Grade 70 or 43

[rcrcomputing]

The working load limit of Grade 43, 3/8" chain is 5400 lbs. The working load limit of Grade 70, 5/16" chain is 4700 lbs.

Grade 43 Chain Specs.

Grade 70 Chain Specs.

I stand corrected. I'd remembered them being closer than that and should have checked..

I might add, 5/16 43 is 3900 lbs so it appears 5/16 grade 70 will put you right between grade 43 5/16 and grade 43 3/8" and at 2/3'rds the weight of 3/8's. I'll all for it!

 

[JB4310]

I stand corrected. I'd remembered them being closer than that and should have checked..

I might add, 5/16 43 is 3900 lbs so it appears 5/16 grade 70 will put you right between grade 43 5/16 and grade 43 3/8" and at 2/3'rds the weight of 3/8's. I'll all for it!

I understood what you were getting at, no it wont substitute the 5400# rating of 3/8 G43, but if you needed 4700# or less rating then you wouldn't have to go up to 3/8 from 5/16 you could just go with the G70 5/16.

4700# rated chain on 4 corners of a tractor would be more than enough for any CUT, but most go for the 3/8, myself included.

It is heavy, not the individual pcs, but I put my four 7 footers and 4 binders in a pail for storage, all fit nicely, just couldn't lift it without hurting something so I divided them into 2 pails and they are still heavy.

You mean like this nice golden finish?

I needed a short piece of logging chain so I bought the unplated grade 43 and plated it at work. This is better then any plating you will get of the shelf. It is a zinc-nickel alloy (87/13) with chromate topcoat finish. We use it on aircraft bearings.
QUOTE]

Sweet how's it done? with electro or hot dip? I'd be tempted to do all my unplated tools with the stuff, like shovels and rakes and what not


JB.