Technical Information on Corrosion Protection

Contents

This technical overview contains information on:

• The galvanic process: fasteners with electroplated coatings, including zinc plating, passivation, and chromating
• Guiding values of the corrosion resistance for commonly used zinc and zinc alloy coating systems according to ISO 4042:2018
• Reduction of the risk of hydrogen embrittlement (ISO 4042)
• Maximum coating thickness for ISO metric threads
• Further galvanic coating processes: nickel plating, chromium plating, brass plating, copper plating, silver plating, tin plating, anodizing, zinc/iron alloy coating and zinc/nickel alloy coating
• Further surface treatments: hot-dip galvanizing, zinc flake coating, mechanical plating, black oxidizing of stainless steel, phosphating, waterproofing, baking, sealing, tribological dry coating, waxing, WIROX®, YELLOX®, and GreenTec®