Defective  Materials

Defects are a common type of materials failures

Let me count the number of ways materials can be “defective.” Defective means more than just missing something, it can also mean that wrong material was selected at the start of a project and used inappropriately for a given application. Envista has investigated numerous situations where a material was defective and led to a catastrophic failure. Call us today and let’s get started on determining if you have a defective material and how to correct it.

When investigating a material failure, what has to be examined to determine if a material is defective?

  • Review the initial design documents to determine what material was to be used.
  • Conduct tests on the material to determine its chemistry and mechanical properties if necessary.
  • Review the procurement specification to make sure the proper material was actually ordered.
  • Review documents shipped with the purchased material to see if the correct material was delivered. Even if it appears the right material was shipped, the material should be examine as discussed above to determine if material used was different than the shipping documents.
  • Review how the material is used in the design. Was there a better material that was more corrosion resistant?
  • Conduct macroscopic and microscopic examinations of the metal surface. Does the grain structure look correct? Does the structure appear as if it should