Steel or brass nuts

[keithcat]

Hi folks
Just a simple question,I am making a start on the steam and exhaust pipes in the smokebox. The slim nuts on the copper pipes i think should be brass or similar. Will steel do here. Its just that I want to make some simple bits, from a change from the valve gear and I have no brass in the size needed.

Mike

[baggo]

Hi Mike,

I shouldn't think using steel will be a problem. They are only there to lock the assembly together so that the steam and blast pipes don't flop about. They are not exposed to steam so won't rust away.

John

[russell]

Brass against steel is always a good combination in hot damp conditions. I used to use brass nuts on the (steel) exhaust manifold studs on my vintage cars and never had problems with them siezing - unlike steel nuts which often have to be cut off!
Should be fine.

Russell.

[keithcat]

Thanks guys, steel it is then.
Mike