[TheForge] Spring steel (and other) breaking in mild acid

[peter fels]

Clyde:
It's curious that this metallurgically erudite group has no clear cut, specific answer.
Summer vacation may be part of the reason though.

On Aug 28, 2011, at 5:27 PM, Clyde Wynia wrote:

> 
> Thanks for the answers, no solutions, but some good thoughts. I was hoping
> for an easy solution to this breaking, like just dissolve a couple of
> aspirin in the acid mix. I will just sand blast the springs from now on.
> 
> Clyde
> 
> Would that be sufficient to cleve used tool steel with a mild acid?
> Not talking about just added embrittlement.
> Always wondered about the steel tanks containing pressurized  hydrogen too.
> Familiar with it in welding.
> 
> 
> On Aug 26, 2011, at 5:34 AM, xlch58 at swbell.net wrote:
> 
>> On 8/25/2011 9:44 PM, peter fels wrote:
>>> That was my first thought, but it was very mild acid and did the same
> thing to bering races.
>>> I've cut and exposed hundreds, if not thousands of coil spring and garage
> door spring loops to heavy salt corrosion,
>>> and seen very , very few failures. A fair # of those were actively
> flexing in wind powered kinetic pieces.
>>> Salt water corrosion selectively seeks out small fatigue cracks.
>>> Clyde's results were very odd. He is an excellent observer.
>>> 
>>> 
>> Look up hydrogen embrittlement.
>> 
>> Charles
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