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Post Info TOPIC: Does metal weaken with age?


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Does metal weaken with age?



 With these Dynacorn bodies coming out does it pay to get one? For what they cost it is worth it?

-- Edited by 65Camino at 10:48, 2009-01-16

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When subjected to heat, cold, salt, moisture and stress, sure it weakens over age, the question is will you notice it?

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I don't think metal weakens    look at all the bridges and overpasses in Canada   they never fail so metal must last....

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You have obviously never been to Montreal...
I think it also makes a difference in the gauge you are talking about - I think 65Camino is talking about the stuff they use in car bodies.

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metal does weaken in time with all the weather condition we hqave

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69coupe2.jpgAstro Jet wrote:

You have obviously never been to Montreal...
I think it also makes a difference in the gauge you are talking about - I think 65Camino is talking about the stuff they use in car bodies.



       If you start buying floors, rockers, quarters etc, you cant "get it done" for the price of a new body.. Are you asking, if the bodies are made of recycled steel??  I asked before, and still wonder about the Camaro body..  I can get one for 15 , but someone said they didnt fit... Do you think they are better now?


-- Edited by 427carl at 19:21, 2009-01-16

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No, I was thinking about getting a new "body" and wondered if it was worth it. I can get a rough driver car for a little more then what they want for these Dynacorn units go for.

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I just bought the rust free Ventura for the same reason    Once, you've had a southern car you wont want a 15,ooo fixer upper   Because you can't get a rust free Mustang, the new one is the way to go   my 2 cents..   Have you heard anymore on the fit ?    My friend in New Brunswick is a dealer for (Dynacorn-Gold Leaf?) and was going to sell me one, I could pick up in Toronto

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Ask him what they are worth if I pick it up at the shop here in Toronto? Also ask him if they can be had without the side scoops?

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I am e-mailing him now!!!

-- Edited by 427carl at 20:12, 2009-01-16

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The metallury of the steel will not change over time but what does happen due to outside elements is it oxidizes causing weakness

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Ken    have you ever checked out those thingies that attach to your car and get rid of the rust genes??   I would buy one for Chief and Sprint if they work....

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427carl wrote:

Ken    have you ever checked out those thingies that attach to your car and get rid of the rust genes??   I would buy one for Chief and Sprint if they work....



Keep it out of the dampness, don't drive it in the salt - then mix the salt with water and they'll be fine-likely last twice as long as they have so far seeing the first few years they were exposed to the elements, oil spray works for your drivers, never did anything with them gadgets but the salespeople sure swear by them



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My Chief is a original panel Toronto car, that was not winter driven new, and undercoated by Andy in Moncton, and its in great shape, and its in very dry storage now.. I had a very smart manconfuse tell me that my Ventura,  (new in California- lived in Oregon) will rust now that its in Canada...  really    He says the air is moist here, and the car will just turn to rust shortly  disbelief

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We have one of the rust boxes on our 01 grand prix and not a spot of rust,even the floor under the car is still gm gray.no undercoating also was done on this car!

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427carl wrote:

My Chief is a original panel Toronto car, that was not winter driven new, and undercoated by Andy in Moncton, and its in great shape, and its in very dry storage now.. I had a very smart manconfuse tell me that my Ventura,  (new in California- lived in Oregon) will rust now that its in Canada...  really    He says the air is moist here, and the car will just turn to rust shortly  disbelief



how long will that take ? keep it out of the weather store it dry-it'll be fine



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68 327 4spd wrote:

We have one of the rust boxes on our 01 grand prix and not a spot of rust,even the floor under the car is still gm gray.no undercoating also was done on this car!



       Whats the deal on it?  What brand?  wink



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67BBSD wrote:

427carl wrote:

I had a very smart manconfuse tell me that my Ventura,  (new in California- lived in Oregon) will rust now that its in Canada...  really    He says the air is moist here, and the car will just turn to rust shortly  disbelief



how long will that take ? keep it out of the weather store it dry-it'll be fine



     I just let him ramble.. He "set the tone" about the "type of guy" he was...      He was believing, that the Canadian climate, would turn it to a rust bucket in weeks!   Its sitting in the garage with heat at 55 and a fan running circulating air.. So you think it will be OK til spring?  lol



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Remember the Comet Jet Aircraft that was withdrawn (Crashes due to metal fatigue) Remember the bridges in the USA that are now breaking up frequntly due to Fatigue?

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427carl wrote:

 

68 327 4spd wrote:

We have one of the rust boxes on our 01 grand prix and not a spot of rust,even the floor under the car is still gm gray.no undercoating also was done on this car!



       Whats the deal on it?  What brand?  wink

 


I had one of those electronic boxes on a 01 Lincoln LS. That car was rusty! I thought it must have been put on backwards, promoting rust. 

 



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Fatigue is a completely different failure mechanism Fatigue occurs in metals only when they are stressed (high loads applied). Over time stress cracks can develope and result in failure.

A stamped steel car body is not generally under much stress. Perhaps a car that is autocrossed may show signs of cracking in high stress areas. 64- 72 GM A bodies frames are very common for developing stress cracks in the forward area.

The bridge that collapsed in Minneapolis was determined to have the joint stiffening plates made from much thinner metal than spec'd. (I don't recall exactly but it was something like 5/8" plate instead of 7/8"). This resulted in a high stress concentration in the joints which lead to fatigue failure of the plates and ultimately the bridge. They are madly changing the plates on other bridges built by that contractor (I was told there were about a dozen more scaterred around the US).

If the correct plates were used the stress levels would never have been high enough to cause the fatigue failure.

Corrosion is a completely different failure mechanism although... Highly stressed metal is also more susceptible to corrosion.

Gary


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Damn Gary, you just typed a much more educated answer than i was going to give....

my simple answer: metal does not weaken with age. its is billions of years old before we even start working with it.

Age is not a factor on its own. other factors like stress, oxidation, temperatures etc affect metals and alloys...alloys in construction are designed to withstand several types of forces, shear, fatique, shapes and connectors are designed to resist moments etc...

ak

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It was done at the dealer when new,hookes up to the battery and sends a current throught the car to stop rust.works good got the car to prove it.biggrin

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Metal does not weaken with age, but the mechanical properties will actually change slightly over time.
Coils of galv that come off our line actually are thought to have a "best before" time to get blanked by the customer. Old coils (old dogs) have been known to cause problems with the stamper in the past.
If not mistaken, I believe the material will actually become harder with time.

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