Omelet wrote:
>
> So how do you feel about recycled steel?
>
> Is it simply a matter of forging temperatures?
>
> I'm very much a believer in recycling whenever and wherever possible...

Steel, asphalt, sugar. In every case it's easy to screw them up with
the wrong temperature sequence. In every case they have to be melted
completely and the impurities removed to refine (scrap steel is much
easier to refine than iron ore, ground road is much easier to refine
than crude oil, shattered sugar is much easier to refine than cane in
the field).

Get the melt and purify step right and the source no longer matters.
Get the melt and purify step wrong and you've carried the old problems
into the new product.