This is going to be about forensics and re-purposing,hope it won't offend anyone...
Remnants of a wagon wheel were donated to the forge for possible material.
Woodwork is rotten to the core,parts exhibit traces of lathe,and other mechinised working methods.NO idea how old it'd be.Local steamboat traffic was going strong from 1890-ies,so from there onward till they stopped using wagons,into 30-ies or a bit later...
https://imgur.com/NWpSgU7
I cut a sample for testing from "tyre",as they used to say.Upon the break-test sample does not exhibit the fibrous nature common to some grades of WI.Bad photo,but the break is abrupt;grain structure is very large and somewhat uneven.
https://imgur.com/PSiu5B8
Then on to spark-testing.first a known sample of A36/1018 or similar,we know that the C content is around under 0.2%.
https://imgur.com/SlcQCaB
And here's the wagon tire:
We can see that possibly it has somewhat less C,but it's not severely low-carbon alloy;there're still carbides there striking the carborundum particles,making little starry explosions
https://imgur.com/a/Y3A7JAt
HERE,to compare,we have some truly Low-carbon WIhttps://imgur.com/uvwbmds
There're no starry sparkles at all;only Fe itself burns up in a streak having encountered the abrasive.
And here that same last sample of nearly-carbonless WI in brek-test.The "fibrous" nature of material is clearly visible.
https://imgur.com/1aLfyuV
So now we know that the tyre material(3 1/2" x 1/2")is some old variety of Bessemer steel,with C content equal to about 15+%...