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NP3 and its uses!

caw308

New member
What is NP3? NP3 is a surface treatment for steel and metal alloys that combines sub-micron particles of PTFE (polytetrafluoroethylene), otherwise known as Teflon, with electroless nickel. NP3 - THE PROCESS

The application of NP3 is auto-catalytic, that is, not requiring any form of electricity. This process is preferable to standard electrolytic plating as all active surfaces are evenly plated, which is not the case with any electrolytically deposited coating. With Robar's well-equipped laboratory, coating thickness can be maintained to within .0002" or two ten thousandths of one inch, guaranteeing consistent quality coatings. With the PTFE evenly distributed and locked into the nickel-phosphorus matrix, NP3 is a true composite. If wear occurs, fresh particles of PTFE are exposed to keep the opposing surfaces lubricated throughout the life of the coating.

NP3 - THE ADVANTAGES

· Very accurate and even sidenav3 on all activated surfaces. · No lubrication is needed on opposing surfaces. · Cleaning is minimal, usually requiring only a soft cloth. · Permits firing for longer periods of time between cleaning, as dirt and powder residue has no wet or oily surface to cling to. · NP3 has a micro hardness of 48-51 Rockwell as plated (nickel matrix). · NP3 is very corrosion resistant, a 1 mil (.001) coating exceeding a 240 hour salt spray test. · NP3 has a high lubricity and low friction co-efficient; therefore, the life expectancy of a firearm will be greatly increased due to reduced friction wear.

The coating is strippable with no effect on the base metal, allowing other coatings to be applied or a new coating of NP3 to be applied, if necessary. · NP3 plated onto stainless steel guns will prevent galling, a problem common with stainless steel. · NP3 is a satin gray, non-reflective color ideal for all firearms. · NP3 can be plated to all internal parts giving a smoothness to the action not found with any other coating. · In cases where the NP3 has been perforated, the corrosion shows no tendency to spread or migrate under the coating. · NP3 is guaranteed against corrosion, peeling or flaking for the lifetime of the firearm.

NP3 and will adhere to aluminum, steel, and stainless steel. It cannot be applied finishes to Titanium, Scandium or 'pot metal'. Previously plated surfaces like nickel, hard chrome or anodizing must be stripped prior to plating.

NP3 is Electroless Nickel with embedded TEFLON. The TEFLON is bonded to the particles of Nickel at the molecular level providing self lubrication throughout the entire coating. The Nickel in this finish provides corrosion and abrasion resistance. NP3 is a soft metallic gray color, somewhat similar to bead-blasted stainless steel or titanium.

How does NP3 compare to Hard Chrome?

Hard Chrome is very hard, typically 70-74 Rockwell C scale. NP3 is 48-51 Rockwell C scale. However, Hard Chrome plates unevenly and typically builds on radiuses. Hard Chrome also has an adhesion of 12 to 15 thousand psi and little corrosion resistance. NP3 plates very evenly, is extremely corrosion resistant and has an adhesion of 30-60,000 psi! This is one of the reasons we can give it a LIFETIME guarantee against peeling and flaking.

NP3 Information by, Coatings Technologies, Inc

www.christianarmoryworks.com

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caw308

New member
[ame="www.youtube.com/watch?v=erFB15QvYW0&feature=youtube_gdata_player"]Nickel teflon Pt. 2 - YouTube[/ame]
 
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Narsil

Creepy-Ass Cracka
What do you charge for a NP3 upper/lower combo in 5.56 with an NP3 BCG? I was looking at a NiBo combo made by R Guns but I've read some less than enthusiastically positive reviews.
 

laxguy59

New member
I've always wondered the uses on this stuff on cans or baffles, would seem to make cleaning easier.
 

ATCDoktor

Well-known member
Cleaning is minimal, usually requiring only a soft cloth.

I have several firearms that have been coated with NP3 and have been very pleased with how it's performed for me.

That said, the above quote is not neccesarily true in all applications:

Here's my S&W Model 500.
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The frame and barrel have been coated in ROBAR's ROGUARD finish and the cylinder compensator and all screws are done in NP3 (to ease cleanup).

I quickly realized after firing the gun with its new high speed coating that cleanup was no easier than the bare stainless finish that comes from the factory:

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The areas of the cylinder that require the most attention (cylinder face and the forward area of the cylinder between the flutes) still require an inordinate amount of time spent with Flitz and a rag to clean up.

Just so you know, flitz and a rag will cause the normally soft grey finish to shine up like nickle/chrome.

Straight From Robar 5 years ago (non reflective grey):

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Today (you can see my reflection in the pic):

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green0

Active member
Flitz is great for cleaning, and the US Olympic team uses it for cleaning barrels, but it is a metal polish. Hence the shine.

If you used oil and a rag it would probably still be dull.

Most people use it for high wear resistance. I've seen some nice reviews regarding that.


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What is the maximum service temperature of NP3?
 

caw308

New member
Flitz is great for cleaning, and the US Olympic team uses it for cleaning barrels, but it is a metal polish. Hence the shine.

If you used oil and a rag it would probably still be dull.

Most people use it for high wear resistance. I've seen some nice reviews regarding that.


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What is the maximum service temperature of NP3?

We use it at well on barrels.

I don't remember off hand on the temp, but I will look it up and post it.
 

caw308

New member
NP3 Temperature rating;
The service temperature limitation on the NP3 and NP3 Plus coatings is 650F. The PTFE outgasses at that temperature. The nickel is good until approximately 1200F
 

ROBAR

Official ROBAR Account
I like your Revolver

ATC Doktor I am happy to hear that your revolver is still looking nice. As far as the cleaning not being easy that is a surprise to me. We have had great luck cleaning even AR bolts with minimum effort. I also noticed that your revolver looked very shiny on the cylinder. At the 5 year old pics it looked like NP3 a non reflective finish. What happened? I don't think it is possible for NP3 to lose it's matte finish. Did you polish it? That is perfectly fine if you did it looks neat and will still have the corrosive resistance from the phosphorus under plating but that may be why the dirt does not fall off like it is suppose to. The Teflon in the nickel would have to be gone to be shiny. It does look good and I look forward to the next firearm you would like done!
 
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