Recycled material makes for poor quality cast iron. A auto salvage yard north of here also had a line up of 100 old tractors from the 20's on. John Deere is in town and they bought them all. Good old single use cast iron.
Yeah. On one hand I want to scream from the rooftops to all the greenies that steel is infinitely recyclable unlike the plastic garbage we are inundated with it. But on the other hand ,without proper alloying and testing its really inferior.