Metal keel strakes -- what to use?

[Bryan Rolfe]

Trying to decide what piece of metal to put on our Spindrift 10 keel(s) to protect them from abrasion when we drag up on the beach and just in general if we hit something. 

 

I was thinking something like this:
https://www.jamestowndistributors.com/product/product-detail/222

 

but bought much cheaper here:
https://www.onlinemetals.com/en/buy/brass/0-5-x-0-125-brass-half-oval-360-h02-extruded/pid/23728

 

Idea would be to grind out the front and read end to be rounded off and smooth, and then glue it down with 4200 or similar, and add fasteners along the length. I'd pre-drill and countersink all the holes first of course. 

My only hesitation is that it's brass, but I'm not sure how much that really matters for this application. 

[Designer]

Brass is normally bad word on a boat. This is one of the rare exceptions. Brass has been used to prevent chafe above water on boats for practically forever.

Under no circumstance should us Brass screws, they will dezincify in no time. Use bonze screws.

On a Sprindrift I always put a strip for about 2' 6" outboard under the chine where it bears on the bottom. 

[Hirilonde]

Brass, bronze and stainless steel are all close on the galvanic scale.  I used SS screws for my solid half oval bronze chafe strip along the keel of both of my boats.  if you are going to use screws, I would not use 4200 or anything related. Screws and glue do not reinforce each other.  I used polysulfide bedding and screws.  I can take mine off if I need to. 4200 is obscenely tenacious.

[Chick Ludwig]

Obscenely Tenacious would be a good boat name.

[Don Silsbe]

When I re-bed my keel strip, I will drill out the holes oversized, and fill them with epoxy thickened with WEST 404 filler.  Then, I’ll screw stainless steel screws into that without any goop.

[11N1683]

I used 14mm aramid tape and am very happy so far. It's incredibly abrasion resistant. I took a test piece outside to a piece of rough concrete and couldn't do any serious damage in 5 minutes