Titanium Swivel

[SVNeko]

At the risk of starting another swivel war, I would like to know if anyone knows anything about this swivel. Any comments, including uninformed speculation, are welcome. It seems to deal with the side pull issue and should be quite strong, being made of titanium.

0019405 Titanium Titan Anchor Swivel with Shackle fitting 3/8 inch Chain - Allied Titanium Market

[Cheechako]

6AL4V Ti is very strong, very tough and very corrosion resistant.. I've never seen Ti polished like that... in fact didnt think it could be polished to any great extent. Ti is not a good bearing surface though, galling between two ti rotating pieces would occur fairly fast. Still.... looks like a good bet! Howe much are those?

[atoll]

do they do titanium anchor chain and anchors as well?

[s/vfootloose]

26 kg anchor for only

[s/vfootloose]

26 kg anchor for only $5558.13

[atoll]

Originally Posted by s/vfootloose

26 kg anchor for only $5558.13

guess i need 2 of them

i wonder what the equivalent to a 45kg bugal would be?
weight or surface area?

[roverhi]

Looks like another doodad for those with too much money to burn. Price is conspiculously absent and the polishing is totally a cosmetic addition. The addtional cost of polishing is probably more than most people have in their entire ground tackle. Titanium is a great material for marine use but just the word titanium seems to quadruple the price, not the cost to manufacture, of something made from it.

[Stumble]

Rover,

While you are correct that parts typically cast (like anchors) are much more expensive than steel comparables, parts that are typically machines (bolts, nuts, chainplates, ect) can be similarly priced to stainless. The issue is that Ti cannot be cast in air because it absorbes oxygen, causing embrittlement (this is the same reason it has to be TIG welded).

However when compared to stainless parts titanium will never corrode. And by never I mean that the navy takes original titanium parts off of decommissioned ships, and reinstalls them on new ships. This is why titanium is quickly gaining ground in the marine industry. Not for every fastener, but for those things that absolutely cannot be allowed to fail. Like chainplates, through hull fittings, mast tangs, ect. The moderately higher price than 316 stainless (depending on the part between 15-30%) as compared to a part that can reasonably be relied upon to last for not just the life of your boat, but the one that replaces it as well.

[AllezCat]

Originally Posted by Cheechako

...Ti is not a good bearing surface though, galling between two ti rotating pieces would occur fairly fast...

by fairly fast - years - months?
What about scraping against the right angles of a galvanized anchor slot, anchor chain and stuff on the bottom?
Although stronger than ss and will not rust. Will it tear apart?

[mikefp60]

On an anchor swivel the galling would not really be a problem. Its not a constantly rotating device. Those are CAD renderings though. Not pictures of polished parts. Its a bear to machine. Made welding horns for ultrasonics from Ti. Tough stuff and very tough to polish. We only polished the bare minimum contact areas. Cryptonite we called it.

[Jim Cate]

Besides the missing price, there is no listed SWL nor breaking strength. If this is a legitimate product one would expect those features to be prominently displayed.

Looks like a nice bit of gear, but it makes me wonder...

Cheers,

Jim

[Cheechako]

Strong, light , non corrosive... Yes. Can be crack prone if not manufactured with great knowledge. under a microscope, Ti looks a lot like cast material... even when it's not. Rotating or sliding parts together will gall pretty fast... make that REAL fast! Give it any chance to propagate a crack and it will. However, done properly it;s cool! Turns an ugly flat grey pretty fast. I would think casting it for an anchor would be a great use, however, as mentioned, it would have to be cast in an atmosphere of Argon or vacuum... so I guess too expensive.

[bobconnie]

GEE !! why use something like that, on a galvinized chain and anchor or even a ss anchor with Galive chain!! whats wrong with good old galivinized Stuff ?? been working for more years then even I can remember !! I sorta think stuff like this is like most fishing lures, meant to catch fishermen not fish !! make it trick and jack the price up !! LOL Personaly I carry lots of new galive stuff and replace when needed, its much cheaper and lasts just as long as the trick stuff !! and for the price of the fancy stuff I can carry years worth stuff I know works just fine !! Just my 2 cents

[Nicholson58]

Originally Posted by AllezCat

by fairly fast - years - months?
What about scraping against the right angles of a galvanized anchor slot, anchor chain and stuff on the bottom?
Although stronger than ss and will not rust. Will it tear apart?

Grade 5 Titanium has a yield of 120,000 psi and a tensile of 130,000. That is realtively little range between yield and rupture. You won't bend it around like softer metals. In a straight pull your chain will probably go first. If its levered around something you would increase the stresses.

Just now replacing my chainplates. 1983 installed and they had heavy tea stains and a row of tear-on-the-dotted-line pits at just below deck level. Also looks like a micro crack in the same area. 202.00 each for 1/2 X 2-1/2 X 24. I will finish them in the machine shop where I work. Scotch-Bright wheel will put a nice butler polish on them.
www.titanium.com Make sure you never tell the sales guy its for a boat. Price variation between 4 sources was 2:1

[Stumble]

Kind of a strange time to do this...

I just accepted (about an hour ago) a position as a salesman for Allied Titanium, and wanted to make the thread aware of that. Note that I actually did not have a business relationship with Allied (other than as a customer) at the time I made all previous comments on this thread.

I will need to check the forum rules on manufacturers representatives using the forum, before continuing to add to the conversation, but if I can be of any help, or if you would like more information please feel free to contact me by PM.

Greg Rubin
Allied Titanium