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03227 EVALUATING THE PHYSICAL PROPERTIES OF A CADMIUM REPLACEMENT COATING

Picture for 03227 EVALUATING THE PHYSICAL PROPERTIES
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Product Number: 51300-03227-SG
ISBN: 03227 2003 CP
Author: David A. Shifter, Regis K. Conrad, Harry L. Archer, Jr.
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Cadmium plating has been used to protect steel by sacrificial galvanic action, particularly in conjunction with steel components in marine environments. Cadmium has been used because of its hardness, close dimensional tolerance, and its ability to restrict hydrogen permeation into or out of steels. However, cadmium is highly toxic to the environment and is severely detrimental to occupational safety, thereby necessitating the search for alternative corrosion control coating systems. Alternative plating/coatings to replace cadmium plating have been developed and evaluated for some period of time. In this paper, the mechanical properties of zinc-nickel plated 4130 steel panels are evaluated and compared to cadmium plated 4130 steel panels. The presence of hydrogen embrittlement on zinc-nickel plated 4340 steel test strips was compared to cadmium-plated 4340 steel test strips. Keywords: cadmium plating, zinc nickel plating, corrosion, hydrogen embrittlement, gravelometer testing
Cadmium plating has been used to protect steel by sacrificial galvanic action, particularly in conjunction with steel components in marine environments. Cadmium has been used because of its hardness, close dimensional tolerance, and its ability to restrict hydrogen permeation into or out of steels. However, cadmium is highly toxic to the environment and is severely detrimental to occupational safety, thereby necessitating the search for alternative corrosion control coating systems. Alternative plating/coatings to replace cadmium plating have been developed and evaluated for some period of time. In this paper, the mechanical properties of zinc-nickel plated 4130 steel panels are evaluated and compared to cadmium plated 4130 steel panels. The presence of hydrogen embrittlement on zinc-nickel plated 4340 steel test strips was compared to cadmium-plated 4340 steel test strips. Keywords: cadmium plating, zinc nickel plating, corrosion, hydrogen embrittlement, gravelometer testing
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97548 A COMPARISON OF CADMIUM ELECTROPLATE AND SOME ALTERNATIVES

Product Number: 51300-97548-SG
ISBN: 97548 1997 CP
Author: Moses Wossene, Roy E. Booth, David L. Hunn, Larry N. McGlaun, John H. Miranda, Steven Twaddle
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03248 ENVIRONMENTAL EVALUATION OF A CADMIUM REPLACEMENT COATING FOR USE IN A MARINE ENVIRONMENT

Product Number: 51300-03248-SG
ISBN: 03248 2003 CP
Author: David A. Shifler, Regis K. Conrad, Andrew D. Sheetz, Harry L. Archer, Jr.
Publication Date: 2003
$20.00

Because of its hardness, dimensional tolerance and resistance to hydrogen, cadmium plating has been used to protect steel components in marine environments.  However, Cadmium is thought to be toxic and a search is on for an alternative. In this paper,  cadmium and zinc-nickel plating/coating were compared in water immersion, temperature cycling, rain, humidity, and salt fog testing.
Picture for 02137 Phosphate Coated Zinc Plating-...
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02137 Phosphate Coated Zinc Plating- An Alternative To Cadmium Plating on Fasteners

Product Number: 51300-02137-SG
ISBN: 02137 2002 CP
Author: Joseph Menke
Publication Date: 2002
$20.00

Alternatives to cadmium plating on fasteners have been evaluated for a number of years. Torque-tension and corrosion resistance characteristics have been the major concerns. Zinc plating has been a popular substitute, but torque-tension at proper preloads on Grade 8 fasteners requires more torque.  Torque-tension tests were ALSO evaluated on Grade 5 fasteners - same coatings.
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