Electrical discharge machined (EDM) notches

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Samples are tailor made with specific defects such as transversal and longitudinal notches with very precise shape, width and depth. Notches can also be made on the inside of a tube.

Reference sample products

Samples can be made for almost all product types within our product portfolio of high performance materials such as austenitic, ferritic and duplex stainless steels as well as nickel, titanium and zirconium alloys.

  • Bar and hollow bar
  • Tube (outside and inside)
  • Strip
  • Wire

Product specification

Notches can be made in many different forms, shapes and depths. Common shapes of notches are:

  • U-shaped
  • V-shaped
  • Square shaped
  • Custom made

Manufacturing reference samples

Notches are made using Electrical Discharge Machining (EDM) that removes material. Special tools developed by Sandvik ensure extreme precision and tight tolerances even for advanced stainless steels and nickel alloys. High quality reference samples are the key to successful non-destructive testing with consistent, repeatable results.

We have for many decades made reference samples with EDM for our own quality assurance processes during the manufacture of high end stainless steel products. Our team of NDT experts is also constantly developing new testing methods and tools for specific needs.

Purchasing reference samples

  • For tailor made reference samples and help with testing processes, please contact us
  • Standard reference samples are provided in our webshop and shipped globally