Anyone need any Zinc black coating on fasteners?

[Deano]

Looking to send a few fasteners off for the zinc black treatment if anyone is keen.
I had all my turbo bike fasteners done. Also swingarm pivots and axles

It is a fixed cost for the first 10kg or so $45+gst last I got some done.
dembrittlement another $70+gst

So if anyone wants to tag in on my batch we can split up the cost

Any takers?

[stiffsimon]

Yeah Deano I'll be up for some of that. Looking at s/arm spindle, rear wheel spindle, chain adjusters, engine mounting bolts,etc. for the GSX. Wouldn't mind seeing the finished result before hand though but am definitely interested.

[Deano]

http://i1186.photobucket.com/albums/z368/deano179/E4586AD0-7F4A-45E0-80F5-59F38A4FC865-11271-00000B32B28DD749.jpg

[Large]

I wont be in this time, but is there a size limit for this sort of stuff?

[Deano]

Not real sure mate. What sort of size were you thinking

[Large]

200mm by 5mm plates maybe

Or suspension arms about the same size as a swingarm, but in steel and chromo.

[Deano]

Not sure probably would be ok but would have to ring them first.

[Gitzy]

Apologies if this is a stupid question but what does zinc black treatment do Deano? is it anti corrosion method of some sort...

[Deano]

It is just like normal zinc ('silver finish)but black

Yes anti corrosive. They tell me it is the normal zinc coating then gets a dose of black over the top. That is why the finish is not as black as you might expect cause coating black over silver dosent cover perfectly

[Large]

Why the debrittlement?

[Redmohawk]

If hardened bolts are zinc plated , (400 deg temp) temper of bolt may change ? Happy to be corrected its a guess.

[TurboKat]

Why the debrittlement?
Electroplating introduces microscopic bubbles of Hydrogen into the parent metal, parts have to be baked at high temp to diffuse the Hydrogen & restore the structure of the metal, that's why you don't plate structural or suspension parts.