Polyethyleneterephthalate
It is an unreinforced, semi-crystalline thermoplastic polyester.
Its main advantages are its great mechanical strength, excellent dimensional stability (better than POM), abrasion resistance and very good shear properties. It also has good electrical properties; it is physiologically acceptable and flame retardant. It has very low water absorption, which does not affect its mechanical and electrical properties. Its very low thermal expansion coefficient puts it among the leading thermoplastics. This material is easily glued and welded.
Material No.: 1301
Density ISO 1183: 1.40 g/cm3
Density ISO 1183: 1.40 g/cm3
| Mechanical properties | ||
| Tensile strength at yield | ISO 527 | 80 MPa |
| Elongation | ISO 527 | 70 % |
| E-Modulus of tensile elasticity | ISO 527 | 2800 MPa |
| Brinell Hardness | ISO 2039-1 | 150 MPa |
| Brinell Hardness Number | H358/30 | |
| Shore (A/D) or Rockwell (R/L/M) Hardness | ISO 868, ISO 2039-2 | D83 |
| Electrical properties | ||
| Permittivity at 50 Hz | IEC 60250 | 3.4 |
| Permittivity at 1 MHz | IEC 60250 | 3.2 |
| Dielectric loss factor at 50 Hz | IEC 60250 | 20 E-4 |
| Dielectric loss factor at 1 MHz | IEC 60250 | 210 1E-4 |
| Dielectric strength | IEC 60243-1 | 60 kV/mm |
| Specific dielectric resistance | IEC 60093 | 2.1014 Ωm |
| Surface resistance | IEC 60093 | 6.10E14 Ω |
| CTI Tracking resistance | IEC 60112 | 35 |
| Thermal properties | ||
| Thermal conductivity | DIN 52 612 | 0.24 W/K.m |
| Coefficient of transverse expansion, linear | ISO 11359 | 70 10-6/K |
| Melt or vitrification temperature | ISO 11357 | 255 °C |
| Heat distortion resistance A | ISO 75 HDT/A (1.8 MPa) | 80 °C |
| Heat distortion resistance B | ISO 75 HDT/B (0.45 MPa) | 115 °C |
| Max. short-term temperature | 180 °C | |
| Max. long-term temperature | 100 °C | |
| Min. operating temperature | -50 °C | |
| Other properties | ||
| Water absorption under regular conditions | ISO 62 | 0.2 % |
| Water absorption in humidity | ISO 62 | 0.5 % |
| Burning behaviour according to UL 94 | IEC 60695-11-10 | HB |
| Special properties | ||
| Tensile creep modulus (0.5% 1000 hrs) | ISO 899-1 | 20006) MPa |
| Fatigue in flexure | ASTM D671 | 31 MPa |
| Izod notched impact strength at 23 °C | ISO 180/4A | 20 J/m |
| Coefficient of slip creep compared to steel | 0.34 | |
| Wear relative to the measured unit | 10.8 (µm/km)/MPa | |
| Specific heat capacity | IEC 1006 | 1.50 J/g K |
| LOI Acid index | ISO 4589 | 25 % |
| 6) Tensile creep modulus 1%/1000 hrs |
