GEHR PPSU®
- Chemical Family
- Polyphenylene Sulfide (PPS)
GEHR PPSU® is an amorphous material, with improved impact and hydrolysis resistance compared to PSU. This amber-colored, transparent material is usually used in a black color, which is why we only offer it in this color version so far. The usual operating temperature is approx. +170 °C. The extremely high notch impact strength remains also after a heat aging.
Properties
- Physical Form
- Custom, Rods
- Custom
- Rods
Product families
- Consumer Goods — Housewares
- Other Automotive Applications
- Pipes & Plumbing
- Equipment & Parts
- Medical Devices & Assemblies
- Other Medical Applications
- Other Parts & Components
- Food & Beverage Manufacturing
Other characteristics
- Brand
- GEHR PPSU
- Color
- Amber, Black
- Amber
- Black
- Density
- 1290.0 - 1290.0 kg/m³
- Features
Amorphous, Chemical Resistant, Dimensional Stability, Excellent Hydrolysis Resistance, Good Impact Strength, Good Sterilizability, High Impact Resistance, High Rigidity, High Strength, Radiation Resistant
- Polymer Name
- Polyphenylene Sulfide (PPS)
- Odor
- Odorless
- Markets
- Automotive & Transportation
- Building & Construction
- Consumer Goods
- Electrical & Electronics
- Food & Nutrition
- Healthcare & Pharma
- Industrial
- Storage
The products shall be stored indoor to keep away from any source of degradation such as sunlight, UV-jets, ionizing radiation, chemicals.
- Machining
The product can be machined with standard machinery and tools. Before machining the product should be stored at room temperature 24 h. Evacuate swarf to prevent slipping or tripping. Observe the maximum allowable concentration of dust and formaldehyd levels on the working area which apply in your country. Wear safety goggles during machining. General dust limit value: Respirable dust (6 mg/m3); Inhalable dust (10 mg/m3 ).
- Properties
High strength and rigidity; Very high impact strength (also at low temperatures); Very good dimensional stability; Very high chemical resistance; High resistance to many kinds of radiation; Very good sterilizing capability; Lower chemical resistance than comparable semicrystalline materials
- Flame Rating
- UL 94 V0
- Insoluble In
- Water
- Technology
- Plastics
- Safety Measures
The general industrial safety measures should be considered. A thermal damage during machining should be avoided.
- Product Families
- Plastics — Parts, Shapes & Films
- Form and Condition
- Rods. Sheets / Solid
- Material Features
- Amorphous
- Chemical Resistant
- Dimensional Stability
- Excellent Hydrolysis Resistance
- Good Impact Strength
- Good Sterilizability
- High Impact Resistance
- High Rigidity
- Fire-Fighting Measures
Suitable extinguishing agents; Water, foam, dry chemical, carbon dioxide (CO2).; Potential combustion products; Carbon dioxide (CO2), carbon monoxide (CO). Formation of further decomposition and oxidation products depend upon the fire conditions. Under special fire conditions traces of other toxic substances are possible.; Special protective equipment; Wear a self-contained breathing apparatus. If exposed to combustion fumes bring the victim into fresh air.; Further information; Dispose of fire debris and contaminated extinguishing water in accordance with official regulations..
- Certifications and Compliance
- UL 94
- Plastics and Elastomers End Uses
- Medical Devices
- Medical/Healthcare Applications
- Microwave Cookware
- Pump Parts
- Plastics and Elastomers Processing Methods
- Extrusion
Technical data
Table 1 of 6
5 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Specific Gravity | 1.31 | — | ISO 1183 |
| Water Absorption | 0.4 | % | ISO 62 |
| Humidity Absorption | 0.1 | % | ISO 62 |
| Maximum Permissible Service Temperature | 170 | °C | UL746B |
| Lower Permissible Service Temperature | -50 | °C | UL746B |
Table 2 of 6
8 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Tensile Strength at Yield | 80 | MPa | ISO 527 |
| Elongation at Yield (S) | 7 | % | ISO 527 |
| Elongation at Break (R) | min. 50 | % | ISO 527 |
| Notch impact Strength (ak) | 13 | kJ/m2 | ISO 179 |
| Ball Indentation (Rockwell Hardness) | 141 | MPa | ISO 2039 |
| Hardness | 86 | Shore D | ISO 868 |
| Flexural Strength (B 3,5 %) | 105 | MPa | ISO 178 |
| Modulus of elasticity (Et) | 2350 | MPa | ISO 527 |
Table 3 of 6
6 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Heat Deflection Temperature (HDT/B) | 214 | °C | ISO 75 |
| Heat Deflection Temperature (HDT/A) | 207 | °C | ISO 75 |
| Coefficient of Linear Thermal Expansion | 0.56 | K-1.10-4 | ISO 11359 |
| Thermal Conductivity (20°C) | 0.35 | W/(m.K) | ISO 22007-4 |
| Glass Transition Temperature (Tg) | 220 | °C | ISO 3146 |
| Melting Temperature (Tm) | 220 | °C | ISO 3146 |
Table 4 of 6
3 rows| Characteristic | Value | Unit |
|---|---|---|
| Density | 1.29 | g/cm³ |
| Thermal Decomposition | min. 450 | °C |
| Ignition Temperature | min. 550 | °C |
Table 5 of 6
5 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Volume Resistivity | min. 10^13 | Ω.cm | IEC 60093 |
| Surface Resistivity (Ro) | min. 10^13 | Ω | IEC 60093 |
| Dielectric Constant (1MHz) | 3.4 | — | IEC 60250 |
| Dielectric Strength | 15 | kV/mm | IEC 60243-1 |
| Tracking Resistance | CTI 125 | V | IEC 60112 |
Table 6 of 6
5 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Bondability | Yes | — | — |
| Physiological Indifference (EEC) | Yes | — | — |
| Flammability | V-0 | — | UL 94 |
| Limiting Oxygen Index (LOI, 9) | 38 | % | ASTM D2863 |
| UV Stabilisation (6, 9) | Yes | — | — |
