ASTM B994 Reference Guide

Understanding The Science Behind ASTM B994

ASTM B994, API 20E Compliant Coating, Nickel-Cobalt Plating

Barrier to Hydrogen Embrittlement in Fasteners

Acid Immersion Test – ASTM B994 Nickel-Cobalt plating vs Zinc coating systems

Fastener Hydrogen Embrittlement Webinar

“Wanted to provide you with some pictures of the Doxsteel fasteners we are using. They are holding up extremely well. The BOP has been deployed several times since the fasteners have been installed.”
– Subsea Specialist
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Download the Full ASTM B994 Standard

 

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Source Guide

  • Adhesion – Section 8.3
  • ASTM Standards – Section 2.1
  • Certification Test Reporting – Section 12.3
  • Classification – Section 4
  • Cleaning of Basis Metal – Section 7.4
  • Coating Thickness – Section 8.4
  • Corrosion Testing – Section 9.5

Source Guide

  • Environmental Testing – Section 9.6
  • Galling Test – Section 9.2, Appendix X1
  • Reducing Hydrogen Embrittlement Risk – Section 7.6, 7.7, 9.4
  • Substrate Requirements – Section 7.1
  • Torque – Appendix X1.1.1

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With the industry in search of better methods to protect fasteners from failure, ASTM B994 offers a novel solution to corrosion resistance in critical offshore bolting operations. Suggesting a Nickel-Cobalt alloy as the new practice for fastener electroplating, the standard is designed to improve a manufacturer’s control of the production process. ASTM B994 recommends new, more rigorous testing practices to improve worker safety and reduce the long-term costs of bolting.

ASTM B994 also helps bolting companies comply with API 20E specifications, making sure that facilities are up to the challenges of today’s bolting environment. The ASTM B994 Nickel-Cobalt alloy acts as a barrier to hydrogen, greatly reducing the risk of bolt failure caused by hydrogen embrittlement, and resists corrosion more than any other fastener coating. ASTM B994 suggests a system that allows bolts to be traced to their origins even while they’re working in the field. When coupled with the revolutionary ASTM B994 galling test, this allows facilities to anticipate when their bolting will fail so they can replace them with ease and prevent costly, dangerous procedures such as hot bolting. With all of these advances in fastener technology, ASTM B994 promises to revolutionize bolt theory and practice in the oil and gas industry.

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