Medical304, 304V, 302 and 316 Ss PTFE/Parylene Coating Mandrel¹

Product Description We offer PTFE coated mandrels and mandrels coated with parylene. Both coatings are used to increase the lubricity, i.e. reduce the friction between the supported catheter delivery system and the mandrel. Whilst PTFE has a lower coefficient of friction than parylene, and is a harder coating, parylene is preferred for specific applications. In high friction applications, parylene will wear faster than PTFE. However in low friction applications, Parylene has better wear characteristics. Mandrels-forms and shapes - wire and rodThe standard requirement is for straight mandrels, between 100mm and 3000mm (between 4" and 10ft) long, with diameter ranging from 0.3mm (0.012" diameter) to 10mm (0.4" diameter). Mandrels will, as a standard, have deburred, chamfered or rounded ends depending on customer preference.We centreless grind straight mandrels to a tolerance of +/- 0.002mm (+/-2/10000" tolerance).On request, we can supply mandrels centreless ground to more than one diameter along the length i.e. tapered mandrel, stepped mandrel, D-shape mandrel. Machined end-forms to each mandrel are possible, as are grooved mandrels. Crescent shaped mandrels, half-moon shaped mandrels and star-shape or profiled mandrels are drawn incorporating channels or "grooves" along their length. Some examples of these different shapes and forms are shown below.Finally, we manufacture mandrels which are wire-formed. Starting with straight, centreless ground bar or wire, we wire-form each individual mandrel to customer specification. Shipping mandrels, for their easy removal, have a small loop at one end as shown. Bent, or wire formed mandrels might be specified in order for our customer to manufacture a similarly shaped delivery system by cladding the mandrel then setting the final polymer shape. Our laser welding capability enables burr removal and joining mandrel "legs" together in order to consolidate the precise mandrel shape.  ParameterSpecificationAvailable MaterialsAISI 304, AISI 304V (vacuum melt), AISI 302, AISI 316 (medical grade stainless steel)Mandrel TypeStraight mandrel / Wire core / Forming mandrel / Release coreCoating OptionsPTFE (polytetrafluoroethylene), Parylene-C / Parylene-N / Dual coating optionalCoating ThicknessPTFE: 2-15 μm ;Parylene: 0.5-5 μm (customizable)Outer Diameter (OD)0.10 mm - 2.50 mm (customizable)Length50 mm - 2000 mm (customizable)OD Tolerance±0.005 mmSurface RoughnessRa ≤ 0.1 μm (before coating)Straightness≤ 0.1 mm per 1000 mmEnd ConditionFlat cut / Deburred / Chamfered / RoundedColor Options (PTFE)Natural / Blue / Green / Black / Custom color codingAdhesion Quality100% pinhole-free, uniform, cleanroom-compatibleThermal ResistancePTFE: up to 260°C / Parylene-C: up to 150°CBiocompatibilityISO 10993 / USP Class VI / FDA compliant materials usedCleanlinessUltrasonic cleaned, class 10000 cleanroom packagedCertificationsISO 13485 

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