PBT

PBT polyesters are semi-crystalline. They are versatile materials with a good range of properties. They have excellent electrical properties and are abrasion resistant. PBT has been extensively compounded giving a very wide range of properties. PBT performs much like Nylon but can handle higher temperatures and does not absorb moisture. PBT has excellent impact strength but is very notch sensitive.

PBT is very anisotropic in shrinkage, so it is difficult to mold to extremely tight tolerances.

PBT Tensile Strength: 6,000-13,000 psi Flexural Modulus: 300,000-1,200,000 psi Impact Strength: 1 ft-lb/in notched izod . 30+ ft-lb/in un-notched Maximum Temp.: 420 F short duration 250 F long term Chemical Resistance: Fair to Good Cost: $$$