7.

Shop grade 70 chain. Grade 70 chain typically has a 20 higher working load limit than high test chain or grade 43 chain. We hope this is helpful let us know if you have any other questions. The thing you have to watch with h f.

4 thoughts on chain grades. G70 chains are also referred to as transport chain system 7 or spectrum 7. Another problem some have with chain is they buy big heavy duty chain and hook it to the rub rail or some other weak point on the trailer.