Romix
Hazard to Others (Literally)
Posts: 483
Registered: 19-6-2015
Member Is Offline
Mood: No Mood
|
|
Scandium in Kona's bike frames.
How to tell chemically if the frame contains Scandium or not?
A lot of modern Kona bike's frames containing 0.1% to 0.45% by weight.
Price of Scandium is more then 37k$ per KG.
I can recognize a Titanium bike, frames made of Titanium are very thin.
But Scandium containing Aluminum frames looks the same as Aluminum frames with out Scandium. There's no difference between them.
Ok if you not sure about Titanium frame, you can sand off a bit of paint of the frame and drop few drops of NaOH or KOH solution on it.
Titanium not reacting with bases like Aluminum do.
|
|
|
Romix
Hazard to Others (Literally)
Posts: 483
Registered: 19-6-2015
Member Is Offline
Mood: No Mood
|
|
Titanium bikes:
[Edited on 28-8-2023 by Romix]
 
|
|
|
Romix
Hazard to Others (Literally)
Posts: 483
Registered: 19-6-2015
Member Is Offline
Mood: No Mood
|
|
These two are Scandium containing!!
[Edited on 28-8-2023 by Romix]
 
|
|
|
Texium
Administrator
Posts: 4580
Registered: 11-1-2014
Location: Salt Lake City
Member Is Offline
Mood: PhD candidate!
|
|
The amount of scandium in a bike frame is going to be worth far less than the value of the bike itself… not even considering the amount of time,
effort, and resources it would take to isolate the scandium.
Also I quickly found an eBay listing for scandium metal at a third of the price you quoted, and that’s for a single gram portion. Inevitably, the
price would be even lower for bulk quantities: https://www.ebay.com/itm/394095765779?chn=ps
[Edited on 8-28-2023 by Texium]
|
|
|
B(a)P
International Hazard
Posts: 1139
Registered: 29-9-2019
Member Is Offline
Mood: Festive
|
|
Quote: Originally posted by Texium  | The amount of scandium in a bike frame is going to be worth far less than the value of the bike itself… not even considering the amount of time,
effort, and resources it would take to isolate the scandium.
Also I quickly found an eBay listing for scandium metal at a third of the price you quoted, and that’s for a single gram portion. Inevitably, the
price would be even lower for bulk quantities: https://www.ebay.com/itm/394095765779?chn=ps
[Edited on 8-28-2023 by Texium] |
That is actually about 300 times more expensive. OP was talking in kg. Regardless there is no way you could extract the scandium for that price. Not
sure of the point of the thread though. A frame might weigh 5 kg, so you are talking 20 g at best of scandium in a bike. Or are you saying that a
scandium containing frame has differing qualities and you want to know if a bike you are purchasing contains scandium? Lithium has also been used in
an alloy with aluminium in an effort to make the alloy stronger and allow less material to be used. Just get a carbon bike.
Edit - My mistake, I missed the 'k' in the original post until I saw the post from violet sin. Agreed with what you said Texium.
[Edited on 29-8-2023 by B(a)P]
|
|
|
Romix
Hazard to Others (Literally)
Posts: 483
Registered: 19-6-2015
Member Is Offline
Mood: No Mood
|
|
| Quote: Originally posted by Texium | The amount of scandium in a bike frame is going to be worth far less than the value of the bike itself… not even considering the amount of time,
effort, and resources it would take to isolate the scandium.
Also I quickly found an eBay listing for scandium metal at a third of the price you quoted, and that’s for a single gram portion. Inevitably, the
price would be even lower for bulk quantities: https://www.ebay.com/itm/394095765779?chn=ps
[Edited on 8-28-2023 by Texium] |
I don't know Scandium's price, never dealt with it.
Asked Google, it answered Scandium costs 37k$ per KG.
|
|
|
Romix
Hazard to Others (Literally)
Posts: 483
Registered: 19-6-2015
Member Is Offline
Mood: No Mood
|
|
| Quote: Originally posted by B(a)P | | Quote: Originally posted by Texium | The amount of scandium in a bike frame is going to be worth far less than the value of the bike itself… not even considering the amount of time,
effort, and resources it would take to isolate the scandium.
Also I quickly found an eBay listing for scandium metal at a third of the price you quoted, and that’s for a single gram portion. Inevitably, the
price would be even lower for bulk quantities: https://www.ebay.com/itm/394095765779?chn=ps
[Edited on 8-28-2023 by Texium] |
That is actually about 300 times more expensive. OP was talking in kg. Regardless there is no way you could extract the scandium for that price. Not
sure of the point of the thread though. A frame might weigh 5 kg, so you are talking 20 g at best of scandium in a bike. Or are you saying that a
scandium containing frame has differing qualities and you want to know if a bike you are purchasing contains scandium? Lithium has also been used in
an alloy with aluminium in an effort to make the alloy stronger and allow less material to be used. Just get a carbon bike. |
Hello Dear,
Yes, I want to know if a bike I've purchased contains Scandium in the frame as advertised.
Lithium??? And it's not washing out of the frame under rain???
|
|
|
B(a)P
International Hazard
Posts: 1139
Registered: 29-9-2019
Member Is Offline
Mood: Festive
|
|
| Quote: Originally posted by Romix |
Hello Dear,
Yes, I want to know if a bike I've purchased contains Scandium in the frame as advertised.
Lithium??? And it's not washing out of the frame under rain??? |
Metals behave differently once they are alloyed. Magnesium will readily corrode when exposed to the elements, but is an important part of most
aluminium alloys.
There are so many different aluminium alloys, you are going to have a very hard time telling them apart. The only non-destructive way I could think of
would be with the use of an XRF, though most hobbiests will not have access to this sort of equipment.
|
|
|
averageaussie
Hazard to Self
Posts: 87
Registered: 30-4-2023
Location: Right behind you
Member Is Offline
Mood: school 
|
|
don't know where you are getting your metals from romix, but scandium is very expensive.
6.5x silvers cost, over 50 times the cost of uranium, 26th most expensive element per kilo.
there is a reason that the bikes have at most 0.45% scandium by weight.
so the price of 37/kg is very very low, and likely comes from a sketchy supplier.
|
|
|
violet sin
International Hazard
Posts: 1480
Registered: 2-9-2012
Location: Daydreaming of uraninite...
Member Is Offline
Mood: Good
|
|
@averageaussie- I believe Romix has it listed as 37k$/kg => 37,000$/kg that doesn't sound cheap. Unless I misread that in OP
I was unaware that the material was SOoo expensive, wow. A good seller off bonanza has for 14$/g thanks for reminding me, he had another element I
wanted also in my cart. Picked up the a gram of scandium and 10g of praseodymium for less than 23$ shipped.
|
|
|
Texium
Administrator
Posts: 4580
Registered: 11-1-2014
Location: Salt Lake City
Member Is Offline
Mood: PhD candidate!
|
|
Sheesh, apparently the Aussies can’t read today 
|
|
|
B(a)P
International Hazard
Posts: 1139
Registered: 29-9-2019
Member Is Offline
Mood: Festive
|
|
Yesterday was national take your pet kangaroo to work day. We were all a bit preoccupied. 
|
|
|
DraconicAcid
International Hazard
Posts: 4332
Registered: 1-2-2013
Location: The tiniest college campus ever....
Member Is Online
Mood: Semi-victorious.
|
|
It's easy to miss that little k, especially if you're watching over a roo.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
|
|
|
averageaussie
Hazard to Self
Posts: 87
Registered: 30-4-2023
Location: Right behind you
Member Is Offline
Mood: school
|
|
if only it was just one day...
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
