Powdercoating effects structure? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Canada20 · 12-30-2002, 04:54 PM

This one sounds far fetched to me but people were asking about powdercoating wheels on another forum I play on and the response they got was to not do it because it decreases the strength of the wheel by %50. That sounds pretty far fetched to me so I thought I'd come to ye gurus for clarification...

TIA

Greg:p

**1971Stepside** · 12-30-2002, 04:58 PM

NO WAY! All it is is powder that is melted onto the metal. The metal is heated to around 410 degees F. This will not weaken the metal in anyway. It is brought to temp slowly and cooled slowly. There are several sights that you can send them to that answer these questions. Let me see if I can dig one up....

minibike · 12-30-2002, 05:00 PM

There are some concerns about heating certain types of aluminum and aluminum alloys, but I am not aware of any problems with carbon steel (what most of our trucks are made of).

minibike · 12-30-2002, 05:03 PM

The following site had this to say:

For powder coating aluminum the normal cure temperature can change the molecular makeup, aluminum parts that have critical strength properties are powder coated with a low cure powder and cured @ 320 degrees

http://www.aculink.net/~murph/page4.html

Big69C20 Toy · 12-30-2002, 05:18 PM

On steel no way. on aluminum however it might begin to take the metal to a stress relieving temp and could possibly weaken it... unsure though

**1971Stepside** · 12-30-2002, 05:23 PM

Here is a link I found that had some FAQ's on it. It didn't really get into Aluminum though.

http://www.powdercoatinginc.com/FAQ.htm

Canada20 · 12-30-2002, 05:57 PM

Wow...quick replies as always, thanks all.

I haven't checked the links yet (I will though) but from what you've said so far, there may be something to what these guys were talking about (I confess....it was an import forum

and one of the guys was talking about getting alloy wheels powdercoated.) Nice to know that for my truck parts there's no danger though....good news! Would any powdercoating shop have the lower-temp stuff or would that be for a more exotic place to do?

Thanks again,

Greg

(Just had a quick look at those links....good info)

**1971Stepside** · 12-30-2002, 06:11 PM

Any shop should be able to get that powder if they don't already have it. Likewise, most shops carry the powder that can withstand very high heat for headers etc.

Hooter · 12-30-2002, 08:00 PM

The thing I have heard about coating headers is that it doesn't last too long because of all the heating and cooling. I have heard that after a little while it all just cracks off

12-30-2002, 04:54 PM	#1
Canada20 Registered User Join Date: Jun 2001 Location: Calgary, Alberta, Canada Posts: 802	Powdercoating effects structure? This one sounds far fetched to me but people were asking about powdercoating wheels on another forum I play on and the response they got was to not do it because it decreases the strength of the wheel by %50. That sounds pretty far fetched to me so I thought I'd come to ye gurus for clarification... TIA Greg:p __________________ No such thing as a stupid question, right?

12-30-2002, 04:58 PM	#2
1971Stepside Almost Satisfied Join Date: Mar 2002 Location: Springfield, MO Posts: 2,932	NO WAY! All it is is powder that is melted onto the metal. The metal is heated to around 410 degees F. This will not weaken the metal in anyway. It is brought to temp slowly and cooled slowly. There are several sights that you can send them to that answer these questions. Let me see if I can dig one up.... __________________ 1971 C10 Stepside. LSx 6.0 with BTR Stage IV, Speed Engineering Headers, 4L80e transmission w/3200 Circle-D Stall. 3.73. Posi. Purchased this truck when I was 17. I started the rebuild (or take apart) in 1993. I have drug it around all over the country in pieces. Finally back on the road in 2021. "I can't complain, but sometimes I still do. Life's been good to me so far."

12-30-2002, 05:00 PM	#3
minibike Registered User Join Date: Jun 2002 Location: Lafayette, LA Posts: 500	There are some concerns about heating certain types of aluminum and aluminum alloys, but I am not aware of any problems with carbon steel (what most of our trucks are made of). __________________ 69 SWB LT1/4L60E www.classicplace.com

12-30-2002, 05:03 PM	#4
minibike Registered User Join Date: Jun 2002 Location: Lafayette, LA Posts: 500	The following site had this to say: For powder coating aluminum the normal cure temperature can change the molecular makeup, aluminum parts that have critical strength properties are powder coated with a low cure powder and cured @ 320 degrees http://www.aculink.net/~murph/page4.html __________________ 69 SWB LT1/4L60E www.classicplace.com

12-30-2002, 05:18 PM	#5
Big69C20 Toy Livin' it up. Join Date: Nov 2001 Location: Richland, MI Posts: 2,212	On steel no way. on aluminum however it might begin to take the metal to a stress relieving temp and could possibly weaken it... unsure though __________________ -Greg; Sold the 69 C20. It's off to a better home with more love! Now onto the 86 CUCV M1009; K5 blazer with 6.2L diesel, corp 10 bolt axles, Detroit locker in the rear, trutrac front, 3.73 gears, 35" tires.

12-30-2002, 05:23 PM	#6
1971Stepside Almost Satisfied Join Date: Mar 2002 Location: Springfield, MO Posts: 2,932	Here is a link I found that had some FAQ's on it. It didn't really get into Aluminum though. http://www.powdercoatinginc.com/FAQ.htm __________________ 1971 C10 Stepside. LSx 6.0 with BTR Stage IV, Speed Engineering Headers, 4L80e transmission w/3200 Circle-D Stall. 3.73. Posi. Purchased this truck when I was 17. I started the rebuild (or take apart) in 1993. I have drug it around all over the country in pieces. Finally back on the road in 2021. "I can't complain, but sometimes I still do. Life's been good to me so far."

12-30-2002, 05:57 PM	#7
Canada20 Registered User Join Date: Jun 2001 Location: Calgary, Alberta, Canada Posts: 802	Wow...quick replies as always, thanks all. I haven't checked the links yet (I will though) but from what you've said so far, there may be something to what these guys were talking about (I confess....it was an import forum and one of the guys was talking about getting alloy wheels powdercoated.) Nice to know that for my truck parts there's no danger though....good news! Would any powdercoating shop have the lower-temp stuff or would that be for a more exotic place to do? Thanks again, Greg (Just had a quick look at those links....good info) __________________ No such thing as a stupid question, right? Last edited by Canada20; 12-30-2002 at 06:01 PM.

12-30-2002, 06:11 PM	#8
1971Stepside Almost Satisfied Join Date: Mar 2002 Location: Springfield, MO Posts: 2,932	Any shop should be able to get that powder if they don't already have it. Likewise, most shops carry the powder that can withstand very high heat for headers etc. __________________ 1971 C10 Stepside. LSx 6.0 with BTR Stage IV, Speed Engineering Headers, 4L80e transmission w/3200 Circle-D Stall. 3.73. Posi. Purchased this truck when I was 17. I started the rebuild (or take apart) in 1993. I have drug it around all over the country in pieces. Finally back on the road in 2021. "I can't complain, but sometimes I still do. Life's been good to me so far."

12-30-2002, 08:00 PM	#9
Hooter My other Love Join Date: Aug 2001 Location: Castlegar B.C. Canada Posts: 4,085	The thing I have heard about coating headers is that it doesn't last too long because of all the heating and cooling. I have heard that after a little while it all just cracks off __________________ Castlegar B.C.The great white North (Canada Eh!) Hooter_5@hotmail.com First generation Monte Carlo club pictures of my life



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