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Is it mild steel ?
In that case you can also carburize it, that means wrapping the workpiece in powdered charcoal in a crucible or a steel container and heating up the whole stuff to 900ºC for a few hours. After that, quench the cherry red hot object in oil or water as soon as possible.
Then reheat it to about 200ºC and allow it to cool.
There will be a hardened surface with a higher carbon content on the object.
I made a hammer that way.
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