Full transcript:
What’s up guys? This is Michael with Michael Talks Metal back for another round of Titanium! If you’re watching and wouldn’t mind helping support the channel, and you like what you see, please be sure to drop a like on the video, it’ll help youtube recognize that people value this content. Thank you!
Today we are continuing our series on Titanium with perhaps the most popular of the alloy grades. 6AL-4V and 6Al-4V ELI. As the name suggests, the nominal composition is 6 % aluminum and 4% vanadium and the balance titanium. ELI refers to an Extra Low Interstitial variant for enhanced fracture toughness characteristics.
This combination of alloying elements results in a mixed structure of both alpha and beta constituents. It can be used in either the annealed condition or in heat treated conditions to develop additional strength or fracture toughness characteristics.
General corrosion resistance is excellent and this alloy is highly resistant to sea water corrosion.
Applications include aerospace structural and engine components; chemical processing equipment; pressure vessels; medical instruments and prosthetic implants.
Is Titanium 6AL-4V magnetic? No 6AL 4V is not magnetic, it’s non-magnetic.
Density of point 160 lbs per cubic inch.
Mean coefficient of thermal expansion from 70-212°F – 5.0 micro inch per inch per degree F
Beta transus is 1800 to 1850° F
Now for some chemistry. For any of you that would rather read about this please see the link in the description to the transcript. For now, just a cursory glance at this chemistry for both 6AL-4V and ELI.
| Chemistry ASTM Grade 5 – 6AL 4V (UNS designation is R56400) | |
|---|---|
| Aluminum | 5.5 – 6.75 % |
| Vanadium | 3.5 – 4.5 % |
| Oxygen | 0.20 % Max |
| Nitrogen | 0.05 % Max |
| Carbon | 0.08 % Max |
| Iron | 0.40 % Max |
| Hydrogen | 0.015 % Max |
| Residuals, each | 0.1 % Max |
| Residuals, total | 0.4 % Max |
| Titanium | Remainder |
| Chemistry 6Al -4V ELI ASTM Grade 23 UNS R56407 | |
|---|---|
| Aluminum | 5.5 – 6.5 % |
| Vanadium | 3.5 – 4.5 % |
| Oxygen | 0.13 % Max |
| Nitrogen | 0.03 % Max |
| Carbon | 0.08 % Max |
| Iron | 0.25 % Max |
| Hydrogen | 0.0125 % Max |
| Residuals, each | 0.1 % Max |
| Residuals, total | 0.4 % Max |
| Titanium | Remainder |
Mechanical properties vary by section thickness, heat treatment, and prior thermomechanical history.
6Al-4V alloy has numerous ASTM, ASME, AMS, and MIL specifications that vary by product form. These specifications and any part requirements can alter what we have shown you here today, so as we have said many times before….
Check the specs!!!!! If you want MORE info on Titanium, please comment and we’ll dive deeper into this topic. If not, Michlin Metals is a supplier of Titanium products… and fore more info please visit us at our website www.michlinmetals.com. This is Michael with Michael Talks Metal, thanks for watching, if you made it this far, please subscribe if you haven’t yet to do so and if you missed last weeks video click here. See you next Thursday 10am, I’m out!
