21 NACE INTERNATIONAL: VOL. 56, NO. 11 MATERIALS PERFORMANCE NOVEMBER 2017
Information on corrosion control and prevention
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coated bolts in a 5% sodium chloride
(NaCl) solution vs. 29.7572 µm/y for bare
steel. In environmental tests using ASTM
B117,
8
the Ni-Co alloy reached 3,000 h with
no significant presence (<1%) of red rust.
Source: Doxsteel Fasteners, www.doxsteel.com.
Contact Omar Rosas, Doxsteel Fasteners—email:
omar.rosas@doxsteel.com.
References
1 "Bolt and Connector Failures," Bureau of
Safety and Environmental Enforcement,
https://www.bsee.gov/what-we-do/offshore-
regulator y-programs/emerging-technolo-
gies/bolt-and-connector-failures (October 6,
2017).
2 "Layers of Protection," Doxsteel Fasteners,
h tt p : / / w w w. d o x s t e e l . c o m / w p - c o n t e n t /
uploads/2017/08/DSF_BSEEPresentation_
082617.pdf (October 6, 2017).
3 "Doxsteel Coating—Hydrogen Embrittle-
m ent," D ox st e el Fast en ers, http://www.
doxsteel.com/doxsteel-coating/ (October 6,
2017).
4 "Method Increases Tensile Strength for Elec-
trodeposited Nickel-Cobalt Alloy," NASA
Technolog y Opportunity, Case No. MFS-
32777-1, https://quicklaunch.ndc.nasa.gov/
file/resource/MSFC-QL-0046/Mini%20List-
ing%20MFS-32777-1.docx (October 8, 2017).
5 ASTM B994/B994M-15, "Standard Specifica-
tion for Nickel-Cobalt Alloy Coating" (West
Conshohocken, PA: ASTM, 2015).
6 ASTM F519-17, "Standard Test Method for
Mechanical Hydrogen Embrittlement Evalu-
ation of Plating/Coating Processes and Ser-
vice Environments" (West Conshohocken,
PA: ASTM, 2017).
7 ASTM G59-97 (2014), "Standard Test Method
for Conducting Potentiodynamic Polariza-
tion Resistance Measurements" (West Con-
shohocken, PA: ASTM, 2014).
8 ASTM B117-16, "Standard Practice for Oper-
ating Salt Spray (Fog) Apparatus" (West Con-
shohocken, PA: ASTM, 2016).
—K.R. Larsen
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