David N. French

Since 1984, David N. French Metallurgists has served as a consulting firm providing metallurgical analysis, expert testimony and educational seminars, specializing in the power industry.

Case Studies

David N. French analyzes various types of samples annually. The following case studies provide a brief summary of actual results along with images detailing the sample analyzed.

Should you have an interest in a particular case study or would like more information on services we provide, please contact us and we will be happy to answer any questions.

Check back from time to time as new studies are posted!

	White Rust Corrosion of a Condenser Tube

	Hydrogen Embrittlement/Chain Link

	Chain Graphitization/Superheater Tube


	Poor Welding Failure/Water Pipe

	Acid Condensation/Heater Basket

	Bending Fatigue/Pulverizer Shaft

	Improper Material/Tube Replacement

	Material Defect/Furnace Wall Tube

	Explosive Cleaning Damage/Tube

	Stress Corrosion Cracking/SS Pipe

	Thermal Fatigue/Sootblower Nozzle

	Microbiologically-Induced Corrosion/SS Pipe

	Sootblower Erosion/Boiler Tube
	High-cycle Fatigue Failure of Fan Blade
	Microbiological Induced Corrosion of Copper Heat Exchanger Tubes
	Under Deposit Corrosion of Pipe Nipple

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