I see wheels that are Forged, SSF, Cast, Cast and Spun, Forged Mg. What do all these mean? Which is best for strength and weight?

 

>>I see wheels that are Forged, SSF, Cast, Cast and Spun, Forged Mg. What do all these mean? Which is best for strength and weight?
>>

Forged - cold, compressed under tons of force into shape - the strongest, tends to be a bit heavy, but worth it in strenth

SSF - Semi Solid forging, a billet is heated to nearly glowing and compressed under extreme force. Lighter than forged or cast, almost as stong as forged.

Cast - molten material is forced or poured squeezed or injected into a mould. Classic and cost effective, can be light, but strenth is determined by mass.

Cast and spun - or for that matter ______ and spun. The 1st descriptor is the process used to make the center (spoke and flange area)
Spun ( think pottery wheel) is a material drawn and pulled out to dimention and thickness. only used for barrel section.

Forged MG? <~ where did you see that?

Alex


_________________
Alex ext 294

800 522 8473

Tire & Wheel forum moderator

www.tirerack.com

alex@tirerack.com

 

Each process has its own ups and downs.

Forged - so strong, but costly
SSF - strong, and light, not as strong or expensive as forged
Cast - cost effective, least ridgid
____ and spun - designated for multipiece contruction .

Alex

 

>>Forged MG? <~ where did you see that?
>>
>>Alex

Alex, I saw it on a site that had links to one of your competitors, so I won't post it here.

 

Please feel free to post any thing on wheel construction, tirerack or otherwise,
in this thread. Unfortunatly I wont be able to address that manufacturing process for you. Hopefully someone will be able to shed light on Forged MG for both of us.

Alex

>>>>Forged MG? <~ where did you see that?
>>>>
>>>>Alex
>>
>>Alex, I saw it on a site that had links to one of your competitors, so I won't post it here.

 

What about CNC machining what category does that fall under.

 

>>What about CNC machining what category does that fall under.

It would be a question of the contruction process of the billet your macheining.

Alex

_________________
Alex ext 294

800 522 8473

Tire & Wheel forum moderator

www.tirerack.com

alex@tirerack.com

 

In the generalest of terms, casting, where you dump molten material into a mold, leaves a random chrystalline structure in the metal, whereas the forging process orients the structure of those microscopic chrystals in patters and the orienting or arranging of those is what helps to makes forgings stronger.
The idea is to forge something to, as close as possible, the final intended shape, so that extra machining wont affect the structure of those chrystals; casting is usually a less precise process and the final shape can be obtained with machining ... CNC, numerical control, machining is just precise computerized machining ...

 

Here is one of the places I saw "Forged MG"
http://www.mysportscar.com/features/wheelweight.htm
BTW, it's a pretty cool wheel weight database.

 

Sounds like MG refers to Magnesium,
Mg is its symbol on the periodic table.

Alex

_________________
Alex ext 294

800 522 8473

Tire & Wheel forum moderator

www.tirerack.com

alex@tirerack.com

 

Interesting. Compared to Aluminum alloy, is Magnesium stonger?

 

Not to hijack this thread, but Alex, how come tirerack doesn't state the weel weight? It'd be so helpful!


>>Sounds like MG refers to Magnesium,
>>Mg is its symbol on the periodic table.
>>
>>Alex
>>
>>_________________
>>Alex ext 294
>>
>>800 522 8473
>>
>>Tire & Wheel forum moderator
>>
>>www.tirerack.com
>>
>>alex@tirerack.com

 

We can only put so much information on the webcite, I do agree, and this post should be very helpful.

Alex
>>Not to hijack this thread, but Alex, how come tirerack doesn't state the weel weight? It'd be so helpful!
>>
>>
>>>>Sounds like MG refers to Magnesium,
>>>>Mg is its symbol on the periodic table.
>>>>
>>>>Alex
>>>>
>>>>_________________
>>>>Alex ext 294
>>>>
>>>>800 522 8473
>>>>
>>>>Tire & Wheel forum moderator
>>>>
>>>>www.tirerack.com
>>>>
>>>>alex@tirerack.com

 

>>Not to hijack this thread, but Alex, how come tirerack doesn't state the weel weight? It'd be so helpful!
>>
>>

Yes it would be, I use This Link as a cross reference when I'm wheel upgrade dreaming.

X2

 

>>Interesting. Compared to Aluminum alloy, is Magnesium stonger?


Years ago, Mg was stronger ... modern aluminium is very good though ...
... the main thing is that magnesium is so much Lighter ...

 

Yeah, to reiterate what everyone else has already said. Forged Mg does stand for Forged Magnesium, which isn't necessarily stronger (in fact I think it's weaker than Al), but it's also a fair bit lighter. So you may have to use a greater volumer of Mg in the forging process to equal the strength of an Al wheel, but the overall wheel weight would be less.

 

*sigh* I wish I could get a forged admantium wheel...you know, the stuff that Wolverine has grafted to his skeleton and that his claws are made from. Oh well