I've got two springs of 5160 with 1 and 3/4" coils.
They are brand new.
They're BIG.
Imagine what you could get out of 1 3/4" round when forged to the dimension of your choosing.
Calculator says these weigh 300 pounds.
Lots of steel these days goes for 3-4-5 dollars a pound.
I'll sell these BOTH for 2 bucks a pound.
I know where they came from. I know who made them.
They were off spec for their designed application and were scrapped. (They were actually designed for the springs in the bottom of hydraulic cylinders!)
I will only list these for a few weeks.
Then, I'm going to do something else with them.
(That picture was taken about 8 years ago. The springs are a little rusty now. I'm heavier - the springs are not.)