Copolymer Acetal, 3" Thick X 2.5" Wide X 6" Long

US $28.00

Plover, Wisconsin, United States
Jan 30th

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3" thick x 2.5" wide x 6" long Copolymer Acetal FDA and USDA Approved Material Product Overview Low moisture absorption High strength, stiffness Easy to machine No centerline porosity in Acetron® GP Many formulation options: Copolymer, Homopolymer, PTFE filled, and Internally lubricated/enhanced wear grade Acetal provides high strength and stiffness coupled with enhanced dimensional stability and ease of machining. As a semi-crystalline material, acetal is also characterized by a low coefficient of friction and good wear properties -- especially in wet environments. Because acetal absorbs minimal amounts of moisture, its physical properties remain constant in a variety of environments. Low moisture absorption results in excellent dimensional stability for close-tolerance machined parts. In high moisture or submerged applications, acetal bearings outperform nylon 4 to 1. Acetal is ideally suited for close tolerance mechanical parts and electrical insulators which require strength and stiffness. It also offers resistance to a wide range of chemicals including many solvents. Physical Properties Metric English Comments Specific Gravity 1.41 g/cc 1.41 g/cc ASTM D792 Water Absorption 0.20 % 0.20 % Immersion, 24hr; ASTM D570(2) Water Absorption at Saturation 0.90 % 0.90 % Immersion; ASTM D570(2) Mechanical Properties Metric English Comments Hardness, Rockwell M 88 88 ASTM D785 Hardness, Rockwell R 120 120 ASTM D785 Hardness, Shore D 85 85 ASTM D2240 Tensile Strength 65.5 MPa 9500 psi ASTM D638 Tensile Strength at 65°C (150°F) 49.6 MPa 7200 psi ASTM D638 Elongation at Break 30 % 30 % ASTM D638 Tensile Modulus 2.76 GPa 400 ksi ASTM D638 Flexural Strength 82.7 MPa 12000 psi ASTM D790 Flexural Modulus 2.76 GPa 400 ksi ASTM D790 Compressive Strength 103 MPa 15000 psi 10% Def.; ASTM D695 Compressive Modulus 2.76 GPa 400 ksi ASTM D695 Shear Strength 55.2 MPa 8000 psi ASTM D732 Izod Impact, Notched 0.534 J/cm 1.00 ft-lb/in ASTM D256 Type A Coefficient of Friction, Dynamic 0.25 0.25 Dry vs. Steel; QTM55007 K (wear) Factor 403 x 10-8 mm?/N-M 200 x 10-10 in?-min/ft-lb-hr QTM 55010 Limiting Pressure Velocity 0.0946 MPa-m/sec 2700 psi-ft/min 4:1 safety factor; QTM 55007 Electrical Properties Metric English Comments Surface Resistivity per Square >= 1.00e+13 ohm >= 1.00e+13 ohm EOS/ESD S11.11 Dielectric Constant 3.8 @Frequency 1e+6 Hz 3.8 @Frequency 1e+6 Hz ASTM D150 Dielectric Strength 16.5 kV/mm 420 kV/in Short Term; ASTM D149 Dissipation Factor 0.0050 @Frequency 1e+6 Hz 0.0050 @Frequency 1e+6 Hz ASTM D150 Thermal Properties Metric English Comments CTE, linear 97.2 µm/m-°C @Temperature -40.0 - 149 °C 54.0 µin/in-°F @Temperature -40.0 - 300 °F ASTM E831 Thermal Conductivity 0.231 W/m-K 1.60 BTU-in/hr-ft?-°F ASTM F433 Melting Point 168 °C 335 °F Crystalline, Peak; ASTM D3418 Maximum Service Temperature, Air 82.2 °C 180 °F Long Term Deflection Temperature at 1.8 MPa (264 psi) 104 °C 220 °F ASTM D648 Flammability, UL94 HB HB 1/8 inch (Estimated Rating) Compliance Properties Metric English Comments 3A-Dairy Yes Yes Canada AG Yes Yes FDA Yes Yes NSF Yes Yes STD 51 & 61 Natural Only USDA Yes Yes USP Class VI No No Chemical Resistance Properties Metric English Comments Acids, Strong (pH 1-3) Unacceptable Unacceptable Acids, Weak Limited Limited Alcohols Acceptable Acceptable Alkalies, Strong (pH 11-14) Unacceptable Unacceptable Alkalies, Weak Acceptable Acceptable Chlorinated Solvents Limited Limited Conductive / Static Dissipative No No Continuous Sunlight Limited Limited Hot Water / Steam Limited Limited Hydrocarbons - Aliphatic Acceptable Acceptable Hydrocarbons - Aromatic Acceptable Acceptable Inorganic Salt Solutions Acceptable Acceptable Ketones, Esters Acceptable Acceptable Miscellaneous Properties Metric English Comments Data Sheet Region Americas Americas Targeted Usage Load + Bearing Load + Bearing Descriptive Properties Color Natural / Black Machinability 1 1-10, 1=Easier to Machine In business since 1984 FREE! Sellers: Add a FREE map to your listings. FREE!