Titanium

I'm trying to source some armour material for the re-design of my flipper arm from the current 1mm thick Gr5 titanium plate to something thicker.
I've found a piece of Gr5 Ti 400mm by 300mm by 3.5mm thick for £50, does any one know if this is a fair pricel? Have to consider also shipping costs, which I'd estimate around another £20.


Don't know what else I could use - hardox seems impossible to find in small quantities and its quite heavy, other options I was looking at is ground flat stock but its similar in weight to hardox.

£50 is a reasonable price for that piece.

Have a look here. Don't faint please

It is a really good price, even Titanium Joe in the US isn't that cheap.

Ok I'll get my piece first, then I tell you where I got it from :wink:

Titanium plate arrived...this is where i got it from
http://www.ebay.co.uk/itm/281064715648? ... 1423.l2649

Lol no surprises there. Ebay is the standard place to go for cheap titanium. How much was shipping?

£13 shipping, Have yet to find a piece of grade 5 titanium of significant thickness and size at a reasonable price off e-bay!

You just did. Titanium ain't cheap. Look into how it's manufactured and you'll understand why. Same with alluminium compared to steel.

Yes you're right, I sure did! The thing I don't get abut Ti is its scrap value - on the island you'd get nothing for it, unlike steel, aluminium, brass or copper. Is it the same over there?

Same over here.
But that's more because titanium scrap/swarf is so rare, there ain't a reasonable recycling circuit for it.

Hijack...

Would swapping Annealed 2mm Grade 2 Titanium for 1.2mm TA10/Ti64 work as top armour? It apparently has poor shear strength and surface wear properties but has higher Ultimate/Yield tensile strength by about 250%.

Data from here...

TA10: http://asm.matweb.com/search/Specifi...bassnum=MTP641

Ti2: http://www.titaniumdistributor.com/t...-annealed.html

I'd go with the 1.2mm grade5 Ti
Grade2 is just pure Ti, with similar tensile strength to mild steel, where as grade5 Ti is nearer to hardox or similar steel.
I got 1.2mm gr5 Ti on mine, for normal combat its more than enough, but it also depends on the angle you place your armour at

I will go with the Grade 5 then. Unfortunately its flat on the top of the machine. I am trying to keep the same style as in Conkers 1 & 2 with the flat edges and sloped core section. The sides are 10mm 7075 and 2mm Ti 2 so no probs there, its just the top I worry about with the new axes coming in. Could also do with a 2mm Grade 6 plate for the base as atm it 2mm grade 2 but thats for later.

i would love to get some titanium for that price thinking about building a feather weight :)

Well you could always check on that seller, she had more sheets in various thickness, sizes and grades. Try to keep the weight below 2 kg as otherwise the shipping will more than double!

One thing I get curious about is how you guys use hardox on featherweights and manage to stay within the weight limit...I'm finding it really hard to do so!!

Just wanted to know which is stronger grade 5 titanium or grade 1

Grade 1 is pure Titanium, Grade 5 is an alloy and includes Aluminum and Vanadium I believe.
For armour people tend towards Gr5 since it has the highest elasticity value.

Grade5 is tougher but brittle, grade1 is more ductile but lacks the toughness of grade5. Grades 1 to 2 can be bent to shape relatively easily. Bending grade5 is not easy and requires some serious heat and press tooling.

Trev

With a proper bending machine, you'll be able to bend Gr5 Ti, but you'll have to bend a bit further as it will spring back, also tight angles are difficult to produce as it will most probably snap at sheet thickness above 2mm.
Anything below Gr5 Ti is pure titanium - and in my opinion not good for armour - the only advantage I can think of being its lighter weight and hardness. Compared to steel or aluminium, strength wise its similar to mild steel or aluminium 2024T3. Aluminium 7075T6 is even stronger.

Grade 5 will often just snap when bent if not heated as Trev said.

True - depends on what thickness and what angle you bend.
I've bent 1.5mm without any problems at all, no heating used. A proper bending machine is a must though as well as good edge preparation of the sheet to be folded.
For intricate shapes I'd prefer to cut to size and then weld or bolt together.