Sticking brass to mild steel

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Subject Author Date
Sticking brass to mild steel anotherid 07-29-2008
Posted by anotherid on July 31, 2008, 6:33 am
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Thanks for all the info, chaps. I went with Araldite, when it's set I'll
give
it a whirl and see how things hold up. I'll look into the solder
stuff and maybe
have a practise on some scrap.

The "thing" was just a clamping plate, steel to steel and I wanted a
bit of
brass inbetween to avoid too much marking of surfaces. Will there
be more
friction between brass and steel than there would be between
steel and steel?
Unlike surface materials do something friction-wise,
but I can't remember what!


Brendan


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Posted by Tony Jeffree on July 31, 2008, 6:47 am
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On Thu, 31 Jul 2008 05:33:16 -0500, anotherid

> Will there
>be more friction between brass and steel than there would be between
>steel and steel? Unlike surface materials do something friction-wise,
>but I can't remember what!

There will be less - see:

http://www.engineeringtoolbox.com/friction-coefficients-d_778.html

Steel to Steel coeff 0.8, steel to brass 0.35 for dry surfaces.
However, much less and almost the same if grease/oil is present.

I would suspect the coeff. will be less for "engraving brass"/steel.
(i.e., leaded brass, as used in clockmaking).

Regards,
Tony

Posted by dave sanderson on July 31, 2008, 8:45 am
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> Thanks for all the info, chaps. I went with Araldite, when it's set I'll
> give it a whirl and see how things hold up. I'll look into the solder
> stuff and maybe have a practise on some scrap.
>
> The "thing" was just a clamping plate, steel to steel and I wanted a
> bit of brass inbetween to avoid too much marking of surfaces. Will there
> be more friction between brass and steel than there would be between
> steel and steel? Unlike surface materials do something friction-wise,
> but I can't remember what!
>
> Brendan

Unalike materials are generally used in sliding things to ensure that
the
easier one to replace wears faster than the harder one to replace
(assuming the designer was awake at the time of design)

Dave

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