GEHR PEI®
GEHR PEI® has a high mechanical strength in connection with a good chemical and heat resistance (operating temperature up to +170 °C), good dimensional stability and creep resistance. lts unique torque strength permits the economical substitution of machined fabricated small parts from steel.
Properties
- Physical Form
- Custom, Rods, Sheets
- Custom
- Rods
- Sheets
Other characteristics
- Brand
- GEHR PEI
- Color
- Black
- Density
- 1270.0 - 1270.0 kg/m³
- Features
Chemical Resistant, Creep Resistant, Dimensional Stability, Good Environmental Stress Crack Resistance (ESCR), Good Thermal Stability, Good Weather Stability, Heat Resistance, High Hardness, High Rigidity, High Strength
- Polymer Name
- Polyether Imide (PEI)
- Odor
- Odorless
- Markets
- Agriculture & Feed
- Automotive & Transportation
- Building & Construction
- Consumer Goods
- 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 ).
- Properties
- Very high strength and rigidity
- High creep resistance
- High torque strength and hardness
- High thermostability
- High weather resistance
- High radiation resistance against γ-rays
- Self-extinguishing
- Limited resistance to stress cracks
- 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
4 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Specific Gravity | 1.27 | — | ISO 1183 |
| Water Absorption | 1.3 | % | ISO 62 |
| Humidity Absorption | 0.25 | % | ISO 62 |
| Maximum Permissible Service Temperature | 170 | °C | UL746B |
Table 2 of 6
9 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Tensile Strength at Yield | 110 | MPa | ISO 527 |
| Elongation at Yield (S) | 6 | % | ISO 527 |
| Tensile Strength at Break | 85 | MPa | ISO 527 |
| Elongation at Break (R) | min. 30 | % | ISO 527 |
| Impact Strength (an) | 115 | kJ/m2 | ISO 179 |
| Ball Indentation (Rockwell Hardness) | 220 (M 109) | MPa | ISO 2039 |
| Hardness | 87 | Shore D | ISO 868 |
| Flexural Strength (B 3,5 %) | 165 | MPa | ISO 178 |
| Modulus of elasticity (Et) | 3450 | MPa | ISO 527 |
Table 3 of 6
9 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Vicat Softening Point (VST/B/50) | 250 | °C | ISO 306 |
| Vicat Softening Point (VST/B/50) | 211 | °C | ISO 306 |
| Vicat Softening Point (VST/A/50) | 215 | °C | ISO 306 |
| Heat Deflection Temperature (HDT/B) | 200 | °C | ISO 75 |
| Heat Deflection Temperature (HDT/A) | 190 | °C | ISO 75 |
| Coefficient of Linear Thermal Expansion | 0.56 | K-1.10-4 | ISO 11359 |
| Thermal Conductivity (20°C) | 0.24 | W/(m.K) | ISO 22007-4 |
| Glass Transition Temperature (Tg) | 217 | °C | ISO 3146 |
| Melting Temperature (Tm) | 217 | °C | ISO 3146 |
Table 4 of 6
3 rows| Characteristic | Value | Unit |
|---|---|---|
| Density | 1.27 | g/cm³ |
| Thermal Decomposition | min. 480 | °C |
| Ignition Temperature | min. 535 | °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) | 2.9 | — | IEC 60250 |
| Dielectric Loss Factor (1 MHz) | 13 | — | IEC 60250 |
| Dielectric Strength | 33 | 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 7) | — | UL 94 |
| Limiting Oxygen Index (LOI, 9) | 47 | % | ASTM D2863 |
| UV Stabilisation (6, 9) | Yes | — | — |
