nylon 12 vs. nylon 6/6
nylon 12 vs. nylon 6/6
(OP)
What are the major differences between these two grades of nylon?
I've found that nylon 12 is more resistant to chemicals, and I've also seen that nylon 12 may retain more of it's mechanical properties after UV exposure. Are there other significant differences?
I've received a request from our purchasing department to switch a nylon 12 cable tie to nylon 6/6 in order to reduce cost. We're using the cable ties to mount a piece of our equipment to a pipe in an outdoor environment. I'm not too concerned about chemical resistance but UV stability and performance over a wide temperature range are critical. We would at the very least switch to a UV stabilized nylon 6/6.
All thoughts and comments are welcomed.
I've found that nylon 12 is more resistant to chemicals, and I've also seen that nylon 12 may retain more of it's mechanical properties after UV exposure. Are there other significant differences?
I've received a request from our purchasing department to switch a nylon 12 cable tie to nylon 6/6 in order to reduce cost. We're using the cable ties to mount a piece of our equipment to a pipe in an outdoor environment. I'm not too concerned about chemical resistance but UV stability and performance over a wide temperature range are critical. We would at the very least switch to a UV stabilized nylon 6/6.
All thoughts and comments are welcomed.






RE: nylon 12 vs. nylon 6/6
If you don't need the chemical resistance, then a UV-stabilized PA 6,6 could be considered.
Regards,
Cory
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RE: nylon 12 vs. nylon 6/6
Nylon 12 is around 4 times the cost of 6.6.....
RE: nylon 12 vs. nylon 6/6
Appart from qualities already mentioned, type 12 is tougher and more ductile and shrinks somewhat less when moulding.
Regards
eng-tips, by professional engineers for professional engineers
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RE: nylon 12 vs. nylon 6/6
Forgot - nylon 6.6 does not like Zinc salts - if you are tieing onto a galvanized pipe, be very, very afraid!!
RE: nylon 12 vs. nylon 6/6
Up early Pat!!
RE: nylon 12 vs. nylon 6/6
As Cory explained nylon 12 is like a cross between PE and nylon 6,6 if that helps you imagine it's properties. You can compare at www.matweb.com
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- James Branch Cabell
RE: nylon 12 vs. nylon 6/6
Cable ties tend to be thin and are conditioned by atmospheric moisture in a fairly short time frame. Depending on conditions, it is a mater of weeks normally.
Pud is correct about susceptibility to zinc salts.
The correct UV stabilisers give quite a long life outdoors.
Yes, I am up quite late.
Regards
eng-tips, by professional engineers for professional engineers
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RE: nylon 12 vs. nylon 6/6
If you are not running continuously over say 80 deg C, you may as well use nylon 6. Even cheaper.
RE: nylon 12 vs. nylon 6/6
Thanks very much for the information. The susceptibility to zinc salts is enough to convince me to steer clear of nylon 6/6.
RE: nylon 12 vs. nylon 6/6
RE: nylon 12 vs. nylon 6/6
I have a hunch that you can get cable ties in PBT - this should be cheaper than PA12 and no zinc problem as PA. Good outdoors too "as is" - excellent with uv stabilizers.
Cheers
Harry