Rusty ball
I Bought this ball hitch less than three months ago and it’s only sparingly used. But I wonder why this got Rusty here pretty quick. It’s even rated 30,000 pounds Anyone experience this? I...
Forum Discussion
enblethen wrote:
Heat treated raw steel.
From website
"Fits 2-5/16" couplers and accepts up to 30,000 lbs. GTW
Constructed from high-strength raw steel
Heat-treated for optimum wear resistance
Zinc-plated hex nut and helical lock washer for secure mounting
Features fine threads for superior holding strength
Tested for safety to meet U.S. VESC V-19 specifications"
Heat treated is not hardened. Heat treated is stress relieved so it don't fracture under stress.
If the ball was hardened (and that would only be case hardened not through hardened), it would stress crack. Hardened steel is also brittle. The ball is normalized, not hardened.
