ASA (Acrylonitrile Styrene Acrylate) is a thermoplastic material known for its excellent weather resistance and UV stability. It is a modified version of ABS, incorporating acrylic ester elastomer to enhance its outdoor performance. ASA is commonly used in applications that require long-term exposure to sunlight and harsh weather conditions, such as outdoor signage, automotive exterior parts, and architectural components.
Material details
ASA is a copolymer composed of acrylonitrile, styrene, and acrylic ester elastomer. The addition of the acrylic ester elastomer improves the material's resistance to UV degradation, discoloration, and impact at low temperatures. ASA retains many of the desirable properties of ABS, including good strength, toughness, and chemical resistance. It is available in filament form for 3D printing and can also be processed through injection molding and extrusion methods.
Technical properties
| Property | Value |
|---|---|
| Tensile strength | 45-60 MPa |
| Tensile modulus | 1,600-2,000 MPa |
| Tensile elongation | 20-30% |
| Flexural strength | 60-80 MPa |
| Flexural modulus | 1,500-2,000 MPa |
| HDT | 85-95°C |
These technical properties represent general ranges for ASA. The specific values can vary depending on the manufacturer and grade of ASA used. ASA is known for its excellent resistance to weathering, UV radiation, and chemicals, making it suitable for outdoor applications. It can be post-processed, including sanding, painting, and adhesive bonding, to achieve desired aesthetics and finishes.