Materials Fluoropolymers As your fluoropolymer experts Savillex has experience in processing all of the materials listed below PFA (perfluoroalkoxy) PFA is the material of choice for the majority of Savillexs products due to its superior properties Of key importance is the purity of the material and its excellent chemical resistance making it ideally suited for products serving the analytical semiconductor medical pharmaceutical and chemical processing industries PFA is translucent in color so you can see what is inside the product It has the widest service temperature range of the fluorocarbons ranging from 454ºF/270º C to 500ºF/260º C In comparison to PTFE PFA demonstrates greater strength stiffness and creep resistance In addition it has a low coefficient of friction and beneficial antistick properties PFA is considered by some to be the best meltprocessable fluoropolymer PTFE (polytetrafluoroethylene) An extremely low coefficient of friction makes PTFE an excellent material where surface wear might be a problem PTFE exhibits a useful service range from below 100ºF/73ºC to temperature of over 500ºF/260ºC Its resistance to solvents is excellent throughout a wide range of temperature Its low dielectric constant and electric resistance also remain constant throughout this range The major disadvantage with PTFE is the very high melt viscosity that makes processing difficult by normal extrusion and injection molding methods and its propensity to creep and cold flow For use in the fabrication of labware products PTFE is not ideal because the material is opaque which does not allow the user to see inside the product Parts are typically machined into final use products FEP (fluorinated ethylene propylene) FEP has similar mechanical and chemical properties to PTFE but better impact strength and is meltprocessable The material tends to be translucent in color and fairly rigid It offers excellent chemical resistance FEP can withstand temperatures ranging from 454ºF/270ºC to 392ºF/200ºC and may be sterilized repeatedly ECTFE (ethylenechlorotrifluoroethylene) ECTFE is translucent white and is a meltprocessable alternating copolymer of ethylene and chlorotrifluoroethylene It has excellent electrical properties and chemical resistance ECTFE can withstand continuous exposure to extreme temperatures while maintaining its excellent mechanical properties In addition it is nonburning and resistant to radiation ETFE (ethylenetetrafluoroethylene) ETFE is a partially fluorinated copolymer that is translucent white in color and has good chemical resistance Its mechanical properties approach that of fully fluorinated polymers but has a lower maximum service temperature ETFE is another meltprocessable fluoropolymer with greater abrasion resistance and impact strength than FEP and PTFE PVDF (polyvinylidene fluoride) PVDF is a partially fluorinated homopolymer and is made by polymerizing vinylidene monomer It is opaque in color resists UV radiation and offers high mechanical strength and abrasion resistance These properties along with its chemical resistance make PVDF a popular choice for molded automotive electrical and chemical piping products 77 Phone 9529354100 PFA PTFE FEP ECTFE ETFE PVDF

Fluoropolymers continued PEEK (polyetheretherketone) PEEK is a high temperature thermoplastic with excellent strength creep and wear resistance properties even at high temperatures Though it is resistant to a wide range of organic and inorganic liquids its chemical compatibility is not that of PFA and other fully fluorinated polymers Polyolefins PP (polypropylene) PP is translucent in color autoclavable and is unaffected by solvents at room temperature PP products tend to be brittle at 32ºF/0ºC and may crack or break if dropped PP does offer the best stresscrack resistance of the polyolefins HDPE (highdensity polyethylene) HDPE is opaque in color lightweight and provides very low moisture absorption It has little branching giving it stronger intermolecular forces and tensile strength than lower density polyethylene It can withstand temperatures ranging from 148ºF/100ºC to 248ºF/120ºC HDPE Application Properties Fluoropolymers Polyolefins PFA PTFE FEP ECTFE ETFE PVDF PEEK PP HDPE Continuous 260ºC 260ºC 200ºC 150ºC 150ºC 150ºC 250ºC 135ºC 120ºC Service Temp 500ºF 500ºF 392ºF 302ºF 302ºF 302ºF 482ºF 275ºF 248ºF Brittleness Temp 270ºC 100ºC 270ºC 100ºC 105ºC 62ºC n/a 0ºC 100ºC Transparency translucent opaque translucent translucent translucent opaque opaque translucent opaque white white Microwavability Yes Yes Marginal Yes Yes Marginal Yes Yes No Autoclaving Yes Yes Yes Yes Yes Yes Yes Yes No Sterilization Gas Yes Yes Yes Yes Yes Yes Yes Yes Yes Dry Heat Yes Yes Yes Yes Yes No Yes No No Radiation No No No Yes Yes No Yes No No Disinfectants Yes Yes Yes Yes Yes Yes Yes Yes Yes Flexibility Excellent Excellent Excellent Rigid Rigid Rigid Rigid Rigid Rigid Chemical Solvent Resistance Excellent Excellent Excellent Very Good Very Good Very Good Very Good Good Good Melting Point 302º310ºC 320º330ºC 275ºC 242ºC 265ºC 141º178ºC 343ºC 160º176ºC 125º138ºC 576º590ºF 608º626ºF 527ºF 467ºF 509ºF 285º352ºF 649ºF 320º348ºF 257º280ºF Mechanical Properties Materials Fluoropolymers Polyolefins PFA PTFE FEP ECTFE ETFE PVDF PEEK PP HDPE Specific Gravity 215 215 215 170 176 178 130 90 95 Tensile Strength psi 4000 3500 3500 7000 6500 5000 14500 4800 4900 Coefficient of Friction 02 005 010 008 03 065 03 04 02 04 025 03 05 029 Flame Rating VO VO VO VO VO VO VO HB HB Water Absorption 24h <003 % <001 % <001 % <001 % <003 % <004 % <050 % <002 % <001 % Dielectric constant D 150 at 10 3 Hz 21 21 21 25 26 72 40 23 23 The tables listed are a generally accepted summary of properties that we believe to be reliable Please note that many of these resins are produced in several varieties and property characteristics may vary Therefore determination of resin is dependent on the application and this table is only meant to serve as a general guideline PEEK PP wwwsavillexcom 78