DIYbanter - View Single Post - What stainless might be in a catalytic oven

Ignoramus3825

On 2016-07-23, wrote:
On Fri, 22 Jul 2016 20:49:03 -0500, Ignoramus20626
wrote:

On 2016-07-21, Gunner Asch wrote:
On Thu, 21 Jul 2016 08:37:15 -0700, wrote:

On Thu, 21 Jul 2016 10:11:20 -0500, Ignoramus22707
wrote:

I just got paid money to dismantle and take home a huge old catalytic
oven. It was burning off something and then cleaning the smoke with
titanium dioxide catalyst pellets.

Inside of it there are heavy grates made of 1/4" strips of metal. The
grates were supporting the mass of pellets.

They are not magnetic but I wonder if they are regular stainless or
maybe some other grade of stainless to survive high temperature. They
have a reddish or golden hue to them.

i
They could also be a high nickle alloy or one of the refractory
alloys.

Thats what Id be betting my money on.

Is there some way to identify inconel without xrf gun, contrasting it
with stainless?

Say, if I expose it to a acetylene torch with oxidizing flame, and
sprinkle salt on top, would the results be any different with an
inconel sample compared to a stainless sample? Any other simple tests
that you can think of ?

i
Do you have a TIG welder? If so, melt a small area but use no argon.
If SS then the metal will "sugar". What that means is that the molten
metal will swell up and turn black, looking a lot like burnt sugar. I
don't know of any other alloys that do that. You might be able to do
the same with oxy/acetylene torch.

This is a SUPER EASY and GREAT idea! Just what I was looking for!

I have a TIG welder no problem...

I assume that inconel would not be sugaring, right?

i