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Author Topic: What Do The Various Pipe Colors Mean?  (Read 3897 times)

LotusSevenMan

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Re: What Do The Various Pipe Colors Mean?
« Reply #15 on: February 10, 2008, 09:23:19 AM »
"Thank goodness for synthetic oil!"

But only after the break-in/running in period has been completed to your satisfaction!
If it ain't broke-------------------------- fix it 'till it is!

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cyrusb

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Re: What Do The Various Pipe Colors Mean?
« Reply #16 on: February 12, 2008, 03:20:27 PM »
Sooo,What do the colors mean? Don't know, but I can tell you in the metals world blue and purple are cooler than yellow(straw).

LotusSevenMan

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Re: What Do The Various Pipe Colors Mean?
« Reply #17 on: February 12, 2008, 08:29:41 PM »
Sooo,What do the colors mean? Don't know, but I can tell you in the metals world blue and purple are cooler than yellow(straw).

But in the 'real world' of engineers blue and purple are definitely HOTTER!!!! ha ha
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cyrusb

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Re: What Do The Various Pipe Colors Mean?
« Reply #18 on: February 12, 2008, 09:42:55 PM »
   Really? heres my world....
 
       
   
 
Metal Temperature by Color
--------------------------------------------------------------------------------
 
 

Color Approximate Temperature
F C K

--------------------------------------------------------------------------------
 
Faint Red 930
 500
 770
 
Blood Red 1075
 580
 855
 
Dark Cherry 1175
 635
 910
 
Medium Cherry 1275
 690
 965
 
Cherry 1375
 745
 1020
 
Bright Cherry 1450
 790
 1060
 
Salmon 1550
 845
 1115
 
Dark Orange 1630
 890
 1160
 
Orange 1725
 940
 1215
 
Lemon 1830
 1000
 1270
 
Light Yellow 1975
 1080
 1355
 
White 2200
 1205
 1480
 
 
 
 
--------------------------------------------------------------------------------
 
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Foggy_Auggie

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Re: What Do The Various Pipe Colors Mean?
« Reply #19 on: February 13, 2008, 02:39:12 AM »
   Really? heres my world....
 
       
   
 
Metal Temperature by Color
--------------------------------------------------------------------------------
 
 

Color Approximate Temperature
F C K

--------------------------------------------------------------------------------
 
Faint Red 930
 500
 770
 
Blood Red 1075
 580
 855
 
Dark Cherry 1175
 635
 910
 
Medium Cherry 1275
 690
 965
 
Cherry 1375
 745
 1020
 
Bright Cherry 1450
 790
 1060
 
Salmon 1550
 845
 1115
 
Dark Orange 1630
 890
 1160
 
Orange 1725
 940
 1215
 
Lemon 1830
 1000
 1270
 
Light Yellow 1975
 1080
 1355
 
White 2200
 1205
 1480
 
 
 
 
--------------------------------------------------------------------------------
 
Use of this site indicates you accept the Terms of Use
Copyright 1995-2003,  Process Associates of America.  All Rights Reserved. 


You're talking a heating temperature color that disappears when the metal cools.  And it looks like a ferrous metal chart.   Bikers are talking crome plated mild steel with a permanent hue to the chrome plate after cooling.  It's all in the chrome!  ;)

Think your pulling our leg!  :D
Diagonally parked in a parallel universe.

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cyrusb

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Re: What Do The Various Pipe Colors Mean?
« Reply #20 on: February 14, 2008, 02:08:14 AM »
They are heat treating temps, as you can see blue and purple (being cold colors) are not even on the chart. If you take a piece of  polished steel and slowly heat it you will see all those colors. Note that I said polished, just like the pipes. Blue and violet are allways the first colors to appear, and at a temp you can get in a household oven.I blue clock hands in this manner,You only see the colors vividly if the metal is highly polished. Try it yourself.

Thumper

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Re: What Do The Various Pipe Colors Mean?
« Reply #21 on: February 14, 2008, 12:35:12 PM »
They are heat treating temps, as you can see blue and purple (being cold colors) are not even on the chart. If you take a piece of  polished steel and slowly heat it you will see all those colors. Note that I said polished, just like the pipes. Blue and violet are allways the first colors to appear, and at a temp you can get in a household oven.I blue clock hands in this manner,You only see the colors vividly if the metal is highly polished. Try it yourself.

That is simply not true in my experience. My motorcycle pipes have always yellowed. Those that have thinner walls in the exhaust header and/or have run much hotter go on to blue.

Matt

cyrusb

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Re: What Do The Various Pipe Colors Mean?
« Reply #22 on: February 14, 2008, 01:46:07 PM »
Hey, whatever, these are just some facts that might apply. This table might apply even more to the pipe colors.

[old attachment deleted by admin]
« Last Edit: February 14, 2008, 04:40:24 PM by cyrusb »

fredgold52

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Re: What Do The Various Pipe Colors Mean?
« Reply #23 on: February 15, 2008, 08:10:31 PM »
Hi Cyrus,

Your second table seems to line up more with what I always thought about exhaust pipe colors.  It does seem to be almost the opposite of the heat treat color table you posted first.  What is the second table talking about and why is it different from the first table. 

Now I'm all screwed up.  Possibly information overload, it'll do that to me ya know.

 :)
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