Moly or Tungsten Disulphide Coatings? (Danzac)?

[molonlabe1984]

I'm looking for info regarding DIY moly coatings on bullets. I've read that moly can eventually weaken barrels and fouls them easier, and a common(?) alternative is danzac, which is a tungsten disulphide coating.

I cannot, however, find anything on google regarding brand name "danzac" or any info on what tungsten disulphide is or how it is applied.

I've read that moly coatings can be applied in the tumbler, true?

not looking to start a moly vs. ??? debate, just want some info on them. Anyone?

 

[delta53]

molly

I use molly, And put one table spoon in a tumbler and a couple hand fulls of bullets and let it go about a hour or two strain off the extra then put them in a clean rag to wipe of the remaining dust. You will have to use surgical gloves when comming in contact with the bullets or you will stain your hands no matter how much you wipe down the bullets. I do all my bullets with molly.
Just clean your new bullets when you first get them because they have a lite amount of oil on them. you want them dry and clean before going in the molly. if you going to do it alot buy another tumbler just for the molly so you don't have to keep cleaning it. Use no more than a small amount of molly and make sure they are clean and dry expecially hollow points if you don't the hollow area will become caked up with molly/jim

 

[45ACPUSER]

Skip it! A fad that has faded....

 

[alsaqr]

Loaned a .30-06 to a friend for deer and elk season. The guy shot several boxes of moly coated ammo through that gun. Got the gun back and it would not group with my very accurate handloads. It took me five cleaning sessions to get the moly out of the bore. No more loaners.

 

[everallm]

It appears that tungsten disulphide is used as a permanent friction reducing coating in high temp/high pressure metal parts in, amongst others, engine components, gears, bearings etc.

Coatings are at the 0.5 to 1.0 micron thickness level, wonder if it can be applied after market to barrels?

Here's a PDF link to a provider on the properties of the material

http://www.rosemill.com/html/msds/Bemol_DryFilm_info.pdf

Bemol #115 & #215 Bonded Dry-Film Suspensions
®
features and uses
Bemol® Dry-Film Features
Lubricates without attracting and holding particles in dusty or dirty environments
Lubricates without oily or greasy residue “spin-off”
Effectively lubricates after long, inactive periods
Effectively lubricates on parts with high initial wear
Effectively lubricates over a wide range of temperatures (-350oF to as high as +950oF)
Increases life of parts that will be inaccessible after assembly
Decreases squeaks and friction due to vibration or expansion/contraction
Aids assembly of close tolerance parts
Aids pressing, fitting, and stamping operations
Air dries in minutes at ambient temperatures allowing for shop or field use
Can be easily modified by user with common ingredients
More environmentally responsible ingredients
Basic Composition
Molybdenum disulfide or tungsten disulfide particles in a water-based suspension
Contains common organic solvents
Contains latex-like adhesion promoter
Bemol® Bonded Dry-Film Suspensions
Bemol® bonded dry-film lubricants are easy to use, easy to modify to your exact
application, and produce excellent lubrication properties in a wide range of environments. These
products dry in minutes at ambient temperatures and require no additional heat, chemical, or
Ultra-violet (UV) curing. Bemol suspensions leave a black/gray paint-like lubricating film on metal
and other similar surfaces.
Bemol #115 suspension contains 15% molybdenum disulfide (wet content) and
effectively lubricates from –350oF to +750oF. Bemol #215 suspension contains 15% tungsten
disulfide (wet content) and effectively lubricates from –350oF to +950oF. The actual cured
lubricating film contains approximately 82% lubricating solids, of which the particles are less than
1.5 microns.
Modification
Bemol #115 and #215 dry-films are formulated to be easy to modify because they contain
common and more environmentally responsible ingredients such as water and isopropyl (rubbing)
alcohol (IPA). Users can modify these lubricants with water to slow the drying process and/or thin
the coating. Adding additional alcohol will also thin the coating but will speed the drying time. De-
mineralized/purified water and IPA 91% (or IPA 70%) are recommended. Users must determine
the proper amount of modification (if any) to achieve their desired results.
Application
Parts to be coated should be clean and free of dust or loose particles. Mechanical
cleaning (such as wire brushing) as well as solvent cleaning (such as IPA), will promote better
adhesion. Maximum adhesion will occur on metal surfaces that have been abrasive-blasted to a
random orientation 20 to 30rms surface finish. Chrome and non-porous surfaces may not provide
a suitable base for adhesion.
Bemol suspensions may be applied by spraying, brushing, and dipping. Many customers
use high-quality plastic pump spray bottles (for small-medium volumes) as well as commercial
one-quart spray guns. Keep suspension properly agitated during application. Cleaning can be
done with naphtha and/or IPA.
Be sure to have proper ventilation and personal protection when working with any
coatings or solvents, and always test a small portion of your part to ensure compatibility.
Case Studies
#1) An Asian manufacturer of industrial printing and marking machinery reports a wear
part coated with Bemol #115 suspension results in dramatically increased part life. The small
stamped sheet metal part is a retaining clip that holds a wire buss in place as the print head
moves from side-to-side at a rapid speed. The uncoated part had a life span of approximately 1
million cycles, while the coated parts exceeded 2.1 million cycles. The parts were coated prior to
assembly. The coating was sufficiently bonded to the part to survive the handling and
manufacturing processes. The dry-film did not attract or collect paper residue, dust or dirt.
#2) A European automobile manufacturer uses aluminum alloy wheels that fit tightly over
the steel wheel hubs. Tight tolerances, galvanic corrosion, and salt and sand particles combine to
seize the wheels onto the vehicle. Some wheels could take several minutes to remove, often
requiring pounding with rubber mallets. Factory trained mechanics coated the wheel and hub
mating surfaces with Bemol #115 suspension. Unlike grease or oil, the dry film does not spin-off
onto the brake pads or rotors. The treated wheels were easily removed, even after several
months of use.
Availability
Bemol #115 and #215 suspensions are available from stock in one-gallon epoxy-lined
metal paint cans. Custom packaging is available. Ordering can be done online at
www.RoseMill.com or by calling 860-289-4098.
Bemol lubricants are manufactured in the USA at the ISO9001:2000 certified facility of
Rose Mill Company. Bemol lubricants are formulated for extreme environments and special
applications. Greases, powders, and aerosol sprays are also available.
Rose Mill Co.
122 Park Avenue
East Hartford, CT 06108
USA
[email protected]
www.RoseMill.com
860-289-4098 ph
860-289-2098 fx

 

[NCsmitty]

Skip it! A fad that has faded....

IMO, 45ACPUSER has it right. Too much controversy with the moly type bullets. I do it like I have for the last 4+ decades, regular bullets and proper bore cleaning as needed. I'm for technological advances as much as anyone, but when questions arise on those supposed advances, one needs to step back and reevaluate.

NCsmitty

 

[Afy]

Boron

 

[rogn]

WS2

The tungsten disulphide seems to provide all the benefits of Moly with almost non of the problems often sen with moly. Moly is often very tenacious and can build up a very stubborn deposit in the throat. Tungsten doesnt do this, and also does not get all over everything in the whole house. The whole idea of the coating is to minimze bore fouling and promote minimal bore cleaning-remember morebarrels ARE ruined with cleaning rods than any other way. ive run up to 60 rounds thru a barrel and cleaning is completed with only a few patches wet with kroil. Outside of the tumbler coating with tungsten life is simpler. I got a pound of tungsten disulphide from a Canadian firm for $40, this for a sample. Itll probably last me the 50 years, less if the Dems get in, Theyll want it too. From me a + for WS2, Moly is more trouble in my experience. If you want easier cleaning, less fouling and longer shooting sessions then is good, but Ive got a few barrels that are doing fine with no coatings whatever.