Over 35 Years of Providing Metallurgical Analysis

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