Document 6RqnYQ9m5zL6nL5XNZy0do9dR

8/25/23, 12:06 PM Maximum Continuous Service Temperature - Plastic Properties The material selection platform Plastics & Elastomers Max Continuous Service Temperature 1. What is maximum continuous service temperature? 2. What are the units of continuous service temperature? 3. What are the factors on which CST depends? 4. What is relative thermal index (RTI)? 5. What are the types of relative thermal index (RTI)? 6. How to measure the RTI values? 7. What are the maximum CST values of several plastics? 1 What is maximum continuous ser- vice temperature? The maximum continuous use temperature of plastics is the maximum acceptable temperature above which the mechanical properties or electrical properties of a part made from the material are significantly degrading over the reasonable lifetime of the tested product. These properties include tensile strength, impact strength, and di- electric strength linked to insulation. What are the units of continuous service temperature? The maximum continuous temperature is measured in: Degree Celsius (C) Degree Fahrenheit (F) Degree Kelvin (K) What are the factors on which CST depends? In reality, the true maximum continuous use temperature depends on: The time involved in testing. The loading levels can affect the value. Additives and reinforcements used in the formulation. https://omnexus.specialchem.com/polymer-properties/properties/max-continuous-service-temperature Back to Top 1/9 8/25/23, 12:06 PM Maximum Continuous Service Temperature - Plastic Properties What is relative thermal index (RTI)? Relative Thermal Index (RTI) is a parameter to compare the continuous use temperature of materials. The RTI is based on a loss of properties of the plastic versus time. In general, when the plastic is exposed to maximum con- tinuous use temperature - good, long-term performance is observed. On the other hand, it does not consider short-term thermal spikes. RTI gives an indication of the aging temperature that a material can endure for 100,000 hours and still retain at least half of the initial property being measured. However, it does need to be noted that different properties of materials decay at dissimilar rates. This is the primary reason why often RTI values are associated with a particular property and the related continuous use temperatures are given as a range of values rather than as a single value. What are the types of relative thermal index (RTI)? The RTI values depend on the property that is being examined. There are three general classes of properties that are associated with the RTI. 1 1. RTI Electrical for insulating properties. 2. RTI Mechanical Impact for impact resistance, elongation, toughness, and flexibility. 3. RTI Mechanical Strength for mechanical properties or the structural integrity of the plastics. The three values for a particular polymer are often different from each other. What is the test method to measure the RTI values? UL 746 is the test method to determine the RTI values. Place the sets of test specimens in ovens at four different pre-set temperatures. At certain time intervals, remove the specimens from the ovens. Determine the specific mechanical or elec- trical properties of interest. Plot the obtained results on a property versus a time graph. This is done until the property that is being tested declines to 50 percent or less of its initial value. In this analysis, the 50 percent value of the half-life of that particular property. The half-life values are then, plot- ted against the reciprocal of the absolute aging temperature. This plot results in a straight line that can be extrapo- lated, if needed, to indicate the half-life of the property at other temperatures. We can also compare the results obtained in this testing procedure with a material of known aging performance. What are the maximum CST values of several plastics? Click to find polymer you are looking for: A-C | E-M | PA-PC | PE-PL | PM-PP | PS-X https://omnexus.specialchem.com/polymer-properties/properties/max-continuous-service-temperature Back to Top 2/9 8/25/23, 12:06 PM Maximum Continuous Service Temperature - Plastic Properties Polymer Name Min Value (C) ABS - Acrylonitrile Butadiene Styrene 86.0 ABS Flame Retardant 65.0 ABS High Heat 75.0 ABS High Impact 65.0 ABS/PC Blend - Acrylonitrile Butadiene 70.0 Styrene/Polycarbonate Blend ABS/PC Blend 20% Glass Fiber 70.0 ABS/PC Flame Retardant 70.0 ASA - Acrylonitrile Styrene Acrylate 80.0 ASA/PC Blend - Acrylonitrile Styrene 90.0 Acrylate/Polycarbonate Blend 1 ASA/PC Flame Retardant 90.0 ASA/PVC Blend - Acrylonitrile Styrene 80.0 Acrylate/Polyvinyl Chloride Blend CA - Cellulose Acetate 45.0 CAB - Cellulose Acetate Butyrate 60.0 CP - Cellulose Propionate 60.0 CPVC - Chlorinated Polyvinyl Chloride 80.0 ECTFE - Ethylene Chlorotrifluoroethylene 140.0 ETFE - Ethylene Tetrafluoroethylene 140.0 EVA - Ethylene Vinyl Acetate 45.0 EVOH - Ethylene Vinyl Alcohol 80.0 FEP - Fluorinated Ethylene Propylene 205.0 HDPE - High Density Polyethylene 100.0 HIPS - High Impact Polystyrene 60.0 HIPS Flame Retardant V0 60.0 Ionomer (Ethylene-Methyl Acrylate Copolymer) 34.0 LCP - Liquid Crystal Polymer 200.0 LCP Carbon Fiber-reinforced 200.0 LCP Glass Fiber-reinforced 200.0 LCP Mineral-filled 200.0 LDPE - Low Density Polyethylene 80.0 https://omnexus.specialchem.com/polymer-properties/properties/max-continuous-service-temperature Max Value (C) 89.0 95.0 110.0 100.0 110.0 110.0 110.0 90.0 110.0 110.0 90.0 95.0 105.0 105.0 100.0 150.0 155.0 70.0 100.0 205.0 120.0 80.0 80.0 48.0 240.0 240.0 240.0 240.0 100.0 Back to Top 3/9 8/25/23, 12:06 PM Maximum Continuous Service Temperature - Plastic Properties LLDPE - Linear Low Density Polyethylene MABS - Transparent Acrylonitrile Butadiene Styrene PA 46 - Polyamide 46 PA 46, 30% Glass Fiber PA 6 - Polyamide 6 PA 6-10 - Polyamide 6-10 PA 66 - Polyamide 6-6 PA 66, 30% Glass Fiber PA 66, 30% Mineral filled PA 66, Impact Modified, 15-30% Glass Fiber PA 66, Impact Modified Polyamide semi-aromatic 1 PAI - Polyamide-Imide PAI, 30% Glass Fiber PAI, Low Friction PAR - Polyarylate PBT - Polybutylene Terephthalate PBT, 30% Glass Fiber PC (Polycarbonate) 20-40% Glass Fiber PC (Polycarbonate) 20-40% Glass Fiber Flame Retardant PC - Polycarbonate, high heat PC/PBT Blend - Polycarbonate/Polybutylene Terephthalate Blend PC/PBT blend, Glass Filled PCL - Polycaprolactone PCTFE - Polymonochlorotrifluoroethylene PE - Polyethylene 30% Glass Fiber PEEK - Polyetheretherketone PEEK 30% Carbon Fiber-reinforced PEEK 30% Glass Fiber-reinforced PEI - Polyetherimide PEI, 30% Glass Fiber-reinforced 90.0 75.0 110.0 130.0 80.0 80.0 80.0 100.0 120.0 110.0 80.0 88.0 220.0 220.0 220.0 130.0 80.0 80.0 90.0 90.0 100.0 60.0 121.0 45.0 150.0 100.0 154.0 170.0 170.0 110.0 80.0 150.0 160.0 120.0 150.0 140.0 150.0 140.0 140.0 130.0 135.0 280.0 220.0 220.0 130.0 140.0 140.0 125.0 125.0 140.0 121.0 193.0 45.0 175.0 130.0 260.0 240.0 240.0 170.0 170.0 https://omnexus.specialchem.com/polymer-properties/properties/max-continuous-service-temperature Back to Top 4/9 8/25/23, 12:06 PM Maximum Continuous Service Temperature - Plastic Properties PEI, Mineral Filled 170.0 170.0 PESU - Polyethersulfone 175.0 180.0 PESU 10-30% glass fiber 180.0 180.0 PET - Polyethylene Terephthalate 80.0 140.0 PET, 30% Glass Fiber-reinforced PET, 30/35% Glass Fiber-reinforced, Impact Modified PETG - Polyethylene Terephthalate Glycol 100.0 80.0 63.0 140.0 140.0 63.0 PFA - Perfluoroalkoxy 240.0 260.0 PHB - V (5% valerate) 95.0 95.0 PI - Polyimide 260.0 360.0 PMMA - Polymethylmethacrylate/Acrylic 70.0 90.0 PMMA (Acrylic) High Heat 100.0 150.0 1 PMMA (Acrylic) Impact Modified PMP - Polymethylpentene 70.0 90.0 90.0 110.0 PMP 30% Glass Fiber-reinforced 90.0 110.0 PMP Mineral Filled 90.0 110.0 POM - Polyoxymethylene (Acetal) 80.0 105.0 POM (Acetal) Impact Modified 80.0 100.0 POM (Acetal) Low Friction 80.0 105.0 POM (Acetal) Mineral Filled 80.0 105.0 PP - Polypropylene 10-20% Glass Fiber 100.0 130.0 PP, 10-40% Mineral Filled 100.0 130.0 PP, 10-40% Talc Filled 100.0 130.0 PP, 30-40% Glass Fiber-reinforced 100.0 130.0 PP (Polypropylene) Copolymer 100.0 130.0 PP (Polypropylene) Homopolymer 100.0 130.0 PP, Impact Modified 90.0 115.0 PPA - Polyphthalamide 140.0 140.0 PPA, 30% Mineral-filled 154.0 156.0 PPA, 33% Glass Fiber-reinforced 184.0 186.0 PPA, 45% Glass Fiber-reinforced 184.0 186.0 PPE - Polyphenylene Ether 80.0 110.0 https://omnexus.specialchem.com/polymer-properties/properties/max-continuous-service-temperature Back to Top 5/9 8/25/23, 12:06 PM Maximum Continuous Service Temperature - Plastic Properties PPE, 30% Glass Fiber-reinforced 80.0 110.0 PPE, Flame Retardant 80.0 110.0 PPE, Impact Modified 80.0 110.0 PPE, Mineral Filled 80.0 110.0 PPS - Polyphenylene Sulfide 200.0 220.0 PPS, 20-30% Glass Fiber-reinforced 200.0 220.0 PPS, 40% Glass Fiber-reinforced 200.0 220.0 PPS, Conductive 200.0 220.0 PPS, Glass fiber & Mineral-filled 200.0 220.0 PPSU - Polyphenylene Sulfone 149.0 210.0 PS (Polystyrene) 30% glass fiber 75.0 122.0 PS (Polystyrene) Crystal 65.0 80.0 PS, High Heat 1 PSU - Polysulfone 75.0 150.0 90.0 180.0 PSU, 30% Glass finer-reinforced 150.0 180.0 PSU Mineral Filled 150.0 150.0 PTFE - Polytetrafluoroethylene 260.0 290.0 PTFE, 25% Glass Fiber-reinforced PVC (Polyvinyl Chloride), 20% Glass Fiber-rein- forced PVC, Plasticized 260.0 50.0 50.0 260.0 80.0 80.0 PVC, Plasticized Filled 50.0 80.0 PVC Rigid 50.0 80.0 PVDC - Polyvinylidene Chloride 70.0 90.0 PVDF - Polyvinylidene Fluoride 70.0 150.0 SAN - Styrene Acrylonitrile 65.0 95.0 SAN, 20% Glass Fiber-reinforced 65.0 95.0 SMA - Styrene Maleic Anhydride 75.0 100.0 SMA, 20% Glass Fiber-reinforced 75.0 100.0 SMA, Flame Retardant V0 75.0 100.0 SMMA - Styrene Methyl Methacrylate 94.0 UHMWPE - Ultra High Molecular Weight Polyethylene XLPE - Crosslinked Polyethylene 110.0 67.0 https://omnexus.specialchem.com/polymer-properties/properties/max-continuous-service-temperature 100.0 130.0 82.0 Back to Top 6/9 8/25/23, 12:06 PM Maximum Continuous Service Temperature - Plastic Properties Disclaimer: all data and information obtained via the Polymer Selector including but not limited to material suit- ability, material properties, performances, characteristics and cost are given for information purpose only. 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