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Acrylonitrile-Butadiene-Styrene (ABS) Typical Properties of Acrylonitrile-Butadiene-Styrene (ABS) American Engineering SI Processing Temperature 400°F to 525°F 204°C to 274°C Linear Mold Shrinkage 0.002 to 0.007 in./in. 0.002 to 0.007 cm/cm Melting Point – – Density 63.7 to 79.9 lb./ft.3 1.02 to 1.28 g/cm3 Tensile Strength, Yield 4.6 to 7.9 lb./in.2 x 103 3.2 to 5.6 kg/cm2 x 102 Tensile Strength, Break 4.0 to 12.0 lb./in.2 x 103 2.8 to 8.4 kg/cm2 x 102 Elongation, Break 1.0 to 50.0% 1.0 to 50.0% Tensile Modulus 2.0 to 12.0 lb./in.2 x 105 1.4 to 8.4 kg/cm2 x 104 Flexural Strength, Yield 6.2 to 20.0 lb./in.2 x 103 4.4 to 14.1 kg/cm2 x 102 Flexural Modulus 2.5 to 4.4 lb./in.2 x 105 1.8 to 3.1 kg/cm2 x 104 Compressive Strength 6.0 to 17.0 lb./in.2 x 103 4.2 to 12.0 kg/cm2 x 102 Izod Notched, R.T. 0.5 to 12.0 ft-lb./in. 2.7 to 64.8 kg cm/cm Hardness R95 - R125 Rockwell R96 - R125 Rockwell Thermal Conductivity 1.2 to 1.6 BTU-in./hr.-ft.2-°F 0.17 to 0.23 W/m-°K Linear Thermal Expansion 1.1 to 5.7 in./in.-°F x 10-5 2.0 to 10.3 cm/cm-°C x10-5 Deflection Temperature @ 264 psi 170°F to 240°F 77°C to 116°C Deflection Temperature @ 66 psi 190°F to 245°F 88°C to 118°C Continuous Service Temperature 130°F to 180°F 54°C to 82°C Dielectric Strength 350 to 500 V/10-3 in. 1.4 to 2.0 V/mm x 104 Dielectric Constant @ 1 MHz 3.1 to 3.4 3.1 to 3.4 Dissipation Factor @ 1 MHz 0.008 to 0.009 0.008 to 0.009 Water Absorption, 24 hr. 0.1 to 0.5% 0.1 to 0.5% Thermoplastic Trade Names • Cevian • Cycolac • Lustran • Magnum • Shinko-Lac • Taitalac • Toyolac General Description Manufacturer Hoescht Celanese General Electric Monsanto Chemical Dow Chemical Mitsubishi Rayon Taita Chemical Co. Toray Industries ABS is a generic name for a versatile family of amorphous thermoplastics produced by combining three monomers, acrylonitrile, butadiene, and styrene. The ratio of these monomers, as well as the molecular structure, can be manipulated to optimize the characteristics of the resulting polymer. Acrylonitrile contributes chemical resistance and thermal stability. Butadiene contributes product toughness, impact resistance, and property retention at low temperatures. Styrene contributes rigidity, surface appearance, and processability. The resultant polymer’s properties can vary over a large range to suit the manufacturer’s needs. For this reason, ABS is widely used in countless applications throughout industry. Specialty grades available include general purpose, glass filled, electroplateable, heat resistant, clear, high and low gloss, structural foam, and flame retardant grades. In 2004, the price of ABS ranged from $1.25 to $3.00 per pound at truckload quantities. General Properties ABS offers an excellent combination of toughness and rigidity at a low cost. Typical notched impact strength ranges from 0.5 to 12 ft.-lb./ in. (2.7 to 64.8 kg cm/cm), while typical tensile modulii range from 200,000 to 1,200,000 psi (14,000 to 84,000 kg/cm2). In addition to its toughness, ABS has a high dimensional stability (which permits tight mold tolerances), a pleasing surface appearance, and is very easy to process. ABS is a relatively good electrical insulator and is suitable for secondary insulating applications. ABS is chemically resistant to acids and bases, but is not recommended for use with esters, ketones, or aldehydes. ABS has poor resistance to UV exposure, resulting in significant changes in its appearance and mechanical properties. To address this limitation, there are protective coatings available which enhance ABS’s resistance to UV degradation. Some grades of ABS are created by adding a fourth monomer, such as the addition of alpha methyl styrene to create a heat resistant grade. Clear grades are created by adding methyl methacrylate, giving ABS the ability to transmit 75 to 80% of light. Typical Applications • Medical – Piercing pins, clamps, filter casings, stopcocks, check valves, blood dialyzers • Miscellaneous – Appliances, business machines, telephones, luggage, power tools, bathtubs, pipe fittings, toys, faucets, shower heads, sporting goods, automotive applications 20 The Loctite® Design Guide for Bonding Plastics, Volume 6PDF Image | Design Guide for Bonding Plastics Volume 6 LT-2197
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