Bespel® Round Bar (Grade 9 φ6.3 to φ152.4)

basic information

【Material】PI (Polyimide) Vespel® / Manufactured by DuPont 【Shape】Round rod φ6.3 to φ152.4 (varies by grade) 【SP-1 Reference Properties】Specific gravity 1.43 / Tensile strength 86.2 MPa (23°C) / Continuous use temperature 300°C; Intermittent 480°C 【By Grade】 SP-1 Brown: Unfilled, electrical insulation SP-21 Black: 15% Graphite, low friction SP-22 Black: 40% Graphite, low thermal expansion SP-211 Black: 15% Graphite + 10% PTFE, even lower friction SP-3 Dark brown: 15% Molybdenum disulfide, vacuum/dry environment SCP-5000 Brown / SCP-5009, 5050, 50094 Black: Plasma resistant, chemical resistant *The values are for reference only. Please check the property table PDF for each grade for accurate values. Vespel® is a registered trademark of DuPont.

Price information

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Delivery Time

P3

※In-stock items will be shipped within 4 business days after the order is confirmed.

Applications/Examples of results

- Semiconductor manufacturing equipment (components for plasma environments, insulating components, wafer transport components) - Vacuum equipment (sliding parts requiring low outgassing: SP-3) - High-temperature sliding parts (non-lubricated bearings, bushes, seals: SP-21/SP-211) - Precision equipment (parts requiring dimensional stability under temperature changes: SP-22) - Electrical insulating components (areas maintaining insulation at high temperatures: SP-1) [Selection Guide] For electrical insulation, use SP-1; for sliding and low friction, use SP-21 (for even lower friction, use SP-211); for minimizing thermal expansion, use SP-22; for vacuum environments, use SP-3; for plasma and chemical environments, the SCP-5000 series is recommended. [Note] If strength is required below 260°C, consider PEEK, which is advantageous in terms of cost and machinability.

Detailed information

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  Bespel® SP-1 (Brown) unfilled basic grade It has excellent wear resistance and electrical insulation properties, and can be used at extremely low temperatures up to 300°C (intermittently up to 480°C). This is the grade with the highest elongation rate among Bespel products. Suitable for insulating parts and general high-temperature components. Round rods φ6.3 to φ152.4.

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  Bespel® SP-21 (black) graphite reinforced low friction grade. 15% graphite filled. It is a low wear and low friction grade suitable for bearings, thrust washers, and dynamic seals. For bearings, bushes, and sliding parts under high temperatures. Round bars φ6.3 to φ152.4.

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  Bespel® SP-22 (black) low thermal expansion grade. 40% filled with graphite. It has an extremely low thermal expansion rate, with a thermal expansion coefficient close to that of aluminum, making it a low wear and low friction grade. Suitable for precision parts in environments with temperature variations. Round rods φ6.3 to φ152.4.

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  Bespel® SP-211 (black) low friction grade. Filled with 15% graphite and 10% PTFE. It has an even lower friction coefficient than SP-21, providing low friction over a wide range of conditions and low wear up to 300°C. Suitable for sliding parts without lubrication. Round rods φ6.3 to φ152.4.

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  Bespel® SP-3 (dark brown) grade for vacuum and dry environments. 15% filled with molybdenum disulfide. Suppresses gas release in vacuum and dry environments, making it suitable for sliding applications. For vacuum equipment, space applications, and sliding parts in dry environments. Round bars φ6.3 to φ152.4.

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  Bespel® SCP-5000 (Brown) Plasma-Resistant and Chemical-Resistant Grade Unfilled high-grade polyimide. With high elastic modulus and high surface hardness, it excels in strength and rigidity at high temperatures. Superior plasma resistance and chemical resistance compared to SP-1, suitable for semiconductor manufacturing equipment. Round rods φ6.3 to φ70.

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  Bespel (R) SCP-50094 (Black) SCP-5000 Series Grade This grade is designed for applications requiring high toughness and chemical resistance. The SCP series excels in plasma resistance and chemical resistance compared to SP-1. Round bars φ6.3 to φ63.5.

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  Bespel (R) SCP-5009 (Black) SCP-5000 Series Grade The SCP series excels in plasma resistance and chemical resistance compared to SP-1, and is used in environments exposed to plasma and chemicals, such as semiconductor manufacturing equipment. Round bar φ6.3 to φ63.5.

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  Bespel (R) SCP-5050 (Black) SCP-5000 Series Grade The SCP series excels in plasma resistance and chemical resistance compared to SP-1, and is used in environments exposed to plasma and chemicals, such as semiconductor manufacturing equipment. Round bar φ6.3 to φ63.5.

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