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Titanium Alloy

why are pure titanium bikes more expensive then an alloy?

wouldn't a 6/4 or 3/2.5 of alluminium to vanadium be more expensive? Surely that would take more work. Could be to do with welding or something? Or is it because those alloys are more effective and thus produced on a larger scale? This is for a chemistry assignment as well as for general knowledge..

As an owner of both Ti & aluminum bikes, let me throw in personal experience:

Steel is one of the best materials for bikes. They're super strong, yet flex enough to make for a very comfortable ride. I've never met anyone who didn't like their steel frame if it was a quality bike. The main problem with steel is weight and rust.

To solve these problems aluminum was used. It's lighter and doesn't rust but it's super stiff which can make long rides with no suspension can become very uncomfortable and fatiguing. To fix that, suspension was added pretty much negating the weight savings but making the ride smoother. The advantage of this suspension was more control of rough terrain but a loss of power on smooth.

Carbon fiber is lighter and has a bit more of the flex of steel. My reason for not buying it was it's tendency to fail violently after a crash. A small, almost invisible crack can spell disaster. Metal will show a dent and rarely fail so suddenly.

Titanium is light, won't rust, flexes very much like steel, and lasts longer than carbon fiber. It can take repeated impacts/crashes without failing so I feel safer riding it in all conditions.

I ride all year long. I've had to replace many components on my Moots Ti hard tail, yet the frame still looks new after over 5 years of hard riding.

As to the cost: Ti is much more rare, it's difficult to process and needs to be heat rolled where steel and aluminum are cold rolled. Personally, I think it is worth the cost (at least for the frame, not the drive train).

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Kevin Is Made Of Titanium Alloy

What Titanium alloy do i use?

I need to make this project for science, i need titanium that i don't melt, i want titanium alloy where i hammer it into place? what kind of titanium alloy sheets do i need?

I worked in the titanium industry; the titanium you need if you are going to "hammer it into place" is Commercially Pure (CP) titanium.

Almost all the alloyed titanium's are alloyed to make them stronger.
6Al4V titanium is very resistant to cold hammering - it gets soft above 1600°F. I'd say stick with pure titanium.

The two places titanium is outstanding is in corrosion resistance and at elevated temperatures between 500°F and 1000°F (jet engine compressors). Otherwise, typically people choose a less expensive material. Titanium isn't that expensive (approx. twice the price of stainless steel). Thinner sheets are more expensive than thicker sheets. Below about 0.060 inch thickness, titanium is "chem-milled" to make the sheet thinner. This makes the cost of the sheet even more expensive.

If you want to purchase some "remnants", contact some of the titanium suppliers around the country, and ask them if they have some scrap leftovers they would sell you. Titanium is mostly manufactured in Oregon and Ohio, and their customers are typically aerospace and marine.

Besides being cool - do you really need titanium? Wouldn't stainless work?

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