I'm looking for a new product line and currently looking for a kind of plastic that is (of course) injectable, with VERY strong torsional strength capabilities. Another application is I'm looking for plastics that can replace steel to reduce weight but with similar "strength" if you will.

If you know of any exotic or new plastic blend, please let me know.

 

Would you mind first explaining (in very general terms) what you're building (PM me if need be)? The size or intricacy may mean some plastics can't easily be used. Even general dimensions would be helpful. I'm looking into a few things that you might be able to use - I'll reply again shortly.

 

Do you need good impact resistance? Thermal stability? Any machining required? Water absorption a big issue?

 

Check out this link and the company itself - they're pretty comprehensive with the plastics.

Nylon

Nylon 46 - Bridges the price-performance gap between traditional nylons and high performance materials. Suitable for both extrusion and injection molding, Nylon 46 offers a range of functionality including extensive UL classifications and specialized wear and bearing grades.

Noryl

 

IMO go with www.smooth-on.com the best product I've worked with is c-1508 as far as pourable plastic goes.

 

1a-race: I believe those would work for making molds, but from what I gather, mingster is looking to use the plastic IN the molds (ie, inject it into a mold), not for making the molds themselves. The plastics you show have a tensile strength of under 4500 psi for most - that's anywhere from 1/6 or less than the tensile strength of most steels. It can't even remotely replace steel for strength and I would warrant it's even weaker in torsion or flexure.

 

Good point, I use the above mentioned product for mold making however I use what they call featherlight for the actuall piece. It is possible to use the 1508 in both, I've done it but my product doesn't warrant the need for it. BTW it is rated at 11,200psi. I am really interested in what he has to make in plastic but as strong as steel.

 

How about Kevlar?

 

JonBoy and 1a-race, what do each of you do?

I work with and develop a lot of plastic product and both of your knowledge is pretty impressive.

Just curious.

 

It is top secret until the release of the product next week but i'll give you a hint, it has to do with the s2000.