The Difference Between G23 and F136 Titanium

When you browse on the body jewelry online store or go to a offline store, you may often hear the words “G23 titanium””F136 titanium””implanted titanium material”.

You must be confused of what are these? What is the difference between them? Are they the same material?

What is Titanium?

Titanium is a chemical element with the symbol Ti and atomic number 22. Its atomic weight is 47.867 measured in daltons. It is a lustrous transition metal with a silver color, low density, and high strength. Titanium is resistant to corrosion in sea water, aqua regia, and chlorine. (From Wikipedia)

Titanium Grades

According to the components the titanium is classified into different grades.

Titanium is available in commercially pure grades and titanium alloy grades. Alloys can be alpha titanium, beta titanium, or alpha-beta titanium. Alpha and beta are the two different phases of titanium.

The commercially pure grades are grades 1 through 4. The differences are the limits of various elements allowed and the strength levels(minimum required strengths and elongations are shown .)

The next alloy, 6-4 ELI (Extra Low Interstitial) is common grade of titanium alloy.  It is primarily used in the medical implant industry and is commonly referred to as Grade 23.  

Grade 23 – Titanium 6Al-4V ELI

Chemical Analysis of Titanium Grade 23/Titanium 6Al-4V ELI

According to American Society for Testing Materials (ASTM), who make the standards for the American Society for Testing and Materials Standard, American Society of Mechanical Engineers standard, and United States Military Standard. There are lots of specifications of the Grade 23 titanium as below.

According to the below details, we know that the G23 titanium and F136 is the same material, one is named by the Chemical name, the other is the ASTM standard name.

So when you see the other two names next time, you  will know that these two are the same material but in different names.