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Posted: 11/2/2007 9:30:17 PM EDT
| I just sent a BCG to be chrome plated and I'm thinking about having another BCG TiN plated. I know some here are against plating bolts and that's fine but whatI would like to know what is the advantage of TiN over Chrome plating? TIA |
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the titainium is meant to help tooling retain an edge and the medical industry uses it for corrosion resistance,it is also slightly harder than the chrome.chrome is used when tooling is going to be under a "load".used for it's "lubricity" .both can be used on cutters like dies, but chrome will outlast the other. what you are having done is nitriding not plating.plating goes on much thicker.for what we use these coatings for either will work just fine, we won't actually take the coatings to the harsh use they were meant to with stand.chrome nitrided tooling can be used on extrusion, forming and press dies and last because of it's slipperyness.I think the Tin parts were done on AR carriers because they are gold.the bling factor. people look down on it also because it was originally a plating and could chip or peel.now both are applied in a vacuum chamber as a nitride, and won't chip. this is PVD, physical vapor deposition unlike plating in a chemical bath. but either will work to make parts last longer and cleanup easier. the chrome will outlast the Tin though.tooling done with these 2 coatings can be re-applied when it is worn off and can be chemically removed if need be. some people will say it is un needed and maybe so.but it has a very good history in the tooling industry and works well.so it can only help when used in the right places of a firearm by inhibiting wear on the critical parts that come in contact with eachother. I don't work in coating with this stuff, but I am an end user and see how each holds up.I work with presses, dies and punches.punches are coated with Tin, dies are coated with chrome or a DLC of tungsten carbide.I prefer it but it could ruin a gun part from the high heat used in it's application. other than that I have done a lot of research into this, google it.look up other companies that do it.there are a lot of coatings. be kind with my mistakes 
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