ASA retains the practical toughness and processability associated with ABS while replacing the weather-sensitive butadiene phase with an acrylic elastomer. The result is a strong candidate for outdoor housings, automotive trim, fixtures and equipment exposed to sunlight.
Material family names are not specifications. This page anchors the discussion to a named commercial grade and published printed-specimen data, then translates that data into practical selection and design guidance.
ASA retains the practical toughness and processability associated with ABS while replacing the weather-sensitive butadiene phase with an acrylic elastomer. The result is a strong candidate for outdoor housings, automotive trim, fixtures and equipment exposed to sunlight.
Choose ASA for durable outdoor parts where colour stability, weathering and useful heat resistance matter.
Orientation, conditioning and geometry can move finished-part performance materially. Use these figures to compare candidate materials—not as guaranteed minimums.
| Property | Representative value | Test / context |
|---|---|---|
| Density | 1.13 g/cm³ | Manufacturer TDS |
| Tensile strength | 37 ± 3 MPa | Manufacturer TDS |
| Elongation at break | 9.2 ± 1.4% | Manufacturer TDS |
| Flexural modulus · XY | 1.92 ± 0.13 GPa | Manufacturer TDS |
| Flexural strength · XY | 65 ± 5 MPa | Manufacturer TDS |
| Impact strength · XY | 41.0 ± 2.3 kJ/m² | Manufacturer TDS |
| HDT · 0.45 MPa | 100°C | ISO 75 |
| Saturated moisture uptake | 0.45% · 25°C / 55% RH | Manufacturer method |
XY values normally represent flat-printed specimens. Z-direction strength can be substantially lower. Final production settings should be qualified on representative geometry.
A useful material choice starts with load case, temperature, environment, duty cycle and failure consequence—not the strongest number on a datasheet.