Chains. Grade 70, 80 or 100. what do you have and why??

It should end it, and there no debate.
Anybody who uses anything other than G70 chain for load security is an IDIOT!!! Yes, I'll say it to your face, it's not a debate, it's metallurgy and physics.
But hey, some guys get better fuel mileage at 70 than they do at 60...lmao, that's physics too, good luck convincing me.
Can you use case hardened or tool steel to make a spring? NO
Can you use spring steel to make a wrist pin? NO
Metallurgy and physics, same comparison!

Doesn't need to be spring ride, I've seen dumb@$$es using G100 that broke on full air ride. Oh yeah, that IDIOT still argued with me about his precious G100, AND IT WAS BROKEN!!!

 

I was going to leave this alone but now I can't. I have respect for you but the idiot thing did it for me, you might as well call me an idiot then. I've used grade 8/10 since 2001, the contruction company I used to work for runs 20 tractor trailers plus multiple other trucks and they're 100% grade 100 that's where I got started in the practice. The run a 9 axle, an 8 axle and multiple 5 and 6 axles. So they haul just as big and heavy as you do as I have also. They have MILLIONS of miles with all sorts of loads in any kind of bad situation you can think of and they as well as I have no problem with broken chains. Do you have a degree in metallurgy? Because the only evidence you have to back up your claim in anecdotal, can you tell me in the situation that you described that grade 70 wouldn't have broken also? Of course you can't. You can talk all you want about metallurgy and what not the FACT is to brake a chain of any grade you have to exceed its ultimate breaking strength which is far higher in grade 80 or 100. You have absolutely no evidence to back up your claim except your individual experience and conclusions yet you're calling people idiots. 14 years of hauling with grade 80/100 and I've yet to snap a grade 100, 1/2 or 3/8 for that matter and I've been in a couple of bad situations. Their only way to prove your theory is in a lab under controlled conditions which you have not done anything else is anecdotal. I asked our rigging supplier (which is Blacco rigging in Columbus if you want to check or call crosbys help line) and the would be glad to explain it to you. However I doubt you interested in anything from them or anyone who disagrees. I was ok until the idiot part that's uncalled for.

 

+ crankshafts, connecting rods, and Gr80 chain, add some nickel in the soup for G100

 

I agree the higher grade chains are far more money. All my 1/2 inch chain is grade 70 except 2 older ones which are g80. I do have 2 12 footers of g120 3/8 that I use a lot because it's much lighter than 1/2 inch. Some back problems and elbow surgery have me using that when my 1/2 inch 5 foot chains won't reach. I don't skimp on securment by any means. All track machines get 1/2 inch on base of machine and then more as weight dictates.

 

I'm not going to argue about the grade of chains with any of you. I've been on here long enough to respect the guys that have done it for years everyday and haul far heavier than I ever will. I was just stating that I use 3/8 g120 in place of 3/8 g70 sometimes and for lifting heavy things off of lowboy

 

I guess I am an idiot too. I purchase G100 for any new chains that I buy. My G70 chains will stretch and bend links under normal use; this does not happen with the G100. The G100 also come with roll pin hooks that are much stronger than the standard cotter key pinned hooks on the G70 chains. The DOT book rates the various chain grades for securement purposes and I doubt they would do that if it was not a safe practice.

I appreciate the merit of the "too brittle" argument, but I believe that as long as I exceed the aggregate WLL required for any particular load using G100 chains, that I am not compromising anyone's safety.

 

Duplicate post.

 

Keep in mind, all else aside, stretching is a good thing. As the load settles during transport, elasticity will keep the chain tight. Kinda like comparing string to a rubber band.

 

Good point, except when they do not return to original dimensions.