Titanium VS. Aluminum

[DrasticSports]

Does anyone know the strength and weight differences between titanium and aluminum (6061 & 7075)?

Thanks

[Ken_Shea]

Aluminum .09750 lb/ci

Titanium .16300 lb/ci

Another asset of MEpro



Tensile Yield Strength
6061-T6 45,000 PSI
7075-T6 67,000 PSI

Titanium (general) 110,000 PSI

[DrasticSports]

Wow that is a major difference. Almost half the weight and twice the strength.

What supplier has the best price?

Thanks

[dertsap]

now lets talk price difference

[Geof]

Originally Posted by DrasticSports Wow that is a major difference. Almost half the weight and twice the strength.......

No, not quite that good, you read Ken's numbers backwards; Titanium is 1.67 times the weight of aluminum, 1.64 times the strength of 7075 and 2.44 times the strength of 6061.

[Zumba]

Originally Posted by dertsap now lets talk price difference

Price is negligible for Lockheed Skunkworks people.

[posix]

which basically means if 7075 is cheaper stick to aluminium (unless medical application of course)!

[posix]

no it doesn't, I forgot about the poor "cycling" strength of aluminium. if your part will have frequent back-forth forces applied to it (think piston rod, up down up down) then you don't want aluminium, it will fatigue rather quickly (which is exactly the reason why performance rods are always steel or titanium)

[lakeside]

Also they use magnesium

[lakeside]

Originally Posted by Zumba Price is negligible for Lockheed Skunkworks people.

in other words you'll just grab it like anyone in the trade

[DrasticSports]

I don't suppose you have the stats for Carbon Fiber as well?

Thanks

Originally Posted by Ken_Shea Aluminum .09750 lb/ci Titanium .16300 lb/ci Another asset of MEpro Tensile Yield Strength 6061-T6 45,000 PSI 7075-T6 67,000 PSI Titanium (general) 110,000 PSI

[Ken_Shea]

With Carbon Fiber you will need to know what kind, as it ranges from 80psi to hundreds of thousands PSI,

Here is a useful link where I find my materials specs.

http://www.matweb.com/index.asp?ckck=1