Materials and Tools
Ultem®
Ultem® (polyetherimide) is an amorphous polymer with a high temperature resistance and excellent chemical compatibility. Upchurch Scientific extrudes tubing from this material, that is transparent and exhibits good kind resistance. Ultem meets the requirements for ISO10993, FDA and USP Class VI certification.
| Temperature Range | up to 125 °C |
|---|---|
| Thread Strength | N/A |
| Oxygen Permeability | 37 cc / 100in2 * 24h * atm / mil @ 25 °C |
| pH Range | 1 - 10 |
| Sterilization Techniques | Gamma radiation, ethylene oxide, dry heat |
| Autoclavable? | Y |
Ultem Extended Properties
| General | Comments | Units | ||
|---|---|---|---|---|
| Density | ASTM D792 | g/cc | 1.28 | |
| Melt Flow | 1.05kg/190 °C | g/10 min | 9 | |
| Water Absorption | 24 hour | ASTM D570 | % | 0.25 |
| Mold Shrinkage | % | 0.5 | ||
| Water Absorption at Saturation | Immersion | ASTM D570/ ISO 62 | % | 1.25 |
| Hardness, Rockwell M | ASTM D785 | - | 112 | |
| Hardness, Rockwell R | ASTM D785 | - | 125 | |
| Mechanical | Comments | Units | ||
| Tensile Strength | Ultimate | ASTM D638 | MPa(psi) | 105(15,228) |
| Elongation | Break | ASTM D638 | % | 80 |
| Modulus of Elasticity | ASTM D638 | GPa(ksi) | 2.9(420) | |
| Flexural Modulus | ASTM D790 | GPa(ksi) | 3.3(479) | |
| Flexural Yield Strength | ASTM D790 | MPa(psi) | 150(21,700) | |
| Izod Impact Strength | Notched, at 23 °C | ASTM D256 | J/cm | 0.53 |
| Izod Impact Strength | Unnotched, at 23 °C | ASTM D256 | J/cm | 1.34 |
| Compressive Yield Strength | ASTM D695 | MPa(psi) | 151(22,000) | |
| Shear Strength | ASTM D732 | MPa(psi) | 103(15,000) | |
| Fatigue Strength | Flexural fatigue endurance limit, 50% RH, | ASTM D672 | MPa(psi) | 32(4,641) |
| Fatigue Strength | Flexural fatigue endurance limit, 50% RH, 1E+6 cycles | ASTM D672 | MPa(psi) | 32(4,641) |
| Poissons Ratio | - | 0.35 | ||
| Coefficient of Friction | Dynamic vs. carbon steel, 50mm/s (2in/s) | 0.42 | ||
| Thermal | Comments | Units | ||
| Coefficient of Thermal Expansion | linear 20 °C | µin/in- °F | 31 | |
| Deflection Temperature | at 1.8 MPa | ASTM D648 | °F(°C) | 392(200) |
| Melting Point | ASTM D3418 | °F(°C) | 639-798 (337-426) |
|
| Thermal Conductivity | - | BTU-in/hr-ft2- °F (W/m-K) | 0.90(0.22) | |
| Flammability Rating, UL94 | (5=V-0;4=V-1;3=V-2;1=HB) | UL94 | B | 1(HB) |
| Electrical | Comments | Units | ||
| Electrical Resistivity | ASTM D257 | ohm-cm | 1E+15 | |
| Dielectric Constant | at 1MHz | ASTM D150 | - | 3.7 |
| Dielectric Strength, kV/mm | 2.3mm (90 mils); Short Time | ASTM D149 | 500 kV/in | 19.7 |
| Dissipation Factor | at 1 MHz | ASTM D150 | - | 0.005 |
| Arc Resistance | ASTM D495 | sec | 220 |