Which is more rigid - PVC or Nylon rod?
Which is more rigid - PVC or Nylon rod?
(OP)
Hello,
I want a threaded plastic rod that doesn't bend (preferably 3/4 diameter and 2 ft. length).
Which material is more rigid: PVC or nylon
What other material would you suggest?
I want a threaded plastic rod that doesn't bend (preferably 3/4 diameter and 2 ft. length).
Which material is more rigid: PVC or nylon
What other material would you suggest?






RE: Which is more rigid - PVC or Nylon rod?
From a mechanics standpoint, a beam in bending will be stiffest if composed of a material with the highest possible elastic modulus. Both PVC and nylons (without reinforcements) are available with moduli around 3 GPa. If the section shape is free, then the lightest (and cheapest) and stiffest beam is derived from a material with the highest ratio of elastic modulus to mass density. Since PVC is ~ 10% to 20% higher in mass density, it will be worse than nylon.
Regards,
Cory
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: Which is more rigid - PVC or Nylon rod?
Your question is just to vague.
http://www.matweb.com
http://www.rtpcompany.com
both have very good data bases on plastics raw materials data.
On overall balance of properties normally required in constant high load applications, the materials of choice often end up being Glass filled nylon 6.6, Acetal, or Glass Filled PET.
Chemical exposure, UV light exposure, impact loads, cyclic loads and temperature range all have a significant effect on the choice.
Regards
eng-tips, by professional engineers for professional engineers
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.