Bartlett Products - your total fastener supplier


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BARTLETT PRODUCTS, LLC
5130-32 PENN AVENUE * PITTSBURGH, PA 15224-1616
PHONE: (412) 441-3000 FAX:(412) 441-3010

sales@bartlettproducts.com


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Plating Chart

Plating, CoatingUsed OnDegree of Corrosion
or Finish Resistance
Characteristics
Rust inhibitorsAll metalsVaries with type Oils, greases etc. Vary in color and film thick-ness. Usually applied to black oxide finishes. Used to protect parts in transit & temp. storage.
Zinc, electroplatedAll metalsVery goodBlue to blue-white gray color.
Cadmium, electroplatedMost metals Excellent Bright silver-gray, dull gray or black finish.Particularly effective corrosion protection in marine applications. Used for decorative purposes. High lubricity.
Clear chromate finishZinc & cadmiumVery good to excellentClear bright or iridescent chemical conversion plated parts coating applied to plated parts to enhance corrosion protection, coloring & paint bonding.
DichromateZinc & cadmiumVery good to excellentYellow, brown, green or iridescent colored plated parts coating. Same as clear chromate.
Color chromate finishZinc & cadmiumVery good to excellentOlive drab, blue, gold, bronze, etc. Same as plated parts clear chromate.
Zinc or ManganeseSteelGood Black in color. Added protection when oiled Phosphate with a non-drying petroleum oil containing corrosion inhibitors. Good lubricity.
Color phosphate coatingsSteelSuperior to regularChemically produced color coating. Available phosphate & oiled surfaces in blue, green, red, purple, etc.
Hot-dip zincAll metalsVery goodGives maximum corrosion protection. Dull grayish color. Necessitates thread size adjustments to permit assemblability.
Mechanically depositedSteelVery goodDull gray, smooth finish. Corrosion protection zinc depends on coating thickness. Good coverage in recesses & thread roots.
Tin, electroplatedAll metalsExcellentSilver-gray color. Excellent corrosion protection for parts in contact with food.
Silver, electroplated.All metalsExcellentDecorative, expensive, excellent electrical conductor.
Chromium, electroplatedMost metalsGoodBright blue-white, lustrous finish. Has relatively hard surface. Used for decorative purposes or to add wear resistance.
Copper, electroplatedMost metalsFairUsed for nickel & chromium plate undercoat. Can be blackened & relieved to obtain antique,statuari & venetian finishes.
Brass, electroplated,Steel, usuallyFairBrass electroplated which is then lacquered. Recommended for indoor decorative use.
Bronze, electroplated,Steel, usuallyFairHas color similar to 80% copper, 20% zinc alloy. Electroplated & then lacquered. Recommended only for indoor decorative use.
Bright nickelMost metalsIndoor excellent. OutdoorElectroplated silver-colored finish good if thickness at least 0.0005 inchesUsed for appliances, hardware, etc.
Dull nickelMost metalsSame as bright nickelWhitish cast. Can be obtained by mechanical surface finishing or a special plating bath.
AnodizingAluminumExcellent Acid electrolytic treatment. Frosty-etched appearance. Hard oxide surface gives excellent protection.
PassivatingStainless SteelExcellentChemical treatment. Removes iron particles and produces a passive surface.

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