Mixing anchor chain?

single

single

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I was thinking of adding stainless steel chain between the hawsehole and the anchor for cosmetic reasons and to stop rust marks.Would this cause any significant corrosion problem at the joins?
 
The general rule below water is not to mix metals. If you have a stainless anchor and shackle, then there will be no corrosion problem, otherwise, the stainless will quite quickly eat away the galvanising on the other components.

Rob.
 
single said:
I was thinking of adding stainless steel chain between the hawsehole and the anchor for cosmetic reasons and to stop rust marks.Would this cause any significant corrosion problem at the joins?
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Unlikely to be significant, many people use stainless shackles and/or swivels in galvanised chain. Just check it regularly as you use it and cut out a few links if it starts getting bad.
 
corrosion coudl be an issue, but a stainless section will have different strength characteristics from galvanised. It may literally be a weak link.


When I say weak...
 
What sort of link are you proposing between the SS and galvanised chains to join them? It might prove to be the weakest link.
 
Somewhere there is a study on those links (Viv?). The good ones are half bad and the bad ones useless IIRC. There are some issues about strength and corrosion resistance with the steel types chosen. When pull gets to tug, your new link will see the load.
Having said that, my chain rode is in two 25 m lengths joined by what I hope is a good one. I keep a careful eye on it.
 
The corrosion issue is not that great between galvanised chain and stainless steel components. Usually it is confined to loss of a little zinc on the last few links of the chain.

When using C-links to join chain I suggest you look at the info on my website. There is an enormous difference between the good ones (Crosby) and some others. However, I'm not sure how good the galvanising is on any of them and there can be serious galvanic corrosion between chain and links in some cases. I know nothing about this one but it's a great example.
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vyv_cox said:
The corrosion issue is not that great between galvanised chain and stainless steel components. Usually it is confined to loss of a little zinc on the last few links of the chain.

When using C-links to join chain I suggest you look at the info on my website. There is an enormous difference between the good ones (Crosby) and some others. However, I'm not sure how good the galvanising is on any of them and there can be serious galvanic corrosion between chain and links in some cases. I know nothing about this one but it's a great example.
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that is what I'd expect you'll see at the joint
 
single said:
I was thinking of a chain link? It not as if there is that much load on it that near the anchor.
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That would only be true if you were using the chain to hold the anchor (off the bottom, for example). If, on the other hand, you were using the anchor to hold the boat (as most people do), that link would have to transmit the full force involved, and if it broke you would not only lose your anchor but possibly your boat as well.
 
A lot has been said over the year about C links , and as we all know there good and bad in almost every thing one buys , the only comment I would make is that I have been using C links for more years that I like to remember and only twice have I remove an old link and replace it , what is important is buy a good quality one , some thing like VYV suggest and that you keep an eye on them and at any time you feel unhappy change them .
 
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