Black Phosphate

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Mar 19, 2009 | 09:58 AM

71white

Thread Starter

Racer

Joined: Jul 2006

Posts: 254

Likes: 1

Black Phosphate

Is is possible to do black phosphate at home and is it practical? I didn't see anything at caswell.com.

Mar 19, 2009 | 10:33 AM

gliot1

Safety Car

Joined: Jun 2002

Posts: 4,757

Likes: 2,508

From: Buckeye, AZ

St. Jude Donor '12-'13

Eastwood makes a kit to do this......I believe it is fairly cheap too.

Mar 19, 2009 | 04:16 PM

Alan 71

Team Owner

Joined: Sep 2006

Posts: 31,274

Likes: 4,366

From: Westminster Maryland

Hi 71,
The process is called 'parkerizing'.
The very dark gray (black) is manganese and the lighter gray is zinc.
It's quite straight forward to do at home.
Check out Palmetto Enterprises for info and supplies.
Regards,
Alan

PS: I believe what Eastwood offers is Zinc Phosphate paint.

Last edited by Alan 71; Mar 19, 2009 at 04:19 PM.

Mar 19, 2009 | 06:34 PM

redman76

Melting Slicks

Joined: May 2006

Posts: 2,590

Likes: 403

From: Nashville TN

St. Jude Donor '09

Here is the kit Eastwood sells . . . I've been eye-balling that one myself:

Eastwood Metal Blackening Kit

Mar 19, 2009 | 09:23 PM

Dave Witman

Burning Brakes

Joined: Oct 2004

Posts: 801

Likes: 17

From: Middletown Delaware

Tried eastwoods kit and its was ok. the one from caswell works better lasts longer and much cheaper. Dave

http://www.caswellplating.com/kits/black.htm

Mar 20, 2009 | 11:12 AM

71white

Thread Starter

Racer

Joined: Jul 2006

Posts: 254

Likes: 1

Thanks!

Mar 20, 2009 | 04:21 PM

Alan 71

Team Owner

Joined: Sep 2006

Posts: 31,274

Likes: 4,366

From: Westminster Maryland

I believe the metal backening kit is 'black oxide' which is quite a different coating than 'parkerizing'/ phosphate.
Regards,
Alan

Mar 20, 2009 | 06:55 PM

Oldguard 7

Melting Slicks

Joined: Apr 2002

Posts: 2,337

Likes: 14

From: Norfolk VA

I'm dumb on this one. Is this the process that is used to blacken chrome? I have some black chrome C6 replica wheels and i would like to blacken my door handles to match them.

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Mar 20, 2009 | 08:22 PM

68AIR

Burning Brakes

Joined: May 2006

Posts: 763

Likes: 0

From: FBO Florida

Black phosphate was a way of preventing corrosion on metal used by GM and others. Black phosphate has a crystaline gray/black appearance on close exam. Black oxide is black and very uniformly dark. There was a person by the name of Grant Wong who was selling the BP solution on ebay which was applied hot to bare metal by using a crock pot or similar to heat the solution. Afterward a coat of wd40 was applied to keep the finish longer. I had a set of male hood locks done for my C3 way back and they came like nos.