What are the key differences between Grade 5 titanium and Grade 23 titanium?

M

monu-singh

Member
Grade 5 titanium and Grade 23 titanium are both titanium alloys commonly based on Ti-6Al-4V, but Grade 23 is the ELI (Extra Low Interstitial) version. The main difference is their lower oxygen and iron content.

  • Grade 5 (Ti-6Al-4V): Known for high strength and excellent corrosion resistance.
  • Grade 23 (Ti-6Al-4V ELI): Contains lower levels of interstitial elements, which generally provides improved ductility and fracture toughness.
Because of these properties, Grade 23 titanium is widely used in biomedical applications, including medical implants and some 3D-printed implant manufacturing workflows. Grade 5 remains popular for applications where high mechanical strength is a key requirement.

The best choice depends on the implant design, manufacturing process, mechanical requirements, applicable standards, and intended clinical use.

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