PLASTIC PROPERTY COMPARISON GRAPH Operating Temperature Operating Temperature Tensile Strength Short Term Long Term (Constant) 700700 2500025,000 600 600600 2000020,000 500 500500
400400 400 1500015,000
PSI 300300 300 1000010,000 200200 200
Degrees Fahrenheit
Degrees Fahrenheit 50005,000 100100 100
00 0 00
Coefficient of Friction Impact Strength Compressive Strength (Lower(Lower has is less better friction)) (The higherhigher thethe impactimpact thethe better)better)
16 45,00045000 0.450.45 1614 40,00040000 0.40.4 14 35,00035000 0.350.35 12 12 30,00030000 0.30.3 10 PSI 25,000 0.25 10 25000 0.25 8 20,00020000 0.20.2 8 6 15,00015000 0.150.15 Ft.-lb/in of notch 6 4 10,00010000 0.10.1 4 5,0005000 0.050.05 2 00 00 0
Nylon 6/6 For more educational products, or to Cast Nylon Moisture Absorption Cost Comparison POM order additional or customized POM Copolymer Thermoplastics Rectangles, contact 9 35 9 Polyester PET-P 35 8 Polyester PBT 8 30 UHMW-PEUHMW 77 30 25 PTFE 66 25 ABS PC 55 20 20 PPO
44 Dollars
1515 PSU Phone: + 913.345.1005 % at Saturation at % 33 PEI Fax: + 913.345.1006 1010 PEEK 2 2 PPS [email protected] 5 11 5 PAI www.iapd.org PI 00 00 IAPD THERMOPLASTICS RECTANGLE
IMIDIZED
Key Characteristics Materials Very high cost per pound Polyimide (PI) Excellent physical properties above 400 degrees F Polyamide Imide (PAI) High Cost
High Strength Excellent electrical properties Polybenzimidazole (PBI)
High Temperature Excellent dimensional stability Low coefficient of friction (COF)
AMORPHOUS HIGH PERFORMANCE THERMOPLASTICS SEMI-CRYSTALLINE HIGH PERFORMANCE THERMOPLASTICS
Key Characteristics Materials Key Characteristics Materials High cost Polysulfone (PSU) High cost Polyvinylidene Fluoride (PVDF) High temperature Polyetherimide (PEI) High temperature Polytetrafluoroethylene (PTFE) High strength and good stiffness Polyethersulfone (PES) High strength Ethylene-Chlorotrifluoroethylene (ECTFE) Good chemical resistance Polyarylsulfone (PAS) Good chemical resistance Fluorinated Ethylene Propylene (FEP) Transparent Polyarylethersulfone (PAES) Good electrical properties Polychlorotrifluoroethylene (PCTFE) Hot water and steam resistance Low COF Perfluoroalkoxy (PFA) Good toughness Polyphenylene Sulfide (PPS) Polyetheretherketone (PEEK)
AMORPHOUS ENGINEERING THERMOPLASTICS SEMI-CRYSTALLINE ENGINEERING THERMOPLASTICS
Key Characteristics Materials Key Characteristics Materials Moderate cost Polycarbonate (PC) Moderate cost Nylon (PA) Moderate temperature resistance Polyphenylene Oxide (Mod PPO) Moderate temperature resistance Acetal (POM) Moderate strength Polyphenylene Ether (Mod PPE) Moderate strength Polyethylene Terephthalate (PET) Good to excellent impact resistance Thermoplastic Polyurethane (TPU) Good chemical resistance Polybutylene Terephthalate (PBT) Good dimensional stability Good bearing and wear properties Ultra High Molecular Weight Good optical qualities Low COF Polyethylene (UHMW-PE) Translucency Difficult to bond
AMORPHOUS COMMODITY THERMOPLASTICS SEMI-CRYSTALLINE COMMODITY THERMOPLASTICS
Key Characteristics Materials Key Characteristics Materials Low cost Acrylic (PMMA) Low cost High Density Polyethylene (HDPE) Low temperature resistance Polystyrene (PS) Low temperature resistance, strength Low Density Polyethylene (LDPE) Low strength Acrylonitrile Butadiene Styrene (ABS) Low COF Polypropylene (PP) Good dimensional stability Polyvinyl Chloride (PVC) Near zero moisture absorption Polymethylpentene (PMP) Transparent (typically, but not always) Polyethylene Terepthalate Glycol (PETG) Good electrical properties, toughness Cellulose Acetate Butyrate (CAB) Difficult to bond
AMORPHOUS KEY CHARACTERISTICS SEMI-CRYSTALLINE KEY CHARACTERISTICS
Soften over a broad range of temperatures Sharp melting point Easy to thermoform Difficult to thermoform Tend to be translucent Tend to be opaque Bond well using adhesives and solvents Difficult to bond using adhesives and solvents Prone to stress cracking Good resistance to stress cracking Poor fatigue resistance Good fatigue resistance Structural applications only (not bearing and wear) Good for bearing and wear and structural applications