Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Materials Features
- Product Highlights
- Stock shapes made from unfilled ULTEM™ PEI resin, with outstanding mechanical, thermal, and electrical performance, plus very good chemical and hydrolysis resistance.
- Pre-assessed for biocompatibility on both resin and shape for up to 24 hours contact with body tissue according to USP VI and ISO 10993, as well as wetted contact in bioprocessing.
- Excellent sterilization resistance via steam, dry heat, Ethylene Oxide, plasma, and gamma or x-ray irradiation
- Excellent resistance to hydrolysis and chemicals
- Excellent dimensional stability
Applications & Uses
- Applications
- Plastics & Elastomers End Uses
- Plastics & Elastomers Processing Methods
- Recommended Applications
- Those in which the duration of contact with human body tissue is limited up to 24 hours*, as well as wetted contact in bioprocessing.
- This includes: endoscopy/laparoscopy, dental and surgical handles and tools.
Properties
- Flame Rating
- Odor
- Odorless
- Insoluble in
- Water
- Mechanical Properties
- Typical Properties
- Thermal Properties
- Electrical Properties
- Note
Handling (Machining) :
- During machining of the semi-finished products, evacuate swarf to prevent slipping or tripping hazard and observe the maximum allowable concentration of dust and
- formaldehyde levels on the workplace which apply in your country.
- Wear safety goggles during machining.
Storage:
- The products shall be stored indoors in a normal environment (air at 10 - 30°C / 30 - 70% RH) and kept away from any source of degradation such as sunlight, UV-lamps, chemicals (direct or indirect contact), ionizing radiation, flames, etc.
- Dimensional changes (camber, warpage, shrinkage …) of the products as well as slight color shifts of the external surfaces can occur with time.
- The latter does generally not pose a problem in case of semi-finished products since the surface-layer is mostly removed anyway upon machining them into finished parts.
Safety measures:
- Standard industrial safety recommendations shall be observed.
- Temperatures above the melting temperature shall be avoided.
| Value | Units | Test Method / Conditions | |
| Tensile Strength ⁶ | 129.0 | MPa | ISO 527-1/-2 ⁷ |
| Tensile Strain (elongation, at yield) ⁶ | 7.0 | % | ISO 527-1/-2 ⁷ |
| Tensile Strain (elongation, at break) ⁶ | 13.0 | % | ISO 527-1/-2 ⁷ |
| Tensile Modulus of Elasticity ⁶ | 3500.0 | MPa | ISO 527-1/-2 ⁹ |
| Shear Strength ⁶ | 97.0 | psi | ASTM D732 |
| Compressive Stress (at 1% nominal strain) ⁶ | 31.0 | MPa | ISO 604 ¹⁰ |
| Compressive Stress (at 2% nominal strain) ⁶ | 61.0 | MPa | ISO 604 ¹⁰ |
| Compressive Stress (at 5% nominal strain) ⁶ | 137.0 | MPa | ISO 604 ¹⁰ |
| Compressive Strength ⁶ | 22000.0 | psi | ASTM D695 ¹¹ |
| Charpy Impact Strength - Unnotched ⁶ | no break | kJ/m² | ISO 179-1/1eU |
| Charpy Impact Strength - Notched ⁶ | 3.5 | kJ/m² | ISO 179-1/1eA |
| Izod Impact Notched ⁶ | 0.5 | ft.lb./in | ASTM D256 |
| Flexural Strength ⁶ | 167.0 | MPa | ISO 178 ¹² |
| Flexural Modulus of Elasticity ⁶ | 500.0 | ksi | ASTM D790 |
| Rockwell M Hardness ⁶ ¹⁴ | 115.0 | — | ISO 2039-2 |
| Rockwell R Hardness ⁶ ¹⁴ | 125.0 | — | ASTM 2240 |
| Value | Units | Test Method / Conditions | |
| Thermal Decomposition | min. 530 | °C | — |
| Self Ignition Temperature | 350.0 | °C | ASTM D 1929 |
| Density | 1.27 | g/cm³ | ISO 1183-1 |
| Specific Gravity | 1.28 | — | ASTM D792 |
| Water Absorption (after 24h immersion in water of 23 °C) | 0.25 | % | ASTM D570 ¹⁷ |
| Water Absorption (at saturation in water of 23 °C) | 1.3 | % | ASTM D570 ¹⁷ |
| Wear Rate | 1325.0 | μm/km | ISO 7148-2 ¹⁸ |
| Dynamic Coefficient of Friction (-) | 0.3 - 0.5 | — | ISO 7148-2 ¹⁸ |
| Limiting PV (at 100 FPM) | 1875.0 | ft.lbs/in².min | QTM 55007 ²¹ |
| Value | Units | Test Method / Conditions | |
| Glass Transition Temperature (DMA - Tan δ) ¹ ² | 215.0 | °C | — |
| Thermal Conductivity (at 23°C) ¹ | 0.24 | W/(K.m) | — |
| Coefficient of Linear Thermal Expansion (at -40 to 150 °C) ¹ | 31.0 | μin./in./°F | ASTM E-831 (TMA) |
| Coefficient of Linear Thermal Expansion (at 23 to 60°C) ¹ | 50.0 | μm/(m.K) | — |
| Coefficient of Linear Thermal Expansion (at 23 to 100°C) ¹ | 50.0 | μm/(m.K) | — |
| Coefficient of Linear Thermal Expansion (above 150°C) ¹ | 60.0 | μm/(m.K) | — |
| Heat Deflection Temperature (method A, 1.8 MPa) ¹ | 195.0 | °C | ISO 75-1/-2 |
| Continuous Allowable Service Temperature in Air (for 20 hrs) ¹ ³ | 170.0 | °C | — |
| Service Temperature ¹ ⁴ | -50.0 | °C | — |
| Flammability UL 94 (3 mm) ¹ ⁵ | V - 0 | — | — |
| Flammability Oxygen Index ¹ | 47.0 | % | ISO 4589-1/-2 |
| Value | Units | Test Method / Conditions | |
| Electric Strength | 27.0 | kV/mm | IEC 60243-1 ¹⁵ |
| Volume Resistivity | 1 x 10¹³ | Ohm.cm | IEC 62631-3-1 |
| Surface Resistivity | 1 x 10¹² | Ohm/sq. | ANSI/ESD STM 11.11 |
| Dielectric Constant (at 1 MHz) | 3.0 | — | IEC 62631-2-1 |
| Dissipation Factor (at 1MHz) | 0.002 | — | IEC 62631-2-1 |
Regulatory & Compliance
Technical Details & Test Data
- Material Selection
Sterilization Resistance
Compatibility with some commonly used sterilization methods Ethylene
Oxide gasWet heat (steam)
121°C / 134°CDry heat
160°CPlasma Gamma
irradiationX-ray
irradiationDuratron® LSG PEI Good Very Good / Good Very Good Good Good Good Chemical Resistance
Weak (dilute) acids Strong acids Oxidising chemicals Weak (dilute) alkalis Strong alkalis Hot water (80°C) Steam Esters
(e.g. ethyl acetate)Ketones
(e.g. acetone)Aromatic hydrocarbons
(e.g. benzene, toluene)Aliphatic hydrocarbons
(e.g. hexane, octane)Duratron® LSG PEI Resistant - In general acceptable Service Life Non - Resistant Non - Resistant Resistant - In general acceptable Service Life Non - Resistant Resistant - In general acceptable Service Life Resistant - In general acceptable Service Life Partially resistant – Limited service life Non - Resistant Non - Resistant Resistant - In general acceptable Service Life X-ray Transparency
Transparency of the life science grades to high energy radiation (Measured at 23°C on 12 mm thick test plates, applying radiation with an energy level of 59keV)
Radiation Resistance
Resistance of the life science grades to gamma radiation
- Index 6 = 106Gy / 1MGy = 106Gy / 1 Gy = 100rad /
- 100rad = 1J/kg / 1J/kg = 6.24.1012MeV/kg
- X-rays energy ranging from 100eV to 100keV. Gamma radiation have energy greater than 100keV.
- The Radiation Index (RI) is defined as the logarith, base 10, of the absorbed dose in Mega grays at which the flexural stress at break or flexural strain at break of the tested material is reduced to 50% of its original value, under specified conditions of irradiation (the most radiation-sensitive of these two properties is chosen as the reference critical property).
Storage & Handling
- Storage and Handling Information
Handling (Machining) :
- During machining of the semi-finished products, evacuate swarf to prevent slipping or tripping hazard and observe the maximum allowable concentration of dust and
- formaldehyde levels on the workplace which apply in your country.
- Wear safety goggles during machining.
Storage:
- The products shall be stored indoors in a normal environment (air at 10 - 30°C / 30 - 70% RH) and kept away from any source of degradation such as sunlight, UV-lamps, chemicals (direct or indirect contact), ionising radiation, flames, etc.
- Dimensional changes (camber, warpage, shrinkage …) of the products as well as slight colour shifts of the external surfaces can occur with time.
- The latter does generally not pose a problem in case of semi-finished products since the surface-layer is mostly removed anyway upon machining them into finished parts.
Safety measures:
- Standard industrial safety recommendations shall be observed.
- Temperatures above the melting temperature shall be avoided.