Solvay KetaSpire® KT-880 is a high-purity, ultra-high-flow PEEK resin. Engineered for thin-walled precision injection molding, it offers exceptional chemical resistance, fatigue strength, and dimensional stability for medical, semiconductor, and industrial applications.
| Manufacturer | Solvay |
|---|---|
| Density | 1.30 g/cm³ |
| MFR | 36 g/10min |
| Tensile Strength at Yield | 102 MPa |
| Elongation at Yield | 5.2 % |
Note: See the product description for additional technical specifications
KetaSpire® KT-880 is an unreinforced, high-flow polyetheretherketone (PEEK) resin developed and manufactured by Solvay. This material appears as light beige to natural translucent cylindrical pellets and is classified as a high-purity specialty engineering plastic. Its core characteristic is a melt flow rate (MFR) as high as 36 g/10min, combined with the inherent high thermal stability and chemical resistance of PEEK. KT-880 is specifically designed for thin-walled, precision injection molding processes with complex geometries and is widely used in industrial sectors that have stringent requirements for material purity, fatigue resistance, and dimensional stability.
| Physical Properties | Test Conditions | Typical Value | Test Standard |
| Density | — | 1.30 g/cm³ | ASTM D792 |
| Melt Flow Rate | 400 °C, 2.16 kg | 36 g/10min | ASTM D1238 |
| Mold Shrinkage, Parallel | 127 x 12.7 x 3.18mm | 1.4-1.6 % | ASTM D955 |
| Mold Shrinkage, Transverse | 127 x 12.7 x 3.18mm | 1.5-1.7 % | ASTM D955 |
| Water Absorption | 24 hr | 0.10 % | ASTM D570 |
| Rockwell Hardness, M | — | 102 | ASTM D785 |
| Melt Viscosity | 400 °C, 1.0e+3 sec⁻¹ | 150 Pa·s | ASTM D3835 |
| Mechanical Properties | Test Conditions | Typical Value | Test Standard |
|
Tensile Modulus
|
1 mm/min | 3700 MPa | ASTM D638 |
| — | 4000 MPa | ISO 527-2 | |
| Tensile Strength, Yield | — | 102 MPa | ISO 527-2 |
| Tensile Stress | 51 mm/min | 100 MPa | ASTM D638 |
|
Tensile Strain, Yield
|
50 mm/min | 5.2 % | ASTM D638 |
| — | 5.0 % | ISO 527-2 | |
|
Tensile Strain, Break
|
50 mm/min | 10-20 % | ASTM D638 |
| — | 10-20 % | ISO 527-2 | |
|
Flexural Modulus
|
— | 3800 MPa | ASTM D790 |
| — | 3900 MPa | ISO 178 | |
|
Flexural Strength
|
— | 153 MPa | ASTM D790 |
| — | 134 MPa | ISO 178 | |
| Compressive Strength | — | 123 MPa | ASTM D695 |
| Shear Strength | — | 95.1 MPa | ASTM D732 |
| Poisson’s Ratio | — | 0.37 | ASTM E132 |
|
Izod Impact Strength, Notched
|
— | 53 J/m | ASTM D256 |
| — | 4.9 kJ/m² | ISO 180 | |
| Izod Impact Strength, Unnotched | — | No Break | ASTM D4812 |
| Thermal Properties | Test Conditions | Typical Value | Test Standard |
| Heat Deflection Temperature | 1.8 MPa | 160 °C | ASTM D648 |
| Glass Transition Temperature (Tg) | — | 147 °C | ASTM D3418 |
| Melting Temperature, Peak | — | 343 °C | ASTM D3418 |
| CTE, Parallel | -50 – 50 °C | 5.0E-5 cm/cm/°C | ASTM E831 |
|
Specific Heat
|
50 °C | 1330 J/kg/°C | DSC |
| 200 °C | 1930 J/kg/°C | DSC | |
| Thermal Conductivity | — | 0.25 W/m·K | ASTM E1530 |
| Flammability Rating | 3 mm | V-0 | UL 94 |
| Electrical Properties | Test Conditions | Typical Value | Test Standard |
| Surface Resistivity | — | > 1.9E+17 ohms | ASTM D257 |
| Volume Resistivity | — | 3.8E+17 ohms·cm | ASTM D257 |
| Dielectric Strength | 3 mm | 15 kV/mm | ASTM D149 |
|
Dielectric Constant
|
60 Hz | 3.1 | ASTM D150 |
| 1.0e+3 Hz | 3.01 | ASTM D150 | |
| 1.0e+6 Hz | 3.07 | ASTM D150 | |
|
Dissipation Factor
|
60 Hz | 1.00E-03 | ASTM D150 |
| 1.0e+3 Hz | 1.00E-03 | ASTM D150 | |
| 1.0e+6 Hz | 3.00E-03 | ASTM D150 |
The technical data sheet (TDS) of KetaSpire® KT-880 material from Solvay corporation, if there are differences, please refer to the official website of Solvay.
Superior High Flowability: A melt flow rate of 36 g/10min provides the material with excellent mold-filling capability, allowing it to perfectly replicate the intricate details of micro-connectors, thin-walled medical forceps, and other complex molds.
Excellent Fatigue and Wear Resistance: Demonstrates industry-leading fatigue resistance under alternating loads. Combined with a low coefficient of friction, it is suitable for gears, bearings, and other long-term dynamic components.
Broad Chemical and Hydrolytic Resistance: Exhibits strong resistance to most organic chemicals, acids, bases, and high-temperature steam, enabling long-term service in chemical processing and high-temperature aqueous environments.
High Purity and Low Outgassing: Strict control over ionic content ensures that no contaminants are introduced in semiconductor manufacturing or medical sterilization environments, guaranteeing process cleanliness.
Excellent Dimensional Stability: Low water absorption (0.10%) and a moderate coefficient of thermal expansion ensure dimensional precision of parts under humidity fluctuations or high-temperature environments.
Medical & Life Sciences: Surgical instrument handles, minimally invasive surgical tools, dental equipment components, and trays suitable for repeated steam sterilization (autoclaving).
Semiconductor & Electronics: Wafer carriers, CMP retaining rings, test sockets, and high-frequency connectors, leveraging its high purity and excellent dielectric properties.
Transportation: Non-load-bearing interior parts for aerospace, automotive transmission sensor housings, and high-temperature wire harness connectors.
Industrial & Energy: Seals for chemical pumps and valves, components for oil and gas downhole tools, and high-precision flow path plates for analytical instruments.
Q1: Does KT-880 require drying before injection molding? What is the recommended process?
A1: Yes. Although PEEK has low water absorption, it is strongly recommended to dry the material before processing to prevent molecular chain degradation caused by high-temperature hydrolysis. The recommended process is drying at 150°C for 3-4 hours to ensure the moisture content is below 0.02%.
Q2: How should one choose between KT-880 and a standard-viscosity PEEK (such as KT-820)?
A2: KT-880 has a significantly higher melt flow rate than KT-820, making it more suitable for precision parts with wall thicknesses less than 1mm or those requiring a very high flow length-to-thickness ratio. If the application involves thick-walled structures or requires extreme mechanical strength, and mold filling is not difficult, a standard-viscosity grade may provide higher melt strength.
Q3: Does this material support compliance certifications for food contact or medical implantation levels?
A3: KT-880 complies with RoHS and REACH standards and holds UL 94 V-0 flammability certification. For medical applications, this series offers specific derivative grades that comply with ISO 10993 biocompatibility and USP Class VI standards. The specific certification status should be confirmed with the manufacturer based on the end-use application.
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