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ABS, or acrylonitrile butadiene styrene, is a widely used thermoplastic that has become common due to its relatively low cost and excellent toughness. CNC machining in ABS is a cost-effective way to cut parts into custom shapes without the need for expensive molds, particularly for prototypes, jigs and fixtures, and low-volume production.
ABS (acrylonitrile butadiene styrene) plastic is used in a wide array of industries due to its low cost, manufacturability, and exceptional mechanical properties. It is found in a vast number of consumer products and is also used extensively in the automotive industry. CNC machined ABS exhibits remarkable toughness, rigidity, and shock absorbance characteristics, especially for such an inexpensive material.
CNC PlasticsABS has good dimensional stability, excellent impact strength, and is easily machined. This makes CNC machined ABS ideal for applications that require low-cost and hard-wearing parts such as tool enclosures and casings.
Generic ABS Properties
| Tensile Strength, Yield (MPa) | Elongation at Break (%) | Hardness (Rockwell M) | Heat Deflection Temperature (°C) at 0.46 MPa | Melting Point (°C) |
|---|---|---|---|---|
| 40.8 | 53.6% | 108 | 98.2 | 268 |
| Applications | Advantages | Disadvantages | Lead Time | Tolerances |
|---|---|---|---|---|
| Product housings, fixtures and jigs, vehicle dashboards | High-impact resistance, low cost, chemical resistance | Not viable for high-temperature applications, damaged by solvents, poor UV stability | Starting at 2 days | Standard ±0.010"; ±0.002" are achievable; sub-±0.002" are available after manual review |
Surface finishes are rarely applied to CNC machined ABS because most would impede the material’s inherent optical properties. In cases where a finish is needed, opt for one that enhances these properties.
