Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 04-07-2022, 10:10   #1
Registered User
 
raingolfer's Avatar

Join Date: Jun 2016
Location: Pacific Mexico
Boat: 1997 Bavaria 46E
Posts: 50
galvanized chain - now discolored

Why did part of our chain turn a yellowish color after cleaning in vinegar?

This is 5/16" Acco galvanized chain purchased in 2018, installed on boat in 2019.
We seldom anchor where we use more than 40-50 meters of chain, often it's 20-30 m.

We cleaned the first 50 meters of chain soaking sections at a time for 2-3 days in a bucket with white vinegar. Most of the chain returned to a nice gray. But the area from about 12 meters to 28 meters, turned this bronze/yellow color that almost looks like iron oxide. However it doesn't clean off with vinegar. It is the area that had the most soft growth on it. We did use a microfiber towel to wipe this area of the chain to assist in cleaning.

While this dirty area of chain was in the vinegar, it "boiled", some kind of chemical reaction that created foam.

What might of happened?
Attached Thumbnails
Click image for larger version

Name:	chain 2.jpeg
Views:	50
Size:	134.0 KB
ID:	260521   Click image for larger version

Name:	chain 1.jpeg
Views:	42
Size:	131.5 KB
ID:	260522  

__________________
Doug and Mary
S/Y Cassiopeia
Bavaria 46E (1997)
raingolfer is offline   Reply With Quote
Old 04-07-2022, 16:46   #2
Registered User
 
rgleason's Avatar

Join Date: Mar 2012
Location: Boston, MA
Boat: 1981 Bristol 32 Sloop
Posts: 16,496
Images: 2
Re: galvanized chain - now discolored

You've lost your galvanizing I think. I did that to old chain just for a few hours, but it had white corrosion to begin with, then when washed off it was simply shiney metal that soon turned light rust.

Maybe have it regalvanized?
rgleason is offline   Reply With Quote
Old 04-07-2022, 17:54   #3
Marine Service Provider
 
Emmalina's Avatar

Join Date: Jan 2012
Location: Thailand
Boat: Herreshoff Caribbean 50
Posts: 964
Re: galvanized chain - now discolored

Who suggested cleaning it in vineger (acetic acid) ? You can but you need to flush it with LOTS of fresh water after.
__________________
Steve .. It was the last one that did this !
Emmalina is offline   Reply With Quote
Old 04-07-2022, 20:07   #4
Registered User

Join Date: Apr 2007
Location: Australia
Boat: Island Packet 40
Posts: 5,483
Images: 7
Re: galvanized chain - now discolored

Galvanizing of anchor chain is usually done by dipping it in molten zinc. Zinc reacts vigorously with pretty well all acids. The bubbling was the hydrogen being produced in the reaction.
__________________
Satiriker ist verboten, la conformité est obligatoire
RaymondR is offline   Reply With Quote
Old 04-07-2022, 20:54   #5
Registered User
 
deblen's Avatar

Join Date: Oct 2014
Location: Grand Manan,N.B.,Canada N44.40 W66.50
Boat: Mascot 28 pilothouse motorsailer 28ft
Posts: 2,522
Images: 1
Re: galvanized chain - now discolored

https://byjus.com/questions/what-hap...o-acetic-acid/
__________________
My personal experience & humble opinions-feel free to ignore both
.
deblen is offline   Reply With Quote
Old 05-07-2022, 03:19   #6
Registered User
 
Sailmonkey's Avatar

Join Date: Sep 2009
Location: Houston
Boat: '76 Allied Seawind II, 32'
Posts: 9,490
Re: galvanized chain - now discolored

For what reason are you cleaning g chain with vinegar?

My guess is you “washed” off the zinc and will now need to re-galvanize the chain.
Sailmonkey is online now   Reply With Quote
Old 05-07-2022, 21:12   #7
Registered User

Join Date: Jun 2018
Location: Melbourne, Australia
Posts: 453
Re: galvanized chain - now discolored

Vinegar is often used as an "etching" stage when applying paint to a galvanised surface such as gates, fencing etc.
NevilleCat is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
G43 Industrial Galvanized vs. G40 Galvanized Anchor chain zboss Anchoring & Mooring 21 17-12-2018 08:10
Cabin Table Refinishing - What to do with discolored "spots"? TampaBaySailor Construction, Maintenance & Refit 20 09-09-2017 12:24
Discolored Gear Songline Engines and Propulsion Systems 19 19-12-2008 12:17
Hour meter discolored -can't see through it bob_deb Construction, Maintenance & Refit 7 10-12-2008 15:06

Advertise Here


All times are GMT -7. The time now is 04:21.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.