Ertalyte® Sterra™ PET
- Chemical Family
- PolyestersPolyethylene Terephthalate (PET)
Ertalyte® Sterra™ PET is an unreinforced, semi-crystalline grade that is produced from proprietary resin grades made by Mitsubishi Chemical Advanced Materials. Characterized by its excellent wear resistance, low coefficient of friction, high strength, and resistance to moderately acidic solutions, this grade is capable of sustaining high loads and retains more of its original strength up to 180°F (85°C) than nylons or acetals. Due to these characteristics, Ertalyte® Sterra™ PET components are a favored solution for bearing and structural applications throughout the pharmaceutical, food processing and packaging, and oil and gas industries. As part of the Sterra™ product portfolio, this material contains recycled content and exhibits a significantly lower carbon footprint compared to similar materials derived from non-recycled feedstocks.
Properties
- Physical Form
- Bars, Rods
- Bars
- Rods
Other characteristics
- Brand
- Sterra™
- Polymer Name
- Polyethylene Terephthalate (PET)
- Color (Properties)
- Black
- Markets
- Industrial
- Printing & Packaging
- Flame Rating
- UL 94 HB
- Technology
- Plastics
- Labeling Claims
- Low Carbon Footprint (PCF)
- Recycled
- Color
- Black
- Material Features
- Acid Resistant
- High Loading Absorption Capability
- High Strength
- Low Coefficient of Friction
- Semi Crystalline
- Wear Resistant
- Certifications and Compliance
- UL 94
- Plastics and Elastomers End Uses
- Bearings
- Food Preparation Equipment
- Plastics and Elastomers Functions
- Resin
Technical data
Table 1 of 4
24 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Tensile Strength ⁷ ⁶ | 90 | MPa | ISO 527-1/-2 |
| Tensile Strain (Elongation, at Yield) ⁷ ⁶ | 4 | % | ISO 527-1/-2 |
| Tensile Strain (Elongation, at Break) ⁷ ⁶ | 15 | % | ISO 527-1/-2 |
| Tensile Modulus of Elasticity ⁹ ⁶ | 3500 | MPa | ISO 527-1/-2 |
| Shear Strength ⁶ | 8000 | PSI | ASTM D732 |
| Shear Strength ⁶ | 55 | — | — |
| Compressive Stress (at 1% Nominal Strain) ¹⁰ ⁶ | 33 | MPa | ISO 604 |
| Compressive Stress (at 2% Nominal Strain) ¹⁰ ⁶ | 64 | MPa | ISO 604 |
| Compressive Stress (at 5% Nominal Strain) ¹⁰ ⁶ | 107 | MPa | ISO 604 |
| Unnotched Charpy Impact Strength ⁶ | 50 | kJ/m² | ISO 179-1/1eU |
| Notched Charpy Impact Strength ⁶ | 2 | kJ/m² | ISO 179-1/1eA |
| Flexural Strength ¹² ⁶ | 135 | MPa | ISO 178 |
Table 2 of 4
15 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Melting Temperature (at 10°C/min) ¹ | 245 | °C | ISO 11357-1/-3 (Differential Scanning Calorimetry) |
| Thermal Conductivity (at 23°C) ¹ | 0.29 | W/(K.m) | — |
| Coefficient of Linear Thermal Expansion (at 23°C - 60°C) ¹ | 60 | μm/(m.K) | — |
| Coefficient of Linear Thermal Expansion (at 23°C - 100°C) ¹ | 80 | μm/(m.K) | — |
| Heat Deflection Temperature (Method A, 1.8 MPa) ¹ | 80 | °C | ISO 75-1/-2 |
| Continuous Allowable Service Temperature in Air (20 hrs) ³ ¹ | 100 | °C | — |
| Continuous Allowable Service Temperature in Air (20 hrs) ³ ¹ | 210 | °F | — |
| Service Temperature ⁴ ¹ | min. -20 | °C | — |
| Flammability (at 3 mm) ⁵ ¹ | HB | — | UL 94 |
| Flammability (Oxygen Index) ¹ | 25 | % | ISO 4589-1/-2 |
| Melting Temperature (at 50°F/min) ¹ | 491 | °F | ASTM D3418 (Differential Scanning Calorimetry) |
| Thermal Conductivity (at 73°F) ¹ | 2 | BTU in./(hr.ft².°F) | — |
Table 3 of 4
8 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Electric Strength ¹⁵ | 22 | kV/mm | IEC 60243-1 |
| Volume Resistivity | 1E+14 | Ohm.cm | IEC 62631-3-1 |
| Surface Resistivity | 1E+13 | Ohm/sq. | ANSI/ESD STM 11.11 |
| Dielectric Constant (at 1 MHz) | 3.4 | — | ASTM D150 |
| Dielectric Constant (at 1 MHz) | 3.2 | — | IEC 62631-2-1 |
| Dissipation Factor (at 1MHz) | 0.02 | — | ASTM D150 |
| Dissipation Factor (at 1MHz) | 0.014 | — | IEC 62631-2-1 |
| Electric Strength | 35 | Volts/mil | ASTM D149 |
Table 4 of 4
12 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Density | 1.39 | g/cm³ | ISO 1183-1 |
| Water Absorption (After 24h Immersion in Water of 23°C) ¹⁶ | 0.07 | % | ISO 62 |
| Water Absorption (at Saturation in Water of 23°C) | 0.5 | % | — |
| Wear Rate ¹⁸ | 3 | μm/km | ISO 7148-2 |
| Dynamic Coefficient of Friction ¹⁸ | 0.15 - 0.25 | — | ISO 7148-2 |
| Limiting PV (at 0.1 / 1 m/s Cylindrical Sleeve Bearings) | 0.15 | Mpa.m/s | — |
| Specific Gravity | 1.41 | — | ASTM D792 |
| Water Absorption (After 24h Immersion in Water of 73°F) ¹⁷ | 0.07 | % | ASTM D570 |
| Water Absorption (at Saturation in Water of 73°F) ¹⁷ | 0.9 | % | ASTM D570 |
| Wear Rate ¹⁹ | 60 | in³.min/ft.lbs.hrX10⁻¹⁰ | QTM 55010 |
| Dynamic Coefficient of Friction ²⁰ | 0.2 | — | QTM 55007 |
| Limiting PV (at 100 FPM) ²¹ | 2800 | ft.lbs/in².min | QTM 55007 |
