Peek plastic parts skin#

Platin Electrode 23☌ 50% R.H., solvent Aįrequently Asked Questions About PEEK What kind of plastic is PEEK? Individual testing regarding application conditions is mandatory Notched impact strength (Charpy) (KJ/m^2)įound in public sources.

Specimen 10x10x50mm, modulus range between 0.5 and 1% compressionįor charpy test: support span 64mm, norm specimen. Modulus of Elasticity (Tensile strength) (MPa)įor flexural test: support span 64mm, norm specimen.

Please note: some sizes may be non-stocked items and subject to minimum order quantities. Plate stock lengths may vary between 2,000mm and 3,000mm Round bar stock lengths may vary between 2,000m and 3,000 mm PEEK Plate Please get in contact to discuss further. Stock sizes will vary depending on supplier. Stock finishes are often scratched and dented. Some sheet plastics come with a protective coating however because of long supply chains these can still be scratched underneath. Stock sizes have a +/+ tolerance as the extrusion process is not as accurate as precision machining. Please note we do not supply stock material, the information provided is purely for design and research purposes. Here are the standard stock sizes/colours for PEEK Tube, Round Bar and Plate in the UK. PEEK Bearing grade - Carbon fiber reinforced with graphite and PTFE lubricants, bearing grade PEEK offers the lowest coefficient of friction and the best machinability of all PEEK grades. The result is improved bearing life and capability. This grade provides greater thermal conductivity than unreinforced PEEK, allowing for increased heat dissipation from bearing surfaces. It offers optimum wear-resistance and load-carrying capability in a PEEK-based product. PEEK 30% Carbon-Fiber Reinforced - The addition of carbon fibre enhances the compressive strength and stiffness of PEEK, while dramatically lowering its expansion rate. This grade is especially good for structural applications that require greater strength, stiffness, or stability PEEK 30% Glass-Fiber Reinforced - The addition of glass fiber greatly reduces the expansion rate and increases the flexural modulus of PEEK. It provides the greatest elongation and toughness of all PEEK grades. PEEK unfilled - Unfilled PEEK is an unreinforced general-purpose grade that offers steam and wear resistance. PEEK is available in several different grades the choice of grade will depend on the application as seen below. With low moisture absorption and being one of the most stable of plastics Penta can hold closer tolerances in PEEK than most other engineering plastics.

Peek plastic parts skin#

When quoting for a part of this nature, we would allow for the machinists to skim both layers of skin off, without taking the part to finish size, allowing it to warp and then re-machining both faces, thus heavily reducing the warping. When received as raw material, PEEK, similar to other engineering plastics will have a skin on both sides. When this skin is removed it is very common, especially on large billets with a lot of material being removed, for warping or distortion to occur, usually in the form of the material bowing inwards. We use our PEEK machining experience to deliver the most cost effective method of manufacture. Here at Penta Precision, we are able to source PEEK competitively due to the high volume of PEEK components we manufacture offering you the very best value for money. However, it is 10-20 times the price of other common engineering plastics. PEEK is 53% harder than Acetal, has 63% greater tensile strength and is nearly 60% stiffer than Nylon 6. Industry Examples: Aerospace | Electronics | Military & defence | Medical | Chemical | Oil & gas | Food & packaging | Automotive Typical Components & Applications: Valves | Seals | Connectors | Surgical instruments | Medical implants | Bearings | Bushings | Washers | Blocks | Insulation | Scraper blades See the 'Finishing & Treatments' section for specific treatments to reduce the chances of stress affecting machining.

This can be combatted by machining practices such as using very sharp tools, making sure we are using the right speeds and feeds, and being aware of how clamping/fixturing can affect the part. PEEK (Polyaryletheretherketone) is a rigid opaque (beige) engineering plastic known for its ability to operate at high temperatures, together with its exceptional chemical and wear resistance and dimensional stability.Ī high purity polymer, PEEK is a plastic composed of repeating monomers of two ether groups and a ketone group.Īlthough PEEK is very stable compared to most engineering plastics, stress in the material can have a major impact on machining causing such problems as: PEEK Guide: Properties, Applications and Design Considerations