Stainless exhaust=load of horse****

So, I still have pipe laying around from changing my exhaust out. I cleaned some of the old pipe with a wire wheel, hmm, this sure doesnt look like stainless... grab a magnet, not staiinless in the least bit. Had my car up, checked headers, nope, checked immediately after flex pipe, nope. The only thing I couldnt check was the muffler. So to all those who say the exhaust on the 09+ is stainless, hate to say, but its not. And the article that says it is is for GM canada​. Im not sure if they changed the exhaust for canadian cars or something, but my 2010 sure as **** isnt stainless

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Originally Posted by Pickles

So, I still have pipe laying around from changing my exhaust out. I cleaned some of the old pipe with a wire wheel, hmm, this sure doesnt look like stainless... grab a magnet, not staiinless in the least bit. Had my car up, checked headers, nope, checked immediately after flex pipe, nope. The only thing I couldnt check was the muffler. So to all those who say the exhaust on the 09+ is stainless, hate to say, but its not. And the article that says it is is for GM canada​. Im not sure if they changed the exhaust for canadian cars or something, but my 2010 sure as **** isnt stainless

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"my 2010 sure as **** isnt stainless" and "grab a magnet, not staiinless in the least bit."

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Well Pickles, I'll tell this to you straight. You have a lack of knowledge when it comes to metals.

Go grab a stainless steel fork or knife out of your kitchen and put a magnet to it. If I were you I would not pursue this argument further.

(BTW, I have enormous respect for anyone who can admit when they are in error, but no respect for those who might argue defensively and cannot admit it.)

Every stainless i have dealt with is either not magnetic or significantly less magnetic than regular steel. I work in a hardware store and all SS is nonmagnetic. That said, I do understand the magnet test isn't concrete evidence. But just looking at it it doesn't look like SS either. Just seems fishy to me

Also, seems awfully close-minded of you to say you have no respect for those who defend their beliefs

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Originally Posted by Pickles

Also, seems awfully close-minded of you to say you have no respect for those who defend their beliefs

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You are absolutely correct. I agree with your assessment of me. I'm the most closed-minded man on earth when it comes to facts.

But I know that stainless steel is magnetic - that's a fact. And I understand the crucial difference between a belief and a fact.

Shots fired!!

But really, aside from the argument, would it really matter much if it wasn't SS?

I don't plan on singing kumbaya here but there are more civil ways to approach a topic. ...from both sides.

That being said, I'm not going to pick on anyone just post what should have been the replay from the start. Remember, it's easier to make a defense of and point with SUPPORTING information. ...not a club to the head.

The most widely used austenite steel is the 304, also known as 18/8 for its composition of 18% chromium and 8% nickel. This is the most commonly used type for the aftermarket auto industry (keep in mind, that doesn't mean it's the best).
The second most common austenite steel is the 316 grade, also called marine grade stainless, used primarily for its increased resistance to corrosion. A typical composition of 18% chromium and 10% nickel, commonly known as 18/10 stainless, is often used in cutlery and high quality cookware.

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Originally Posted by Thymeclock

You are absolutely correct. I agree with your assessment of me. I'm the most closed-minded man on earth when it comes to facts.

But I know that stainless steel is magnetic - that's a fact. And I understand the crucial difference between a belief and a fact.

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That's not a fact. 300 series grades of stainless are non magnetic. FACT

Wooo people. Everyone is right. Cheap stainless is magnetic, good stainless is non magnetic.

I was figuring everyone would connect the dots but... 316 stainless (300 series stainless) is very high quality and it IS magnetic, ie, the kitchen knife example. There are other stainlesses that have varying degrees of magnetism as well.

Chromium makes a metal "stainless" and Carbon makes it magnetic. You CAN have both properties in one metal.

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Originally Posted by gse_turbo

I was figuring everyone would connect the dots but... 316 stainless (300 series stainless) is very high quality and it IS magnetic, ie, the kitchen knife example. There are other stainlesses that have varying degrees of magnetism as well.

Chromium makes a metal "stainless" and Carbon makes it magnetic. You CAN have both properties in one metal.

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This link (click here) will help "connect the dots".

To return to the initial point of the thread: just because a stainless steel component is magnetic, that doesn't mean it's not stainless steel. And that's a fact, not just horse manure. ;)

Good source material. :thumbup:

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Originally Posted by Thymeclock

This link (click here) will help "connect the dots".

To return to the initial point of the thread: just because a stainless steel component is magnetic, that doesn't mean it's not stainless steel. And that's a fact, not just horse manure. ;)

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I did not deny that in my second post. However you said "stainless steel is magnetic-thats a fact" when in fact (pun intended) it is NOT. Some is, but not the 300 series that would be used on an exhaust. FACT

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Originally Posted by Pickles

I did not deny that in my second post. However you said "stainless steel is magnetic-thats a fact" when in fact (pun intended) it is NOT. Some is, but not the 300 series that would be used on an exhaust. FACT

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Here's your second post, verbatim:

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Every stainless i have dealt with is either not magnetic or significantly less magnetic than regular steel. I work in a hardware store and all SS is nonmagnetic. That said, I do understand the magnet test isn't concrete evidence. But just looking at it it doesn't look like SS either. Just seems fishy to me

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Your statements in your second post are contradictory at the least. But in your first post you were adamant that the magnet test was irrefutable: "...grab a magnet, not staiinless in the least bit. Had my car up, checked headers, nope, checked immediately after flex pipe, nope. The only thing I couldnt check was the muffler. So to all those who say the exhaust on the 09+ is stainless, hate to say, but its not."

You can't tell stainless steel (especially used exhaust components) just by looking at it. Nor is the magnet test definitive. How do you know that the 300 type (which is non-magnetic) would be the only possible form of stainless used for an exhaust system?

Do you really think that a major car manufacturer would state that an exhaust system is stainless if it isn't?

Skepticism, doubt and adamant rants are not considered proof.

http://www.youtube.com/watch?v=Y1hcc1QvM2Q


almost every stainless exhaust i have seen is magnetic.. they are not going to take surgical quality stainless steel and mount it underneath a car..

Q: I was always told stainless steel isn't magnetic. Why does a magnet stick to my stainless steel exhaust

A:
What you've heard about the magnetism of stainless steel is only partially true. Many grades of stainless steel are magnetic. It is only in the grades that have nickle added to their alloy, that loose their magnetic properties. We have noticed that our 409 Stainless steel products are a little magnetic but our 304 Polished Stainless steel pipes have little or no magnetic properties until they are stretched. Then they gain magnetic qualities!

For more information about stainless steel and it's properties, have a look atWikipedia's write-up about Stainless Steel.

Pypes Performance Exhaust - Home Page

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Originally Posted by petrified.rabbit

Q: I was always told stainless steel isn't magnetic. Why does a magnet stick to my stainless steel exhaust

A:
What you've heard about the magnetism of stainless steel is only partially true. Many grades of stainless steel are magnetic. It is only in the grades that have nickle added to their alloy, that loose their magnetic properties. We have noticed that our 409 Stainless steel products are a little magnetic but our 304 Polished Stainless steel pipes have little or no magnetic properties until they are stretched. Then they gain magnetic qualities!

For more information about stainless steel and it's properties, have a look atWikipedia's write-up about Stainless Steel.

Pypes Performance Exhaust - Home Page

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still noticeably less magnetism than regular steel. My pipes are just as magnetic as regular steel

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Originally Posted by Thymeclock

Here's your second post, verbatim:



Your statements in your second post are contradictory at the least. But in your first post you were adamant that the magnet test was irrefutable: "...grab a magnet, not staiinless in the least bit. Had my car up, checked headers, nope, checked immediately after flex pipe, nope. The only thing I couldnt check was the muffler. So to all those who say the exhaust on the 09+ is stainless, hate to say, but its not."

You can't tell stainless steel (especially used exhaust components) just by looking at it. Nor is the magnet test definitive. How do you know that the 300 type (which is non-magnetic) would be the only possible form of stainless used for an exhaust system?

Do you really think that a major car manufacturer would state that an exhaust system is stainless if it isn't?

Skepticism, doubt and adamant rants are not considered proof.

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On that second post, I didn't notice it, that's a typo. It should say all SS there is non magnetic. (Fasteners)
Notice how right after that i said i know the magnet test isnt concrete? And there is really only 3 types of SS used in exhaust, 2 are 300 series, and the other is 409.

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Originally Posted by Pickles

On that second post, I didn't notice it, that's a typo. It should say all SS there is non magnetic. (Fasteners)
Notice how right after that i said i know the magnet test isnt concrete? And there is really only 3 types of SS used in exhaust, 2 are 300 series, and the other is 409.

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OK, so we'll forgive you for the "typo" and ignore the strident assumption that your stainless exhaust couldn't possibly be stainless steel.

As I said before, I have enormous respect for anyone who can admit when they are in error, but no respect for those who might argue defensively and cannot admit it.

So let's hope this thread has been as informative as it has been contentious. :icon_smile:

i am just curios what type of device you are measuring with to determine the amount of magnetic power of the exhaust pipe?

a spring dynamometer?

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Originally Posted by petrified.rabbit

i am just curios what type of device you are measuring with to determine the amount of magnetic power of the exhaust pipe?

a spring dynamometer?

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Yes. Both plain steel pipe from autozone and the factory pipe took 21lbs of force with the magnet i was using