GEHR PSU®
- Chemical Family
- Polysulfones
GEHR PSU® is amber-colored, transparent material belongs to the group of amorphous high-performance plastics. Polysulfone has a good heat deflection temperature and heat aging resistance (-100 °C to +160 °C). In addition, this material has a high hardness and strength, very good hydrolytic stability and high radiation resistance (permeable to microwaves up to 2.45 GHz). PSU also has high dimensional stability and resistance to β- and γ-, X-rays and infrared rays. However, PSU is not UV stable and notch sensitive.
Properties
- Physical Form
- Custom, Rods
- Custom
- Rods
Other characteristics
- Brand
- GEHR PSU
- Color
- Amber, Black
- Amber
- Black
- Density
- 1240.0 - 1240.0 kg/m³
- Features
Amorphous, Chemical Resistant, Dimensional Stability, Excellent Performance, Excellent Rigidity, Excellent Transparency Properties, Good Environmental Stress Crack Resistance (ESCR), Good Impact Strength, Good Sterilizability, Heat Aging Resistant, High Hardness, High Heat Deflection Temperature, High Hydrolytic Stability, High Strength, Radiation Resistant
- Polymer Name
- Polysulfone (PSU)
- Odor
- Odorless
- Markets
- Agriculture & Feed
- 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; High impact strength (also at low temperatures); Very good dimensional stability; High chemical resistance; High resistance to β-, γ-, x- and infrared radiation; High permeability of microwaves; Self-extinguishing; Good to sterilize; Mediocre resistance to stress crack; Not weather resistant
- 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
Technical data
Table 1 of 6
7 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Tensile Strength at Yield | 89 | MPa | ISO 527 |
| Elongation at Yield (S) | 5 | % | ISO 527 |
| Elongation at Break (R) | min. 10 | % | ISO 527 |
| Impact Strength (an) | 170 | kJ/m2 | ISO 179 |
| Ball Indentation (Rockwell Hardness) | 167 | MPa | ISO 2039 |
| Hardness | 87 | Shore D | ISO 868 |
| Modulus of elasticity (Et) | 2680 | MPa | ISO 527 |
Table 2 of 6
5 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Specific Gravity | 1.24 | — | ISO 1183 |
| Water Absorption | 0.8 | % | ISO 62 |
| Humidity Absorption | 0.3 | % | ISO 62 |
| Maximum Permissible Service Temperature | 160 | °C | UL746B |
| Lower Permissible Service Temperature | -100 | °C | UL746B |
Table 3 of 6
7 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Heat Deflection Temperature (HDT/B) | 240 | °C | ISO 75 |
| Heat Deflection Temperature (HDT/B) | 181 | °C | ISO 75 |
| Heat Deflection Temperature (HDT/A) | 169 | °C | ISO 75 |
| Coefficient of Linear Thermal Expansion | 0.55 | K-1.10-4 | ISO 11359 |
| Thermal Conductivity (20°C) | 0.25 | W/(m.K) | ISO 22007-4 |
| Glass Transition Temperature (Tg) | 188 | °C | ISO 3146 |
| Melting Temperature (Tm) | 188 | °C | ISO 3146 |
Table 4 of 6
3 rows| Characteristic | Value | Unit |
|---|---|---|
| Density | 1.24 | g/cm³ |
| Thermal Decomposition | min. 400 | °C |
| Ignition Temperature | 475 | °C |
Table 5 of 6
6 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) | 3.1 | — | IEC 60250 |
| Dielectric Loss Factor (1 MHz) | 55 | — | IEC 60250 |
| Dielectric Strength | 42 | kV/mm | IEC 60243-1 |
| Tracking Resistance | CTI 125 | V | IEC 60112 |
Table 6 of 6
4 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Bondability | Yes | — | — |
| Physiological Indifference (FDA) | Yes | — | — |
| Flammability | V-0 7) | — | UL 94 |
| Limiting Oxygen Index (LOI, 9) | 30 | % | ASTM D2863 |
