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ABS is a copolymer of Acrylonitrile, Butadiene, and Styrene. ABS plastics generally possess medium strength and performance and medium cost; ABS is often used as the cost and performance dividing line between standard plastics (PVC, polyethylene, polystyrene, etc.) and engineering plastics (acrylic, nylon, acetal, etc.). ABS polymers can be given a range of properties, depending on the ratio of the monomeric constituents and the molecular level connectivity. It is tough, hard and rigid and has good chemical resistance and dimensional stability. It also is creep resistant, inexpensive, electroplatable, has moderate strength, and has a tendency to stress crack.
| ABS Properties | ||||||||
|---|---|---|---|---|---|---|---|---|
| Property | ASTM or UL Test | ABS | ||||||
| Water Absorption (24hrs) | (%) | D-570 | - | |||||
| Density | (lb/in³) | D-792 | 0.038 | |||||
| (g/cm³) | 1.04 | |||||||
| IZOD Notched Impact | (ft-lb/in) | D-256 | 7.0 | |||||
| Tensile Strength | (psi) | D-638 | 6,000 | |||||
| Tensile Modulus | (psi) | D-638 | 340,000 | |||||
| Tensile Elongation at Break | (%) | D-638 | 25 | |||||
| Hardness | (Rockwell R) | D-785 | R105 | |||||
| Compressive Strength | (psi) | D-695 | - | |||||
| Compressive Modulus | (psi) | D-695 | - | |||||
| Flexural Strength | (psi) | D-790 | 11,000 | |||||
| Flexural Modulus | (psi) | D-790 | 320,000 | |||||
| Thermal Conductivity | (BTU-in/ft²-hr-°F) | C-177 | - | |||||
| (x 104 cal/cm-sec-°C) | - | |||||||
| Heat Deflection Temp at 264 psi | (°F / °C) | D-648 | 215 / 102 | |||||
| Coefficient of Linear Thermal Expansion | (x 10-5 in./in./°F) | D-696 | 5.3 | |||||
| Flammability Rating | UL-94 | H-B | ||||||
| Melting Temperature | (°F / °C) | D-3418 | - / - | |||||
| Max Operating Temp | (°F / °C) | - | 140 / 60 | |||||
| Dialectric Strength, 1/8" thick | (V/mil) | D-149 | - | |||||
| Dialectric Constant at 60 Hz | D-150 | - | ||||||
| Dissipation Factor at 60 Hz | D-150 | - | ||||||
| Volume Resistivity at 50% RH | (ohm-cm) | D-257 | 1015 | |||||
| Physical | Mechanical | Thermal | Electrical | |||||