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 Superior Corrosion Resistance
The ZSi-Foster Silva-Guard finish provides one of the highest levels of corrosion resistance for spring steel fasteners available on the market. ZSi-Foster Silva-Guard coating is extremely consistent providing a finish that combines superior appearance and outstanding protection.
This aesthetically pleasing appearance is particularly important for installations in highly visible areas, such as open ceilings.
Innovative Three Step Coating System
SG Finish is applications.
Spring Steel: Carbon Steel:
Listed for indoor, outdoor, wet, and dry
Spring Steel Specifications ASTM Description
Cold Roll, ASTM A684 Grade 1055 Spring Steel
ASTM A1011-00 SS GR 33 or ASTM A1011-00CS Type B
The ZSi-Foster Silva-Guard finish is a three step coating system that is RoHS, WEEE, and ELV compliant.
• The first step is surface preparation involving a process designed to improve the coating adhesion.
• The second step is a base coat designed to self-heal from nicks and scratches as well as sacrifice itself instead of the fastener base material.
• The third step is a topcoat designed to be an additional protective barrier.
Spring Steel
Electrical Positioning and Support Products
The ZSi-Foster Silva-Guard Finish
Call ZSi-Foster at (800) 323-7053 or order now at
ZSi-Foster Silva-Guard
Electroplated Zinc or Electro- Galvanized
Pre-galvanized Zinc
Spring Steel Finish Specifications
Finish Description Code
ZSi-Foster Silva-Guard coating is a multi-step process that meets the 1000 hour salt spray test per ASTM B117 and DIN 50021.Silva-Guard
SG coating is WEEE, ELV and RoHS compliant. SG Finish is approved for outdoor as well as indoor applications. It is a chrome free duplex coating system that combines an inorganic zinc-rich basecoat with an aluminum-rich organic topcoat.
This coating is standard for most ZSi-Foster
products. Electro-Galvanized products meet ASTM EG B633 SC1 or SC3, Type III. Electroplating deposits
zinc on the surface of the steel by electrolysis from a bath of zinc salts.
ASTM A653 G-90 Pre-galvanized zinc is produced PG by continuously rolling steel coils or sheets
through molten zinc at the mills.

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