Learn to evaluate material performance in HF and fluorine environments through corrosion analysis and alloy behavior insights in this self-paced technical module.
Alloy selection for service in hydrogen, fluoride, hydrofluoric acid and fluorine
Full Code
APP0416NI205
Module Type
E-learning
Description
None
What you will learn
• Understand the fundamental corrosion mechanisms governing metal performance in anhydrous HF, aqueous HF solutions, and fluorine—including protective fluoride film formation, velocity effects, hydrogen-related damage, and oxygen-induced attack.
• Explain the behavior of major alloy families (carbon steel, stainless steels, nickel alloys, copper-nickel alloys, and precious metals) and how composition, fabrication, and temperature–concentration conditions determine suitability.
• Differentiate key nickel-containing alloys and stainless steels used in HF and fluorine environments, recognizing limitations such as stress-corrosion cracking, weld-metal sensitivity, and oxygen-accelerated corrosion.
• Evaluate the effects of contaminants, moisture, flow velocity, and temperature on corrosion rates, protective film stability, and failure risks in HF and fluorine service.
• Identify appropriate materials of construction for specific HF- and fluorine-handling equipment, including piping, pumps, valves, storage vessels, vaporizers, plant utilities, and fluorine transfer systems.
• Interpret corrosion data and iso-corrosion charts provided for nickel alloys and stainless steels to establish safe operating conditions and select optimal alloys.
Module content
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