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Old 10-24-2012, 10:16 AM   #1
AVANTI R5
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Default GM Turns to Magnesium Sheet Metal to Lighten Vehicles




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General Motors is pioneering the use of magnesium sheet metal on its vehicles with the possibility of double-digit fuel economy gains.

Other automakers are turning to carbon fiber to help lighten the load on their vehicles, but the General is going another direction. Itís currently testing an industry-first thermal-forming process and proprietary corrosion resistance treatment for lightweight magnesium sheet metal as an alternative to steel and aluminum.

According to GM, other automakers have struggled to reliably make strong and non-corroding magnesium sheet metal panels using traditional panel-forming methods. GM, on the other hand, is working on a patented process that can heat magnesium to 842 degrees Fahrenheit to allow the magnesium to be molded into precise, rigid shapes.

Magnesium weighs in at 33 percent less than aluminum, 60 percent less than titanium, and 75 percent less than steel helping lighten vehicles and in turn, increasing fuel economy.

The American automaker is showing off a production-ready magnesium rear deck lid inner panel that has been tested to withstand 77,000 robotic slams and 250-kilogram impact drops without any problems.
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Old 10-24-2012, 10:22 AM   #2
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Well it is a good thing magnesium is not highly flammable or anything
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Old 10-24-2012, 10:41 AM   #3
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nor expensive...
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Old 10-24-2012, 10:46 AM   #4
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fast forward to about the 1 minute mark when the magnesium transmission case gets hit with the water...
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Old 10-24-2012, 10:49 AM   #5
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Quote:
Originally Posted by SCRAPPYDO
Video Link: http://www.youtube.com/watch?v=KY9ri-UOoLo

fast forward to about the 1 minute mark when the magnesium transmission case gets hit with the water...
Whoa!!!!!!!!
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Old 10-24-2012, 10:55 AM   #6
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Stupid GM, why the hell didn't they remember to come to NASIOC first to make sure this wasn't a horrible idea?
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Old 10-24-2012, 11:04 AM   #7
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Great idea and alternative to carbon, plastic, or fiberglass

Based on the Viper community, I have a feeling that a lot of GM body panels are going to be melted accidentally in the future.
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Old 10-24-2012, 12:02 PM   #8
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I can't remember where I read it. But the article talks about how car companies are trying to make lighter cars, but it get's cancelled out because americans are getting fatter. we are nation of fatties

Also, not too keen on magnesium. They burn hot as hell. Their burning temp is off the chart. I'm sure the GM knows properties of magnesium.

Hopefully, it will turn out well. If not, there will be crap load of people ready to sue.
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Old 10-24-2012, 12:13 PM   #9
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If only GM had the existing technology to build vehicles with plastic or fibreglass bodies.
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Old 10-24-2012, 12:29 PM   #10
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Quote:
Originally Posted by SCRAPPYDO View Post
fast forward to about the 1 minute mark when the magnesium transmission case gets hit with the water...
I was expecting footage of LeMans 1955 but this will do.
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Old 10-24-2012, 12:32 PM   #11
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Originally Posted by poorlilpoop View Post
I can't remember where I read it. But the article talks about how car companies are trying to make lighter cars, but it get's cancelled out because americans are getting fatter.
That's silly, unless you believe car companies can only figure out how to shed 25 pounds of weight.

Quote:
we are nation of fatties
It's not just the U.S. Any place that has easy access to calories tends to see an increase in average weight. Biology is a bitch.
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Old 10-24-2012, 12:38 PM   #12
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If only GM had the existing technology to build vehicles with plastic or fibreglass bodies.
+1234
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Old 10-24-2012, 12:47 PM   #13
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Why not stop pumping weight into the damn thing in the first place? Make your engineers work and work with them.
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Old 10-24-2012, 01:06 PM   #14
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Is it 100% magnesium or is it some hybrid mix like with aluminum or something?

--kC
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Old 10-24-2012, 02:27 PM   #15
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Well it is a good thing magnesium is not highly flammable or anything
Maybe they can make a battery case for their PHEVs from this A match made in heaven... or wait was that hell
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Old 10-25-2012, 11:16 PM   #16
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Mag also hates oxygen. And I do not think that was water causing that explosion of white light.

Flames will cause mag to ignite and explode.
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Old 10-26-2012, 09:52 AM   #17
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Once mag is ignited it will burn and keep burning. Road flairs are basically magnesium. Light a flair and through it in water, it will get brighter and keep going. The water is what caused the accelerated burning. The burning will separate the oxygen from the hydrogen and they will both burn.

Never put of a mag fire with water. Any firemen want to chime in?

Peace,

Greg
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Old 10-26-2012, 10:18 AM   #18
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GM knows what they are doing and going green at the same time.

A friend of friend told me that they are going to coat the magnesium with a white phosphorus impregnated shellac... .
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Old 10-26-2012, 11:04 AM   #19
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GM knows what they are doing and going green at the same time.
Well, it's a good thing I've invested heavily into GM stock paid my taxes.
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Old 10-26-2012, 11:12 AM   #20
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Quote:
Originally Posted by left footed whooten View Post
Why not stop pumping weight into the damn thing in the first place? Make your engineers work and work with them.

It's all the federal safety requirements. Crumple zones, ABS required, DSC required, traction control required, air bags required. Add on six speed auto trans, leather, coffee maker, panoramic sunroof, 18 cup holders, quad DVD entertainment systems...

We are just now getting back to MPG numbers we had in the early to mid 80s in gas burners.

My roommate in college got 44mpg with his '85 Honda CRX. I wouldn't want to get hit by anything in that little tub, but it got good mileage and was fun to drive.

My '87 Honda Prelude, in college, got mid-30s mpg, I got as high as 37mpg on a highway run to FL. No ABS, air bags, etc. It was quick and fun to drive because there was nothing to it (2300lbs). If I could find another 1st or 2nd gen in decent condition, I'd probably snatch it up for a DD when I'm not hauling the kids (no room for car seats + >6' driver ).
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Old 10-26-2012, 11:18 AM   #21
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If this goes into production, it'll be interesting to see insurance rates for those vehicles. I would imagine this would add to the cost of a wreck or simple fender bender, depending on how much of the car is mag. I bet there will be cheap, steel non-oem panels for these cars being made just like every other car. Might behoove the owner to make sure they're getting genuine oem mag replacement panels.
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Old 10-26-2012, 11:23 AM   #22
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Quote:
Originally Posted by daveyboy View Post
A friend of friend told me that they are going to coat the magnesium with a white phosphorus impregnated shellac... .


Is this a new mil-spec design?

Quote:
Originally Posted by ADaughen
It's all the federal safety requirements. Crumple zones, ABS required, DSC required, traction control required, air bags required. Add on six speed auto trans, leather, coffee maker, panoramic sunroof, 18 cup holders, quad DVD entertainment systems...
Strangely a decent amount of it comes from safety towards what you hit. The ever-raising body lines and such in cars (which means more body in general also) comes from someone who decided it's safer for pedestrians when they are struck by cars.
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Old 10-26-2012, 11:30 AM   #23
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Magnesium is lighter and therefore will cost less to ship back and forth to China.
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Old 10-26-2012, 11:34 AM   #24
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Magnesium is lighter and therefore will cost less to ship back and forth to China.
LOL!!!
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Old 10-26-2012, 11:39 AM   #25
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Quote:
Originally Posted by SCRAPPYDO View Post

fast forward to about the 1 minute mark when the magnesium transmission case gets hit with the water...
What the hell man?!
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