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NyShield®

Galvanic Corrosion Protection

EXPANDING OPTIONS FOR FASTENING DISSIMILAR METALS

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NyShield Test results imageNYSHIELD® is effective in preventing galvanic corrosion between steel fasteners and the most extreme lightweight materials – which include both magnesium and carbon fiber. NYSHIELD® is applied very uniformly to the steel fastener surfaces that contact dissimilar materials, and shields/protects the least noble material. This product has minimal clamp load loss that is comparable to control bolt without NYSHIELD®, has exceptional chemical resistance and adheres well to most substrates.

NYSHIELD® protects steel fasteners from galvanic corrosion in high-risk material combinations:

  • Carbon Fiber
  • Magnesium
  • Aluminum
  • Chrome Plating
  • Others

NYSHIELD® 15 Year Simulation Tests

Click on the videos below to watch a timelapse of NYSHIELD® in a 15 year test on different lightweight materials.


Advantages

  • Provides exceptional galvanic corrosion resistance (steel fasteners with magnesium or carbon fiber substrates)
  • Provides general corrosion protection (15+ year vehicle life simulation)
  • Coating Uniformity: typical thickness is 50-75 microns
  • No interference with HEX or TORX drive
  • Low clamp load loss at elevated temperatures (125°C)
  • Adjustable Coefficient of Friction (typically between 0.10– 0.16)
  • Excellent adhesion
  • Exceptional chemical resistance
  • Good toughness / durability
  • US Patent Nos. 9,738,792, and 10,465,077, other patents pending.  Also protected under TWI654265, CA2,972,984, MX 374,094, and KR 10-1935043, other patents pending.

Technical Data

  • Corrosion Resistance (steel vs. carbon fiber, steel vs. magnesium) is exceptional after 15 year simulation exposure (GMW17026) (See download for results)
  • Coefficient of Friction results are adjustable (typical range 0.10 – 0.16) (See download for results)
  • Clamp Load Loss Test & Results: Comparable to control bolt without NYSHIELD® (See download for results)
  • Tape Adhesion Test: 10 days @ 40°C in 100% RH chamber, cross hatch cut in coating/tape pull: no removal of coating (Per GMW14829) (See download for results)
  • Chemical Resistance Tests: • 24 hour soak (engine oil, coolant, transmission fluid, power steering fluid, windshield washer fluid, vehicle cleaning agent, transit coating/protective wax, car shampoo, paintwork cleaning product) • 2 hour soak (E10 fuel, E85 fuel, diesel fuel, Windex, Rain-X, 2-in-1 glass cleaner, remover for transit coating, washer fluid) • 10 minute soak (tar and road oil cleaner, chrome cleaner) • Results: no visual change in coating appearance: no noticeable softening of coating (See download for results)
  • Durability: Good corrosion resistance after coated fastener is subjected to drop test

Manufacturing Specs

ManufacturerSpec
GM
GMW17796
(Per RM 2/13/18)