Re: [Phys-L] Blue color heated steel

[Joseph Bellina <inquirybellina@comcast.net>]

It comes from optical interference created by a thin transparent oxide layer on the surface.  I’d check the metallurgy literature 

Best

Joe

Sent from my iPhone

> On Oct 4, 2021, at 10:26 AM, M R Carabajal via Phys-l <phys-l@mail.phys-l.org> wrote:
>
> Hello
>
>
>
> I would greatly appreciate a bibliographic indication on the subject of
> heating steel. I have not been able to find a clear explanation of the
> reason for the blue color, that steel presents when heated to about 600
> Kelvin. That is, to substantiate the deviations of the blackbody heating
> spectrum.
>
>
>
> Thanks very much for your attention.
>
> Roberto
>
>
>
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