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Farmall & IHC Tractors Discussion Forum
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Hydrogen embriittlment

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fastfarmall

02-08-2022 12:26:48




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Darn i am glad,the farm machinery company's haven't got any metal with that problem or have they? anybody know any companys that have?




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DR. EVIL

02-09-2022 15:31:35




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 Re: Hydrogen embriittlment in reply to fastfarmall, 02-08-2022 12:26:48  
Like TOM in Oregon says, hydrogen embrittlement is most common from chrome plating. Another form of steel failure by cracking is along a weld in the Heat Effected zone. It's a very real thing, I've seen lots of welded parts break along side the actual weld metal.

You can cook the hydrogen out of chrome plated parts, but I forget all the details about time and temp, Quick Goggle search gets you all the fasinating details.

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DMartin9N-2N

02-09-2022 09:09:18




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 Re: Hydrogen embriittlment in reply to fastfarmall, 02-08-2022 12:26:48  
Why am I reading this??

D. Martin in W. Tenn.



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Tramway Guy

02-09-2022 07:04:31




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 Re: Hydrogen embriittlment in reply to fastfarmall, 02-08-2022 12:26:48  
Hydrogen Embrittlement is also a very big concern in nuclear reactors.



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BarnyardEngineering

02-09-2022 04:18:26




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 Re: Hydrogen embriittlment in reply to fastfarmall, 02-08-2022 12:26:48  
What brought this on?



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used red MN

02-08-2022 22:34:49




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 Re: Hydrogen embriittlment in reply to fastfarmall, 02-08-2022 12:26:48  
I had to triple check to make sure GEO from TH had not wandered off into the IH zone. A while back I am pretty sure there was a post on here in tractor or tool talk about using a very high pressure air compressor for something or something down those lines. Cannot find that post now. I chimed in with something I know that raises some crazy high pressure but it takes some time. It is ..hydrogen induced cracking.. one of the places we find it is in vessel walls of the oil refinery processes that have a high concentration of hydrogen sulfide. Under certain temperatures and pressures the hydrogen molecules migrate into the steel. Over time a small pocket of hydrogen forms inside the steel. As this continues the pressure of the hydrogen collecting becomes so great the steel cracks internally. I have seen this on vessels with 3 inch thick walls. It seems impossible to me but it happens. Here is an article on it and a second short video I came across about hydrogen embrittlement in bolting.

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fastfarmall

02-09-2022 10:25:46




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 Re: Hydrogen embriittlment in reply to used red MN, 02-08-2022 22:34:49  
Thanks, that Worth guy put it into lay mans terms, thanks!



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Tom in OR

02-08-2022 22:28:20




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 Re: Hydrogen embriittlment in reply to fastfarmall, 02-08-2022 12:26:48  
Back in the 70's, I was an engineer at one of the major west coast truck manufacturers. Suddenly we began to get reports of not very old trucks dropping fuel tanks on the pavement. Not a good thing! Much immediate research was done in an effort to isolate the cause. To make a long story short, it turned out that this was occurring only on trucks with chrome plated tank support bands. Metallurgists got involved and determined that it was the chroming process that was causing hydrogen embrittlement of the steel bands, which led to premature failure. That, of course, eliminated the option for specifying OEM chromed fuel tank bands. Existing chrome bands were replaced in the field and the problem went away.

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fastfarmall

02-09-2022 10:14:05




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 Re: Hydrogen embriittlment in reply to Tom in OR, 02-08-2022 22:28:20  
Ok, Thats what i was wandering if it ever happens with the stuff we use in every days life! Thanks!



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Janicholson

02-08-2022 18:23:53




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 Re: Hydrogen embriittlment in reply to fastfarmall, 02-08-2022 12:26:48  
Very damp welding rods at a trailer manufacturer caused 10 ft of weld to be ground out and rewelded. It had cracks where the weld fused with the base metal. Jim



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560Dennis

02-08-2022 14:04:32




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 Re: Hydrogen embriittlment in reply to fastfarmall, 02-08-2022 12:26:48  
I have heard the term since the days at GE using hydrogen flame working tungsten filaments ,or some hard glass fires for the flare machine. You get that from hydrogen gas in stainless pipes or ( lets say wrong steel cause it to harden and crack ( rupture under pressure ) ! If your Farmall has that problem what are running for fuel ? Hydrazine? Causes cancer you known .Wow !



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fastfarmall

02-08-2022 18:08:06




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 Re: Hydrogen embriittlment in reply to 560Dennis, 02-08-2022 14:04:32  
My Farmall's are fine,i just heard about it, and happy we haven't had to encounter that.



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