Truck Chains and ratchet chain binders are tough tie down devices , both chains and binders are made of carbon steel, compare to tie down straps, the chains and binders have higher working load limit , say we compare grade 70 size 5/16” binder chain(which has 4700lbs WLL) to WLL 3333lbs 2” ratchet tie down straps , 3/8” chain(WLL 6600lbs) to 4” tie downs(5400lbs) , the grade 70 chains are stronger than ratchet tie down straps and the grade 70 load binders are stronger than grade 70 chains, 3/8”-1/2” chain binder has WLL of 9200lbs, which is much stronger than 6600lbs of 3/8” chains . Another reason chains and binders are considered heavy duty, is their design factor is 4:1 while webbing tie downs have 3:1 typical design factor, see “Design Factor” for reference .
The material recommended by National Association of Chain Manufacturer to make grade 70 chains is carbon steel, the criteria for base steel is Carbon 0.35% max; Phosphorous 0.040% max and Sulfur 0.050% max. When the material meets NACM recommendation, the manufacturing process are under strict quality control, and the final products meet or exceed DOT requirements, you can put the chains and binders on your 18 wheeler and haul away .
To tie down big rigs such as forklift, bulldozer is what we use grade 70 transport chains and binders for, tie down straps have no chance against these tough guys, the only choice is binder chains and binders , the most popular chain size for these kind of load are 3/8”, for some light equipment which is still too heavy and hard for straps 5/16” will be ideal chain size. 1/2” and up are mostly for really heavy stuff, for example, military applications, say to tie down battle tanks, you will definitely need 1/2” even 5/8” grade 70 chains to tie those bad boys down.
Grade 70 transport chains can be used on anything but overhead lifting, you need at least grade 80 alloy chains for overhead lifting. We see people use transport chains to drag the trees, tow the docks, and to tie down the logs out of the the trees, you can go around to find more creative uses of these chains and binders.