Tag Archives: Hydrogen-assisted stress corrosion cracking

Corrosion Resistant Construction Fasteners from Elco

Featuring High-Performance Stalgard® Corrosion Resistant Coatings

To meet the needs of the wide range of concrete & masonry applications in corrosive environments, Elco Construction Products has developed Stalgard®, a specialized corrosion resistant coating. Specifically designed for critical fastening applications in concrete & masonry in exposed environments, don’t take any chances, choose Elco fasteners with Stalgard® corrosion resistant coating.

What is Stalgard® CoatingStalgardScrewCircleRoHSLogo

Stalgard® corrosion resistant coatings are durable, multi-layer, coatings that are engineered to provide optimal performance in the most demanding construction applications. These environmentally friendly finishes are free from chromates & silicates and any process, like electroplating, that might induce hydrogen embrittlement & structural failures.

  • Maximizes fastener performance
  • Salt spray corrosion resistance at 1000+ hours with no red rust per ASTM B117
  • Uniform thickness
  • Low coefficient of friction – eliminates the need for post-coating lubricants to ease installation
  • Does not use processes that introduce hydrogen – will not cause brittle failures like those caused by electroplating
  • Durable tough finish – doesn’t come off during handling or repeated installations
  • Eliminates the plating process, resulting in a more environmentally friendly product than those with plated zinc or other finishes
  • RoHS Compliant – chrome-free
  • Clean and dry – no oily residue
  • Maintains drilling and tapping performance
  • Blue, grey, and white Stalgard are ACQ-compatible

What are the Different Types of Stalgard® Corrosion Resistant Coatings

Stalgard®StalgardLogos

  • For Induction Heat-Treated Fasteners
  • Proven, outstanding corrosion resistance for most construction applications, including metal and wood
  • Salt spray resistance: 1000 hours per ASTM B117, 1600 hours over 410 stainless steel
  • Available colors: silver, black, blue, white, yellow, red, gray and brown
  • Pantone gray available for ACQ-treated lumber
  • Maintains drilling and tapping performance

Stalgard® GB

  • Galvanic Barrier Coating
  • Standard on all Elco stainless steel fasteners
  • Prevents a galvanic reaction between the stainless steel and dissimilar application materials, which could lead to fastener and/or joint failure
  • Salt spray corrosion resistance: 1000 hours per ASTM B117
  • Available color: Silver
  • Maintains drilling and tapping performance

Stalgard® SUB

  • Ultimate Barrier Coating
  • For more severely-corrosive environments
  • Salt spray 2,000 hours per ASTM B117
  • Available color: Silver
  • Maintains drilling and tapping performance

Construction Fasteners Featuring Stalgard® Corrosion Resistant Coatings at Tanner

For Metal ApplicationsStalgardScrews

For Aluminum Applications

For Concrete Applications

Making the Right Connections: Avoiding Metal Fastener Failures

In life, success often depends on paying attention to details and making the right connections. When fastening metals together, it is no different. The wrong connection can cause significant failure. In common construction applications fasteners can spontaneously fail for no apparent reason. These failures may occur shortly after installation or even months or years later leaving the contractor, building owner and other responsible parties puzzled over the cause of failure and cost of remedy.

The following presentation by Gregg Melvin with Elco Construction Products identifies the risks and offers solutions so that the right fasteners are used on your  job.

Making the Right Connections: Avoiding Metal Fastener Failures (PDF)