GEHR PPS®
- Chemical Family
- Polyphenylene Sulfide (PPS)
GEHR PPS® is continuous operating temperature of this high-performance plastic is approximately +230 °C. It has very high mechanical performance combined with excellent thermal and chemical resistance as well as high dimensional stability and creep resistance. The LOI of this material is among the highest among polymers. The excellent hardness and stiffness are further characteristics of PPS. It closes the gap between semi-crystalline, engineering plastics and PEEK through its strength and economic efficiency.
Properties
- Physical Form
- Custom, Rods, Sheets
- Custom
- Rods
- Sheets
Other characteristics
- Brand
- GEHR PPS
- Color
- Black
- Density
- 1340.0 - 1650.0 kg/m³
- Features
Chemical Resistant, Dimensional Stability, Excellent Performance, Good Thermal Stability, Good Weather Stability, High Hardness, High Hydrolysis Resistance, High Rigidity, High Strength, High Temperature Insulation Properties
- Polymer Name
- Polyphenylene Sulfide (PPS)
- Odor
- Odorless
- Markets
- Automotive & Transportation
- Building & Construction
- Electrical & Electronics
- 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 ). Free glass fiber or dust may cause irritations. Little or no exposure based on inhaling fibers are expected.
- Properties
- Very high strength and rigidity
- High hardness
- High thermostability
- High dimensional stability
- Very high chemical resistance
- Very good insulating properties
- High weather resistance
- High resistance to hydrolysis
- 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
- Chemical Resistant
- Dimensional Stability
- Excellent Performance
- Good Thermal Stability
- Good Weather Stability
- High Hardness
- High Hydrolysis Resistance
- High Rigidity
- Certifications and Compliance
- UL 94
Technical data
Table 1 of 6
9 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Tensile Strength at Yield | 94 | MPa | ISO 527 |
| Tensile Strength at Break | 88 | MPa | ISO 527 |
| Elongation at Break (R) | 8 | % | ISO 527 |
| Impact Strength (an) | 28 | kJ/m2 | ISO 179 |
| Ball Indentation (Rockwell Hardness) | 246 (M 90) | MPa | ISO 2039 |
| Hardness | 88 | Shore D | ISO 868 |
| Flexural Strength (B 3,5 %) | 170 | MPa | ISO 178 |
| Flexural Strength (B 3,5 %) | 143 | MPa | ISO 178 |
| Modulus of elasticity (Et) | 3700 | MPa | ISO 527 |
Table 2 of 6
4 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Specific Gravity | 1.35 | — | ISO 1183 |
| Water Absorption | 0.02 | % | ISO 62 |
| Humidity Absorption | 0.01 | % | ISO 62 |
| Maximum Permissible Service Temperature | 230 | °C | UL746B |
Table 3 of 6
5 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Heat Deflection Temperature (HDT/A) | 115 | °C | ISO 75 |
| Coefficient of Linear Thermal Expansion | 0.58 | K-1.10-4 | ISO 11359 |
| Thermal Conductivity (20°C) | 0.25 | W/(m.K) | ISO 22007-4 |
| Glass Transition Temperature (Tg) | 97 | °C | ISO 3146 |
| Melting Temperature (Tm) | 280 | °C | ISO 3146 |
Table 4 of 6
4 rows| Characteristic | Value | Unit |
|---|---|---|
| Density | 1.34 - 1.65 | g/cm³ |
| Melting Temperature | 280 | °C |
| Thermal Decomposition | min. 370 | °C |
| Ignition Temperature | min. 480 | °C |
Table 5 of 6
5 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Volume Resistivity | min. 10^11 | Ω.cm | IEC 60093 |
| Surface Resistivity (Ro) | min. 10^13 | Ω | IEC 60093 |
| Dielectric Constant (1MHz) | 3.2 | — | IEC 60250 |
| Dielectric Strength | 30 | 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 (FDA) | Yes | — | — |
| Flammability | V-0 | — | UL 94 |
| Limiting Oxygen Index (LOI, 9) | 47 | % | ASTM D2863 |
| UV Stabilisation (6, 9) | Limited | — | — |
