inox / silicon bronze screws

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inox / silicon bronze screws

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pietro

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Since: Mar 01, 2005
Posts: 4

(Msg. 1) Posted: Tue Mar 01, 2005 3:56 pm
Post subject: inox / silicon bronze screws
Archived from groups: rec>boats>building (more info?)

I'd like to know what the main differences are between inox screws and
silicon bronze screws (in boatbuilding). Vantages and disadvantages. I ask
this question, because it's easy to find inox items here in my town, while
there is no choice of silicon bronze screws

thanks

>> Stay informed about: inox / silicon bronze screws

cerskine

External

Since: Dec 29, 2004
Posts: 7

(Msg. 2) Posted: Tue Mar 01, 2005 3:56 pm Post subject: Re: inox / silicon bronze screws [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

Generally, stainless steel screws should only used above the waterline. Bronze can be used above or below the waterline. There is more information in the notes at the bottom of this page: http://www.jamestowndistributors.com/ak/Fasteners/ >> Stay informed about: inox / silicon bronze screws

pietro

External

Since: Mar 01, 2005
Posts: 4

(Msg. 3) Posted: Tue Mar 01, 2005 4:28 pm Post subject: Re: inox / silicon bronze screws [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

"pietro" ha scritto nel messaggio > inox screws sorry, I mean: stainless stell >> Stay informed about: inox / silicon bronze screws

James2

External

Since: Jul 04, 2003
Posts: 56

(Msg. 4) Posted: Wed Mar 02, 2005 9:58 am Post subject: Re: inox / silicon bronze screws [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

"pietro" wrote in message > >> inox screws > > sorry, I mean: stainless stell > > Stainless steel is only stainless if there is oxygen present. Below the waterline, stainless becomes much like swiss cheese... Called crevice corrosion. Stainless also comes in different grades... the more expensive of which is better resistant to crevice corrosion..and can be used for things like rudder fittings where the water is disturbed/turbulated a lot and thus a little oxvegen gets to the fitting... But i bet the stainless that is available locally is NOT the higher grade stuff. You spent how long and how much on the boat? The percentage of the total cost in time and materiels that the screws represent? It is seldom worth skimping on the screws...... sorry. >> Stay informed about: inox / silicon bronze screws

pietro

External

Since: Mar 01, 2005
Posts: 4

(Msg. 5) Posted: Wed Mar 02, 2005 11:21 am Post subject: Re: inox / silicon bronze screws [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

thanks to everybody! I’d like to repair a quite wrecked wooden boat (I got her as a present); many screws were missed along the keel; the boat is for recreational activities; I’m living in countryside and therefore I’ll have to tow her with my car to the see; I don’t intend to leave her in the water all the time; I’m looking for an arrangement; what about brass screws? >> Stay informed about: inox / silicon bronze screws

pietro

External

Since: Mar 01, 2005
Posts: 4

(Msg. 6) Posted: Wed Mar 02, 2005 12:11 pm Post subject: Re: inox / silicon bronze screws [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

....or : to fasten the lap to the keel, is it possible to use copper nail NOT rivetted but simply nailed into the keel? maybe with a bit of epoxy glue (I mean: drilling the keel and gluing the nail in the hole)? please don’t be shocked, I’m a woodworker (hobbyist), not boatbuilder >> Stay informed about: inox / silicon bronze screws

Brian Whatcott

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Since: Jun 22, 2003
Posts: 434

(Msg. 7) Posted: Thu Mar 03, 2005 4:20 am Post subject: Re: inox / silicon bronze screws [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

On Tue, 01 Mar 2005 14:56:49 GMT, "pietro" wrote: >I'd like to know what the main differences are between inox screws and >silicon bronze screws (in boatbuilding). Vantages and disadvantages. I ask >this question, because it's easy to find inox items here in my town, while >there is no choice of silicon bronze screws > >thanks > Silicon bronze screws won't rust - ever. Their initial strength is lower, usually. Brian Whatcott Altus OK >> Stay informed about: inox / silicon bronze screws

Mac3

External

Since: Aug 19, 2004
Posts: 83

(Msg. 8) Posted: Thu Mar 03, 2005 9:25 am Post subject: Re: inox / silicon bronze screws [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

On Wed, 02 Mar 2005 10:21:49 +0000, pietro wrote: > thanks to everybody! > > I’d like to repair a quite wrecked wooden boat (I got her as a present); > many screws were missed along the keel; the boat is for recreational > activities; I’m living in countryside and therefore I’ll have to tow her > with my car to the see; I don’t intend to leave her in the water all the > time; I’m looking for an arrangement; what about brass screws? Never use brass on a boat. Brass has zinc and copper in it. These two react in the presence of an electrolyte (e.g., salt water or even moist salty air) turning the zinc into zinc oxide (a structurally weak white powder) with copper around it. Overall this weakens the brass so badly that it will just about fall apart. Nickel plated zinc is another material that should never be used on a boat, for similar reasons. For some reason, a lot of cheap boats use nickel plated zinc fittings. --Mac >> Stay informed about: inox / silicon bronze screws

mike76

Joined: May 20, 2011
Posts: 1

(Msg. 9) Posted: Sat May 21, 2011 2:18 pm Post subject: Re: inox / silicon bronze screws [Login to view extended thread Info.]

Don't use brass screws below waterline. If you want to have peace of mind on the open sea, You must use silicon bronze screws. >> Stay informed about: inox / silicon bronze screws

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