[SEL] Hot tube material

[Steve Gray]

Hi Arnie, Luke, Peter & Curt -

   I kind of suspected that a good grade of stainless might be involved. 
Having spent the last 4 years of my employment machining Inconel,  
Nitronic, Monel and various grades of stainless, I feel everyone's past 
experiences with machining the stuff! (Sadistic is an accurate 
description, Curt!!)  I may even have a chunk of Nitronic kicking around 
in the material bin, but whatever the case, thinking about it, I agree 
something along those lines should suffice well. I doubt it would have 
to be too awfully thick to do the job. It just needs to be a short stub 
to act as a glow plug for starting this monster. Now you guys got me to 
thinking....!

Thanks,

 Steve

-- 
Steve Gray
Member EDGE & TA, Br. 13, 27 & 49
Sonora, California USA
e-mail:   segray at mlode.com
Home page:   http://www.oldengineshed.com



Curt wrote:

> Steve,
> Inconel 718 might be the alloy you are thinking of. It is a nickel 
> alloy well suited for hot work. I use it for some of the hot rolling 
> mills in our foundry. Unless you are up for a sadistic machining 
> experience you might just try to buy one already made. It is 
> absolutely miserable stuff to machine as it work hardens as you turn 
> it/drill it. It is also 8x as expensive as H13. You'll probably be 
> able to buy several finished hot tubes for what you could buy the 
> tooling for.
> We also use H13 which is a very good hot work tool steel. While not 
> easy to machine either, it is far easier than Inconel.
> Perhaps the OFES guys can say if they have luck using H13 for hot 
> tubes.....
> Curt Holland
> Gastonia, NC
>
>
> Steve Gray wrote:
>
>>   OK, guys. I know this has been covered before and I've perused some 
>> of the available list archives to no avail, so I'll ask a repeat 
>> question. What's the general opinion about the type of material used 
>> for hot tubes? I'm in the process of sanitizing the Fairbanks "Y" oil 
>> engine I just bought and will be replacing the starting hot tube. 
>> Easily made, but would like to come up with the proper material. My 
>> feeble brain cell SEEMS to remember something about nickel being used.
>> Thanks in advance.
>>
>> - Steve
>>
>
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