Tapping into PEEK

[vc66]

Anybody have any info on whether unfilled PEEK can be tapped into, or if it needs helicoils? My gut tells me that helicoils are necessary, but I just don't have any info to back it up. It'd be an M5 tapped hole, and I'd be putting about 40lbs on the thread, in tension.

Thanks.

V

 

[KENAT]

Not sure about PEEK but we routinely tap pomalux & I think delrin.

http://www.westlakeplastics.com/pdf/PB pomalux.pdf

I was nervous the first time I tapped pomalux but it seems to hold #4-40's OK.

KENAT, probably the least qualified checker you'll ever meet...

 

[btrueblood]

Peek has a lot higher tensile than POM. But, if you are looking at a situation where you would normally put a helicoil in (say) soft aluminum, then put coils in the PEEK.

 

[coatingengineer]

Hi.

Depending on PEEK (and there are choices), tensile strength as high as 15,000 psi is reported at ambient temperature (ISO 527-2/18/50).

What I really like about this material is the retention of mechanical properties, even when its glass transition temperature is exceeded.

Here, if you think this helps:
<a href="

http://www.industrialcoatingsworld....atings/PEEK-Corrosion-Resistant-Coating.html"

target="_new">PEEK Corrosion Resistant Coating</a>

Good luck!


William Gunnar

http://www.IndustrialCoatingsWorld.com

 

[BiPolarMoment]

I can't tell you if it will meet your specs but the medical industry has been tapping PEEK for years.